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CHEMICAL SAFETY COURSE
2014
INTRODUCTION TO
TREATMENT OF CHEMICALS IN THE
CLEAN ROOM
RULES AND PROCEDURES
1
CHEMICAL SAFETY COURSE
2013
INTRODUCTION TO
TREATMENT OF CHEMICALS IN THE
CLEAN ROOM
RULES AND PROCEDURES
THE COURSE HANDOUTS
http://lims.msl.angstrom.uu.se
>>> Info
>>>> General documents
2
>>>> Chemistry Course
CHEMICAL SAFETY COURSE
CHEMISTRY COURSE
1.
2.
3.
4.
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TREATMENT OF CHEMICALS
DECONTAMINATION
DESTRUCTION OF CHEMICAL WASTE
NITROGEN
CHEMICAL SAFETY COURSE
CHEMISTRY COURSE
1.
2.
3.
4.
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TREATMENT OF CHEMICALS
DECONTAMINATION
DESTRUCTION OF CHEMICAL WASTE
NITROGEN
CHEMICAL SAFETY COURSE
CHEMICAL HAZARDS
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
fires

explosions

poisoning

Burns (i.e.. hazards due to skin exposure to
corrosive chemicals)
CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
6

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
fume Hoods

Glass ware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
7

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
fume Hoods

Glass ware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
 Assignment of responsibilities
Supervisors/instructors/head of Departments
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CHEMICAL SAFETY COURSE
 Assignment of responsibilities
Supervisors/instructors/head of Department
Clean Room chemists
• Farhad Zamany
☎ 018-471 30 87
Cell phone: 070-425 08 44
• Rimantas Brucas
Cell phone: 070-4250879
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CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
10

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
fume Hoods

Glassware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
 General procedures
1. Before running the processes in the Clean Room
2. After any chemical process
3. After completion of studies in the Clean Room
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Wet bench license
• References
• Chemicals in need
> Quality
> MSDS
> Incompatible chemicals
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Wet bench license
• References
• Chemicals in need
> Quality
> MSDS
> Incompatible chemicals
Standard chemicals
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non- standard chemicals
CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
non- standard chemicals
Full name of chemical
Users name
Use blank label
Tel No
Department
Date
Color coding dot
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Wet bench license
• References
• Chemicals in need
> Quality
> MSDS
> Incompatible chemicals
Contact Clean Room chemists
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Wet bench license
• References
• Chemicals in need
> Quality
> MSDS
> Incompatible chemicals
Contact Clean Room chemists
Check if the chemicals that your are in need are
available in MSL or faculty laboratories/storage
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Wet bench license
• References
• Chemicals in need
> Quality
> MSDS
> Incompatible chemicals
Contact Clean Room chemists
Check if the chemicals that your are in need are
available in MSL or faculty laboratories/storage
Search in KLARA Data Base
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https://secure.port.se/Alphaquest/app_Uu
CHEMICAL SAFETY COURSE
Search in KLARA Data Base
https://secure.port.se/Alphaquest/app_Uu
MSL123
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CHEMICAL SAFETY COURSE
Search in KLARA Data Base
https://secure.port.se/Alphaquest/app_Uu
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CHEMICAL SAFETY COURSE
Search in KLARA Data Base
https://secure.port.se/Alphaquest/app_Uu
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CHEMICAL SAFETY COURSE
Search in KLARA Data Base
https://secure.port.se/Alphaquest/app_Uu
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CHEMICAL SAFETY COURSE
Search in KLARA Data Base
https://secure.port.se/Alphaquest/app_Uu
1
2
3
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CHEMICAL SAFETY COURSE
Search in KLARA Data Base
https://secure.port.se/Alphaquest/app_Uu
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CHEMICAL SAFETY COURSE
Search in KLARA Data Base
https://secure.port.se/Alphaquest/app_Uu
1
2
3
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CHEMICAL SAFETY COURSE
Search in KLARA Data Base
https://secure.port.se/Alphaquest/app_Uu
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Treatment of HF and/or Cyanide
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Treatment of HF and/or Cyanide
WARNING
28
HF and CYANIDE
CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Treatment of HF and/or Cyanide
> HF-tester
> HF-antidote-gel (The gel should not be more than two
years old and should not be used one. )
> Instructions (first aid measures)
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Extra warning notices
• Equipment and ventilation system
• Exposure controls/personal protection
• Handling and/or treatment of the chemical
waste after processing
> drain
> destruction
• Weighing and measurements
• Nearest proper fume hood
• Extra decontamination equipment
• Storage box (blue box) för process lab users
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CHEMICAL SAFETY COURSE
1. Before running the processes in the Clean Room
• Nearest
> Equipments emergency shut down
button.
> Emergency alarm button.
> Emergency telephones and Emergency
telephone numbers
> Fire extinguisher
> Emergency doors
> Eye Washers
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CHEMICAL SAFETY COURSE
2. After any chemical process
• Decontaminate and clean
> Wet benches and fume hoods
> Glassware
Move all the things to their proper place
• Chemical waste
> chemical waste label
> Chemical waste shelves
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CHEMICAL SAFETY COURSE
2. After any chemical process
• HF Contaminated wipers
> Plastic bag
> write down ” HF” on the bag
> Acid Fume Hood (not Toxin Hood) or 3R85
> Contact Chemists
• Storage of chemicals
> Ventilated cabinets in the Clean Room
> Ventilated storage room in the
basement
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CHEMICAL SAFETY COURSE
2. After any chemical process
• Report the technical Failure
• Newly mixed chemical in the baths
> Name, concentration, and date
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CHEMICAL SAFETY COURSE
3. After completion of studies in the Clean Room
• Empty your blue box and remove your belongings from the
Cabinet
• Contact Clean room chemists
> return back the things that you have borrowed (i.e.
timer and/or Tweezers)
> return back your chemicals.
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CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
36

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
fume Hoods

Glassware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
CHEMICAL PROCESSING AND SAFETY
 Transportation of chemicals
• From storage-room to the Clean Room (Transported by
chemists)
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CHEMICAL SAFETY COURSE
CHEMICAL PROCESSING AND SAFETY
 Transportation of chemicals
• From storage-room to the Clean Room (Transported by
chemists)
Building 5
Building 4
Building 1
Clean Room
Building 2
Main gate
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Building 3
Allowed to be
used for
transportation
of chemicals
CHEMICAL SAFETY COURSE
CHEMICAL PROCESSING AND SAFETY
 Transportation of chemicals
• From storage-room to the Clean Room (Transported by
chemists)
• In the Clean Room (dress proper protective wear)
¤ Do not carry more than one bottle and use both
hands to hold the bottle.
¤ Use chemical transport cart ( if bottles>1)
 weighing
 measuring
In Fume Hoods
 Mixing
dress proper protective wear
Processing
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In Fume Hoods or at the Wet
benches
dress proper protective wear
CHEMICAL SAFETY COURSE
CHEMICAL PROCESSING AND SAFETY
dress proper protective wear when you move chemicals
Do not wash the empty chemical bottles. Just empty them
properly and leave them in the right cabinet. Only photoresist
bottle must be washed and cleaned with acetone.
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CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
41

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
fume Hoods

Glassware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
Handling and storage of chemicals
 Liquid acid cabinets
• acids
• bases
• Oxidizing chemicals
• water based chemicals
 Solid chemical cabinet
 Solvent cabinets
 Toxin cabinet
Chemicals must be stored in their respective cabinets
but not in the Fume Hoods except for strongly
malodorous compounds
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CHEMICAL SAFETY COURSE
Handling and storage of chemicals
Safety cabinet for flammable solvents
ROOM 3R49
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CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
44

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
fume Hoods

Glassware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
General check list.
Check;

If you run/use right equipment?

If ventilation system is operating properly.
•
min. face velocity for Fume Hoods should be 0,4
m/sec (with sash at working level).
•
min. face velocity on wet bench surface should be
approximately 0,5 m/s
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
General check list.
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
General check list.
Check;

47
If protective wears are available?
•
Gloves (no hole)
•
face shields
•
Aprons, in case they are needed

If decontamination equipments are available

Where the emergency shut down bottom is?
CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Fume Hood safety

keep the sash at the marked operating level during the
treatment of chemicals. Proper sash work height is 46 cm

Do not place your face inside the hood. Keep hands out as
much as possible

Only malodorous chemicals are allowed to be stored in a
Hood.

Work at least 25 cm inside hood.

Avoid blocking off baffle exhaust slots. Elevate
large equipments 5 cm off the base of the hood

Large amounts of chemical obstruct airflow and
reduce useful space
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Fume Hood safety
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Fume Hood safety

Use slow direct movements

Do not slam the doors in the room while activity at
the hoods are being in progress

Stored chemical in the Hood
•
Capped or covered and identified by name,
concentration, and hazard symbol*
•
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Not to be in close proximity to incompatible chemicals.
CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Fume Hood safety

51
Stored chemical in the Hood
•
Capped or covered and identified by name,
concentration, and hazard symbol.
•
Not to be in close proximity to incompatible
chemicals
CHEMICAL SAFETY COURSE
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CHEMICAL SAFETY COURSE
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CHEMICAL SAFETY COURSE
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CHEMICAL SAFETY COURSE
Use a shelf to
improve air flow
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CHEMICAL SAFETY COURSE
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Fume Hood safety
MARK YOUR BEAKER
Do as follows:
1. Write
a. what the beaker contains.
b. your name and the date.
2. The mark on the beaker must be removed before washing
the beaker in the dishwasher.
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Fume Hood safety
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Fume Hood safety
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Fume Hood safety
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Wet Bench safety
Standard wet processes are carried out in the wet benchbaths
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
Wet Bench safety
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
Wet bench license

protective equipments

Do not mix the chemicals in the baths

baths with circulating pump should not be left empty.

Do not place your face directly above the bath
1.
When you are close to a wet bench you have to wear at
least the face shield.
2.
Try to use passage 3R47 to move from on corridor to the
other.
CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
General guidelines for processing of chemicals
 Clean up the spills after any process
• Use the clean room wipers
• Leave the contaminated wipers in the right wiper-box.
• Wipers contaminated with HF should be treated in a
different way.
• Those yellow roll wipers are not Clean Room compatible.
A. Used to absorb large amount of chemicals on
the floor.
B. Must not leave on the floor for a long period of
time
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CHEMICAL SAFETY COURSE
Safety guidelines for Wet Benches and fume Hoods
General guidelines for processing of chemicals
Each wafer carrier has room number and process name on it.
 Always check if the resin/teflon cover of the Stirring rod or
the Magnetic Stir Bar are not torn up or abraded
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CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
65

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
fume Hoods

Glassware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
Glassware and resin ware
 Three classes
• Class I : Not to be washed in dish washing machine. Used for
treatment of water, RCA1, RCA2, and dilute
solutions.
• Class II : Used for treating pure acids, solvents, and water
soluble salts.
• Class III : Used for treatment of water insoluble organic
solvents
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CHEMICAL SAFETY COURSE
Glassware and resin ware
 Glassware in Hoods should be marked (the mark should be
remove before they to be washed)
Use the right resin ware for right process. read
”General properties for Resin products”, appendixA1.
 Each class(II and III) should be washed separately.
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CHEMICAL SAFETY COURSE
Glassware and resin ware
All process laboratory users are responsible to learn the rules
regarding handling of glassware during the processing of
chemicals (wet bench license course).
Use of wrong glassware contaminates the container which in
turn damages the others process studies.
Contact the chemists if you have any question regarding
handling of glassware
68
CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
69

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
Fume Hoods

Glassware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
Acid and solvent drains
Acid drains
• Acid wastes
• Base wastes
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CHEMICAL SAFETY COURSE
Acid and solvent drains
Acid drains
• Cool down the warm acids or bases to room temperature
before you spill out them in the drains.
• Concentrated acids and/or bases should be diluted in large
amount of water before they poured in the drain
• Contact the chemists if the waste is large amount of
concentrated chemical.
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CHEMICAL SAFETY COURSE
Acid and solvent drains
Acid drains
To dilute acids and/or bases pour them in water but not vice
versa.
It is absolutely forbidden to pour acids and/or bases in
solvent drain or vice versa.
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CHEMICAL SAFETY COURSE
Acid and solvent drains
Solvent drain
• Halogen free solvents
• Non hazardous to Environment
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CHEMICAL SAFETY COURSE
Acid and solvent drains
Solvent drain
Solvent
Halogen free?
Yes
NO
Hazardous to
environment?
No
Yes
Destruction
More than 1 liter
NO
Yes
Contact chemists
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Spill out in the solvent
drain
CHEMICAL SAFETY COURSE
Acid and solvent drains
Solvent drain
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CHEMICAL SAFETY COURSE
Acid and solvent drains
Solvent drain
Destruction
Never mix halogenated solvent with halogen free solvents.
Contact the chemists in case You want to pour different Chemicals
waste in the same container
76
CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
77

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
Fume Hoods

Glassware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
Hazardous chemicals
”What is it that is not poison? All things are poison, and nothing is
without poison. It is the dose only that makes a thing not a poison.”
___ Paracelsus
78
(1493-1541)
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Hydrofluoric acid, HF
• As toxin is harmful by;
 inhalation
 skin contact
 swallowing
• Severe corrosive effect (burns) by;
 Exposure of concentrated (i.e. 50% or stronger) HF acid
to 1% or more body surface area(BSA).
 Exposure of HF of any concentration to 5% or more BSA.
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CHEMICAL SAFETY COURSE
Hazardous chemicals
 Hydrofluoric acid, HF
• Time of exposure to onset of symptoms is related to the
concentration of HF.
Concentration
80
Hours before onset of symptoms
> 50%
Immediately produces symptoms with deep and
painful tissue damages.
20- 50%
Immediately produces symptoms. Sign of deep
tissue damages are shown after several hours
12%
1 hour. Sign of deep tissue damages are shown
after 24 hours.
< 7%
Several hours
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Hydrofluoric acid, HF
• Emergency Treatment of HF Skin Exposure
The victim must always be examined by medical personal.
• First aid suggestions
Carefully Remove contaminated clothing to prevent further
exposure.
Wash the area with copious quantities of water
or saturated solution of sodium bicarbonate for at least 1530 minutes.
81
Apply HF-antidote gel to the affected area. Repeat
continuously until the victim receives medical assistance.
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Hydrofluoric acid, HF
Before treating HF check if;
•
”HF antidote gel” is available in the room.
•
The gel is not more than two years old.
Note that ”HF antidote gel” should not be REUSED.
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CHEMICAL SAFETY COURSE
Hazardous chemicals
 Cyanide, CN
Cyanide refers to large family of chemical each of which contains a
chemical unit called cyanide unit
CN
Chemical compounds which contains carbon (C) and nitrogen (N) could,
under very specific conditions, produce the cyanide ion. The cyanide
ion is responsible for cyanide poisoning.
Cyanide poisoning takes place when cyanide compounds break down in
the body to release the cyanide ion. Degree of cyanide toxicity depends
on how easily cyanide ion is released from rest of compound.
83
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Cyanide, CN
 Cyanide compounds can enter the body by;
 inhalation.
 ingestion (swallowing).
 absorption through the skin and/or
eyes.
84
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Cyanide, CN
 The early symptoms of cyanide poisoning
 Weakness
 Headache
 Giddiness
 Confusion
 Anxiety
 Nausea
 Vomiting
85
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Cyanide, CN
 First aid measures for cyanide poisoning
 Call for medical assistance “Toxin Information
Center”.
 Remove the victim to fresh air away from the source
of cyanide contamination
 No mouth-to mouth respiration
 Nothing should be given by moth if the victim is
losing consciousness.
86
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Cyanide, CN
 First aid measures for cyanide poisoning
In the case of skin contact
o remove contaminated clothing
o wash the contaminated skin for 15-20 minutes
with copious quantities of warm water.
 In the case of eye contact wash the contaminated eye
for 15-20 minutes with copious quantities of water.
 If cyanide has been swallowed rinse the victims
mouth and let him/her to drink 300 ml of water
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CHEMICAL SAFETY COURSE
Hazardous chemicals
 Cyanide, CN
 First aid measures for cyanide poisoning
 Oxygen (100%) should be given by a person trained
in its use.
88
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Cyanide, CN
CYANIDE CAN EASYLY REACT WITH ACIDS AND
LIBERATES POISONOUS GAS (HCN, Hydrogen
cyanide).
Do not store cyanide and acids in the same place.
Do not treat cyanide in the acid Hoods
89
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Potassium hydroxide, KOH
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CHEMICAL SAFETY COURSE
Hazardous chemicals
 Potassium hydroxide, KOH
 At high conc. causes immediate blindness with
eye contact. Wash the contaminated eye for 15
minutes.
 Harmful when swallowed.
 Causes sever burns with skin contact
91
CHEMICAL SAFETY COURSE
Hazardous chemicals
 7-up (Piranha), Mixture of H2SO4 and H2O2(1:1)
92
CHEMICAL SAFETY COURSE
Hazardous chemicals
 7-up (Piranha), Mixture of H2SO4 and H2O2(1:1)
• Add H2O2 to H2SO4
93
CHEMICAL SAFETY COURSE
Hazardous chemicals
 7-up (Piranha), Mixture of H2SO4 and H2O2(1:1)
• Add H2O2 to H2SO4
H2O2 + H2SO4
94
H2SO5 + H2O
CHEMICAL SAFETY COURSE
Hazardous chemicals
 7-up (Piranha), Mixture of H2SO4 and H2O2(1:1)
• Add H2O2 to H2SO4
H2O2 + H2SO4
H2SO5 + H2O
Peroxymonosulphuric acid (Caro’s acid)
95
CHEMICAL SAFETY COURSE
Hazardous chemicals
 7-up (Piranha), Mixture of H2SO4 and H2O2(1:1)
• Add H2O2 to H2SO4
H2O2 + H2SO4
H2SO5 + H2O
Peroxymonosulphuric acid (Caro’s acid)
• The mixing process generates heat.
• The mixture is unstable, energetic, and potentially
explosive ( if H2O2 Con.> H2SO4 Con.).
• Leave the hot solution in open container until cool.
• Hot 7up +organic compounds explosion
96
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
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CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
Oxidizers, because of their chemical structures, have
excess oxygen which may be liberated, especially at
higher temperatures.
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CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
Oxidizers, because of their chemical structures, have
excess oxygen which may be liberated, especially at
higher temperatures.
The primary hazard
Stimulate the combustion of organic materials.
99
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
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CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
Classification System for Oxidizing Materials
101
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
Classification System for Oxidizing Materials
Class Rating
102
Hazard Description
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
Classification System for Oxidizing Materials
103
Class Rating
Hazard Description
Class 1
may increase the
burning rate of combustible
material.
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
Classification System for Oxidizing Materials
104
Class Rating
Hazard Description
Class 1
may increase the
burning rate of combustible
material.
Class 2
moderately increase the burning
rate of combustible material.
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
Classification System for Oxidizing Materials
105
Class Rating
Hazard Description
Class 1
may increase the
burning rate of combustible
material.
Class 2
moderately increase the burning
rate of combustible material.
Class 3
severe increase in the burning
rate of combustible material.
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
Classification System for Oxidizing Materials
106
Class Rating
Hazard Description
Class 1
may increase the
burning rate of combustible
material.
Class 2
moderately increase the burning
rate of combustible material.
Class 3
severe increase in the burning
rate of combustible material.
Class 4
undergo an explosive reaction
when exposed to heat.
CHEMICAL SAFETY COURSE
Hazardous chemicals
 Oxidizing agents
Classification System for Oxidizing Materials
Typical examples of each class of oxidizing agent
107
CHEMICAL SAFETY COURSE
Hazardous chemicals
After any chemical process and before leaving the Clean Room or running
any process other than chemical process WASH YOUR HANDS
Try not to carry out any chemical process after official working hours or
on weekends. Inform the others in the Clean Room in case you have to
run a chemical process during these hours
108
CHEMICAL SAFETY COURSE
TREATMENT OF CHEMI CALS
109

Assignment of responsibilities

General procedures

Chemical processing and safety

Handling and storage of chemicals

Safety guidelines for Wet Benches and
Fume Hoods

Glassware and resin ware

Acid and solvent drains

Hazardous chemicals

Chemical emergency
CHEMICAL SAFETY COURSE
Chemical emergency
That is the mater of seconds
To be able to rescue the victim at right time and in a right way
one has to be well grounded in emergency help regarding
different chemical attack
Read well the section 4 in MSDS of all chemicals that you and
your colloquies will be processing in the laboratory location
Note that the victim can not rescue himself/herself.
110
CHEMICAL SAFETY COURSE
Chemical emergency
 Basic procedure
• Rescue the victim, following the instruction given in section
4 of the respective MSDS.
• Inform the Clean Room chemists.
• Call emergency if necessary, Ambulance, Rescue Center, and
Toxin-Information. Appendix A8.
• Inform the others to evacuate the contaminated area.
• Decontaminate the area if possible.
111
CHEMICAL SAFETY COURSE
Chemical emergency
NOTE: IN THE EMERGENCY CALL, GIVE THE NAME ,
CONCENTRATION, VOLUME, AND EXPOSURE-TIME OF THE
CHEMICAL THAT HAS CAUSED THE HARM. THIS INFORMATION WILL
HELP THE PHYSICIAN TO BE WELL PREPARED FOR FURTHER
RESCUE.
Do not forget to report the accident to the Chief Safety Man
Chief Safety Man: Amit Patel
112
Tel
: 471 6379
Mobile
: 070 167 94 96
CHEMICAL SAFETY COURSE
CHEMISTRY COURSE
1.
2.
3.
4.
113
TREATMENT OF CHEMI CALS
DECONTAMI NATI ON
DESTRUCTI ON OF CHEMI CAL WASTE
NITROGEN
CHEMICAL SAFETY COURSE
Decontamination
Contamination takes place when chemical are happen to be in contact
with unassigned place, area, and equipment where the chemical are not
under full control.
All Clean Room users are responsible to decontaminated and clean up
The wet benches, Hoods, and other equipment that have been
contaminated by SMALL amount of chemical.
114
CHEMICAL SAFETY COURSE
Decontamination
Contact the Clean Room chemists if you do not know/ are not sure how
to decontaminate.
of large amount of chemicals
Contact Clean Room
Spill of unknown chemical
Spill of HF and/or CN
115
Chemists
CHEMICAL SAFETY COURSE
Decontamination
 Decontamination step by step
• Contact Clean Room chemists.
• Inform the other users in the Clean Room on contamination.
• Use suitable protective wear , aprons, gloves,masks, filters,
and shoe covers .
• Cleanup the spill, appendix A4.
 Use the white wipers to cleanup the equipments.
 Use yellow wipers(roll wipers) to cleanup the floor.
• Pick up contaminated wipers in the plastic bags for chemical
waste(yellow plastic bags, available in room 3R47 or 15).
116
CHEMICAL SAFETY COURSE
Decontamination
 Decontamination step by step
• Write down the name of the contaminant on the bags,
following the instruction given in section 3.
• Leave the bags in the right Hood (not the bags with yellow
wipers in).
117
CHEMICAL SAFETY COURSE
Decontamination
The yellow wipers are Clean Room incompatible wipers and they
should not be left on the floor for long time. These wipers should be
removed out of cleanroom immediately after cleanup.
Clean Room cleaners (charwomen) are not Decontamination-Crew
and must not be in contact with any chemical while cleaning.
Those who carry out chemical process are responsible to leave
things tidy and ensure that the room is free of any contaminant
which may hazards the cleaners.
118
CHEMICAL SAFETY COURSE
Decontamination
Decontamination kits
• Place: Rooms 3R87 and 3R47
• Contents: Appendix A2
• Filter guide list. Appendix A5
• Quick reference for spill cleanups A4
119
CHEMICAL SAFETY COURSE
CHEMISTRY COURSE
1.
2.
3.
4.
120
TREATMENT OF CHEMI CALS
DECONTAMI NATI ON
DESTRUCTI ON OF CHEMI CAL WASTE
NITROGEN
CHEMICAL SAFETY COURSE
Destruction of chemical waste
Those chemical waste that should not be poured in the drains will
be subject to destruction.
Those who produce chemical waste are responsible to handle the
wastes following their respective instruction.
121
CHEMICAL SAFETY COURSE
Destruction of chemical waste
Clean bottle
3R87 or3R47
Do not use glass
bottle for HF
122
Information on waste
CHEMICAL SAFETY COURSE
Destruction of chemical waste
Chemical waste
Date:
Contact person:
Phone:
Mobile:
Department:
Unit:
Contents
Water content:
%
pH:
Substances in %
_______________________________________
Cancerogenous substances A
123
B
CHEMICAL SAFETY COURSE
Destruction of chemical waste
Chemical waste
Date:
Contact person:
Phone:
Mobile:
Department:
Unit:
Contents
Water content:
%
pH:
Substances in %
_______________________________________
Cancerogenous substances A
124
B
CHEMICAL SAFETY COURSE
ROOM 3R47
125
CHEMICAL SAFETY COURSE
Destruction of chemical waste
Chemical waste
Date:
Contact person:
Phone:
Mobile:
Department:
Unit:
Contents
Water content:
%
pH:
Substances in %
_______________________________________
Cancerogenous substances A
126
B
CHEMICAL SAFETY COURSE
Destruction of chemical waste
Chemical waste
Date:
Contact person:
Phone:
Mobile:
Department:
Unit:
Contents
Water content:
%
pH:
Substances in %
_______________________________________
Cancerogenous substances A
B
Appendix10
127
CHEMICAL SAFETY COURSE
Destruction of chemical waste
Clean bottle
Information on waste
3R87 or 3R47
Do not use glass
bottle for HF
128
Fill the bottle
CHEMICAL SAFETY COURSE
Destruction of chemical waste
Clean bottle
Information on waste
3R87 or 3R47
Do not use glass
bottle for HF
Fill the bottle
Chemical cabinet
• Solid chemicals
• Solvents
• Acids
129
CHEMICAL SAFETY COURSE
Destruction of chemical waste
 Handling the wipers contaminated by chemical spills
Yellow bags
3R87 or 3R47
Information on spill
Chemical waste label
Fill the bag
White wipers
Hood
Yellow wipers
Washing bench
in room 3R85
Contact the Clean Room chemists
130
CHEMICAL SAFETY COURSE
CHEMISTRY COURSE
1.
2.
3.
4.
131
TREATMENT OF CHEMI CALS
DECONTAMI NATI ON
DESTRUCTI ON OF CHEMI CAL WASTE
NITROGEN
CHEMICAL SAFETY COURSE
Nitrogen
Liquid
Nitrogen
Gas

Liquid Nitrogen
Properties
•
odorless
•
colorless
•
Liquid @ –196 oC
•
Evaporates immediately at
atmosphere
1 liter liquid Nitrogen gives 700 liter Nitrogen gas at STP.
132
Liquid Nitrogen must always be handled in isolate containers.
CHEMICAL SAFETY COURSE
Nitrogen
Liquid Nitrogen
 Hazards handling Liquid Nitrogen
• Extreme Cold Hazard
Liquids Nitrogen can produce effects on the skin
similar to a thermal burn. Brief exposures that would
not affect skin on the face or hands can damage
delicate tissues such as the eyes.
• Fire Hazard
At pressure < 3,5 bar absolute
• Physical characteristic of material
Liquids Nitrogen affects many materials properties by
weakening their strength
133
CHEMICAL SAFETY COURSE
Nitrogen
Liquid Nitrogen
 Handling and safety rules
• Warning notice ”Warning, liquid Nitrogen”
• Handling and safety manual must be available in the Lab.
Location.
• Wear safety goggles and a face shield when transferring
liquid nitrogen.
• Wear gloves when touching objects cooled by liquid
nitrogen. Gloves should be loose fitting so they can be
thrown off if liquid were to pour inside them.
134
CHEMICAL SAFETY COURSE
Nitrogen
Liquid Nitrogen
 Handling and safety rules
• Do not immerse gloves in liquid nitrogen. Liquid nitrogen
can penetrate at the seams and cause severe frost bite.
• Do not dip hollow tubes into liquid nitrogen, it may spurt
liquid.
135
CHEMICAL SAFETY COURSE
Nitrogen
Nitrogen Gas
Earth’s air
70-80 % N2
20 % O2
1 % Ar
< 1% other gases
Breathing 100% Nitrogen gas results in Vomiting and death.
 The early symptoms of nitrogen effects
• Giddiness
• Victim will be off his balance
• Confusion
136
• insensibility on fingertips
• unconsciousness
CHEMICAL SAFETY COURSE
CHEMISTRY COURSE
Safety rules can not protect you
If you do not think of the probable
hazards before you face with
them.
137