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68-11-1

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                                                                THIOGLYCOLIC ACID
Material Safety Data Sheet
Arkema Inc.
1 PRODUCT AND COMPANY IDENTIFICATION

EMERGENCY PHONE NUMBERS:
Thio and Fine Chemicals
Chemtrec: (800) 424-9300 (24hrs) or (703) 527-3887
Arkema Inc.
Medical: Rocky Mountain Poison Control Center
2000 Market Street
(866) 767-5089 (24Hrs)
Philadelphia, PA 19103
Information Telephone Numbers Phone Number Available Hrs
Customer Service 1-800-628-4453 8:30 to 5:30 EST

Product Name THIOGLYCOLIC ACID
Product Synonym(s) TGA

Chemical Family Thiovanic Acid
Chemical Formula C2H4O2S
Chemical Name Acetic acid, mercapto-
EPA Reg Num
Product Use


2 COMPOSITION / INFORMATION ON INGREDIENTS

Ingredient Name CAS RegistryNumber Typical % OSHA
Thioglycolic acid 68-11-1 100 Y
The substance(s) marked with a "Y" in the OSHA column, are identified as hazardous chemicals according to the
criteria of the OSHA Hazard Communication Standard (29 CFR 1910.1200)

This material is classified as hazardous under Federal OSHA regulation.

The components of this product are all on the TSCA Inventory list.


3 HAZARDS IDENTIFICATION

Emergency Overview
Colorless liquid; irritating odor

DANGER!
CAUSES EYE AND SKIN BURNS. MAY CAUSE BLINDNESS.
CAUSES SEVERE DIGESTIVE TRACT BURNS.
HARMFUL IF SWALLOWED.
HARMFUL IF ABSORBED THROUGH SKIN.
CAUSES RESPIRATORY TRACT IRRITATION.


Potential Health Effects

Inhalation and skin contact are expected to be the primary routes of occupational exposure to this material. Based on
single exposure animal tests, it is considered to be moderately toxic if swallowed, absorbed through the skin or inhaled
and corrosive to eyes and skin. Vapor may be severely irritating to the eyes and respiratory tract. If swallowed, this
material may cause severe irritation and injury to the mouth, throat and digestive tract. Medical conditions that may be
aggravated by exposure to this material include lung disease or limited respiratory capacity.




Product Code: 000301 Page 1
Revision: 7 Issued: 22 DEC 2005 of 6
THIOGLYCOLIC ACID
Material Safety Data Sheet
Arkema Inc.

4 FIRST AID MEASURES

IF IN EYES, immediately flush with plenty of water for at least 15 minutes. Get medical attention.

IF ON SKIN, immediately flush with plenty of water. Remove contaminated clothing and shoes. Get medical
attention. Wash clothing before reuse. Thoroughly clean shoes before reuse.

IF SWALLOWED, do NOT induce vomiting. Give water to drink. Get medical attention immediately. NEVER
GIVE ANYTHING BY MOUTH TO AN UNCONSCIOUS PERSON.

IF INHALED, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give
oxygen. Get medical attention.


5 FIRE FIGHTING MEASURES

Fire and Explosive Properties
Auto-Ignition Temperature 288 C
Flash Point 110 C (230 F) Flash Point Method PMCC
Flammable Limits- Upper NE
NE
Lower
Extinguishing Media
Use water spray, carbon dioxide, foam or dry chemical.

Fire Fighting Instructions
Water may be ineffective. Use water spray or water fog to cool surrounding surfaces and prevent fire damage
or rupture of containers. Fire fighters and others who may be exposed to products of combustion should wear
full fire fighting gear (full Bunker Gear) and self-contained breathing apparatus (pressure demand NIOSH
approved or equivalent). Fire fighting equipment should be thoroughly decontaminated after use.

Fire and Explosion Hazards
When burned, the following hazardous products of combustion can occur:
Hydrogen sulfide
Sulfur oxides
Oxides of carbon


6 ACCIDENTAL RELEASE MEASURES

In Case of Spill or Leak
Contain spill. Stop leak at source if this can be done safely. Ventilate area. Nonessential personnel should
leave the area until cleanup is completed. Pump liquid into DOT-approved drums for disposal. Absorb
remaining liquid onto inert absorbent and place in DOT approved drums for disposal. Wash area with water.
Keep concentrate and wash water from entering sewers or waterways. Consult a regulatory specialist to
determine appropriate state or local reporting requirements, for assistance in waste characterization and/or
hazardous waste disposal and other requirements listed in pertinent environmental permits.


7 HANDLING AND STORAGE




Product Code: 000301 Page 2
Revision: 7 Issued: 22 DEC 2005 of 6
THIOGLYCOLIC ACID
Material Safety Data Sheet
Arkema Inc.

7 HANDLING AND STORAGE

Handling
Do not get in eyes, on skin or on clothing.
Keep container closed.
Use only with adequate ventilation.
Wash thoroughly after handling.
Do not taste or swallow.


Emptied container retains vapor and product residue. Observe all labeled safeguards until container is
cleaned, reconditioned or destroyed.

Storage
Keep container closed. Store in a cool, dry, well ventilated area. Keep away from food and drink. Isolate
from incompatible materials (see Section 10).


8 EXPOSURE CONTROLS / PERSONAL PROTECTION

Engineering Controls
Investigate engineering techniques to reduce exposures below airborne exposure limits. Provide ventilation
if necessary to control exposure levels below airborne exposure limits (see below). If practical, use local
mechanical exhaust ventilation at sources of air contamination such as open process equipment. Consult
ACGIH ventilation manual or NFPA Standard 91 for design of exhaust systems.

Eye / Face Protection
Where there is potential for eye contact, wear a face shield, chemical goggles, and have eye flushing
equipment immediately available.

Skin Protection
Wear appropriate chemical resistant protective clothing and chemical resistant gloves to prevent skin
contact. Butyl rubber or Neoprene Gloves should be worn when handling this material. Wear chemical
goggles, a face shield, and chemical resistant clothing such as a rubber apron when splashing may occur.
Rinse immediately if skin is contaminated. Remove contaminated clothing promptly and wash before reuse.
Clean protective equipment before reuse. Provide a safety shower at any location where skin contact can
occur. Wash skin thoroughly after handling.

Respiratory Protection
Avoid breathing vapor or mist. Where airborne exposure is likely, use NIOSH approved respiratory
protection equipment appropriate to the material and/or its components. Full facepiece equipment is
recommended and, if used, replaces need for face shield and/or chemical goggles. If exposures cannot be
kept at a minimum with engineering controls, consult respirator manufacturer to determine appropriate type
equipment for given application. Observe respirator use limitations specified by NIOSH or the manufacturer.
For emergency and other conditions where there may be a potential for significant exposure, use an
approved full face positive-pressure, self-contained breathing apparatus or positive-pressure airline with
auxiliary self-contained air supply. Respiratory protection programs must comply with 29 CFR 搂 1910.134.


Airborne Exposure Guidelines for Ingredients
Exposure Limit Value

Thioglycolic acid
ACGIH Skin designator - Y


Product Code: 000301 Page 3
Revision: 7 Issued: 22 DEC 2005 of 6
THIOGLYCOLIC ACID
Material Safety Data Sheet
Arkema Inc.



Thioglycolic acid
ACGIH TWA - 1 ppm 3.8 mg/m3
-Only those components with exposure limits are printed in this section.
-Skin contact limits designated with a "Y" above have skin contact effect. Air sampling alone is insufficient to accurately quantitate
exposure. Measures to prevent significant cutaneous absorption may be required.
-ACGIH Sensitizer designator with a value of "Y" above means that exposure to this material may cause allergic reactions.
-WEEL-AIHA Sensitizer designator with a value of "Y" above means that exposure to this material may cause allergic skin reactions.


9 PHYSICAL AND CHEMICAL PROPERTIES

Colorless liquid; irritating odor
Appearance/Odor
pH NE
Specific Gravity 1.325
Vapor Pressure 0.1 hPa (mbar) @ 20 C (68F)
Vapor Density NE
Melting Point NA
Freezing Point -16.5 C (2.3 F)
Boiling Point 101.5 C (214.7 F)
Solubility In Water Completely soluble
Solubility in Other Materials Alcohols, ethers
Evaporation Rate NA
Viscosity 6.55 mPa.s (cP) @ 20 C
Molecular Weight 92.1
n-Octanol/Water Partition Coefficient log Pow = 0.059
Other Physical Data Refractive index: 1.50 @ 20 C
Store at a temperature below 10 C (50 F)


10 STABILITY AND REACTIVITY


Stability
This material is chemically stable under normal and anticipated storage and handling conditions.

Hazardous Polymerization
Does not occur.

Incompatibility
Avoid contact with strong acids, bases or oxidizers.
Hazardous Decomposition Products
None known.


11 TOXICOLOGICAL INFORMATION

Toxicological Information
Data on this material and/or its components are summarized below.

Single exposure (acute) studies indicate:
Oral - Moderately Toxic to Rats and Mice (LD50 54-73 mg/kg)
Dermal - Moderately Toxic to Rabbits (LD50 848 mg/kg)


Product Code: 000301 Page 4
Revision: 7 Issued: 22 DEC 2005 of 6
THIOGLYCOLIC ACID
Material Safety Data Sheet
Arkema Inc.

11 TOXICOLOGICAL INFORMATION

Inhalation - Moderately Toxic to Rats (4-hr LC50 0.21 mg/l)
Eye Irritation - Corrosive to Rabbits
Skin Irritation - Corrosive to Rabbits

No skin allergy was observed in guinea pigs following repeated exposure. No birth defects were observed in
the offspring of rats (oral & dermal) or rabbits (dermal) exposed during pregnancy, even at doses that produced
adverse effects in the mothers. No genetic changes were observed in tests using bacteria, animal cells or
animals.


12 ECOLOGICAL INFORMATION

Ecotoxicological Information
Data on this material and/or its components are summarized below.

This material is slightly toxic to fathead minnow (96-hr LC50 30 mg/l), Daphnia magna (48-hr LC50 38 mg/l),
rainbow trout (24-hr LC50 >5 mg/l), bluegill sunfish (24-hr LC50 >5 mg/l), sea lamprey (24-hr LC50 >5 mg/l) and
algae (72-hr IC50 13 mg/l; NOEC 7.6 mg/l). The 28-day LC0 for ide is 660 mg/l.
Chemical Fate Information
Data on this material and/or its components are summarized below.

Thioglycolic acid
This material is not readily biodegradable (21% after 28-days; OECD 301 A), but is inherently biodegradable
(100% after 14-days; OECD 302 C). It is not expected to bioaccumulate (log Pow 0.06) and has slight potential
to adsorb in soil and sediment (log Koc 1.43).

13 DISPOSAL CONSIDERATIONS

Waste Disposal
Incineration is the recommended method for disposal observing all local, state and federal regulations. Note:
Chemical additions to, processing of, or otherwise altering this material may make this waste management
information incomplete, inaccurate, or otherwise inappropriate. Furthermore, state and local waste disposal
requirements may be more restrictive or otherwise different from federal laws and regulations.

14 TRANSPORT INFORMATION

DOT Name Thioglycolic Acid
DOT Technical Name
DOT Hazard Class 8(6.1)
UN Number 1940
DOT Packing Group PG ll
RQ No
DOT Special Information Primary Hazard - CORROSIVE

For Domestic Shipments:
Add Subsidiary Hazards - TOXIC

When transporting by ocean vessel, use primary label only.




Product Code: 000301 Page 5
Revision: 7 Issued: 22 DEC 2005 of 6
THIOGLYCOLIC ACID
Material Safety Data Sheet
Arkema Inc.

15 REGULATORY INFORMATION

Hazard Categories Under Criteria of SARA Title III Rules (40 CFR Part 370)
Immediate (Acute) Health Y Fire N
Reactive
Delayed (Chronic) Health N N
Sudden Release of Pressure N
The components of this product are all on the TSCA Inventory list.


Ingredient Related Regulatory Information:
CERCLA RQ SARA TPQ
SARA Reportable Quantities
Thioglycolic acid NE

Massachusetts Right to Know
This product does contain the following chemicals(s), as indicated below, currently on the Massachusetts Right to Know Substance
List.
Thioglycolic acid
New Jersey Right to Know
This product does contain the following chemical(s), as indicated below, currently on the New Jersey Right-to-Know Substances List.
Thioglycolic acid
Pennsylvania Right to Know
This product does contain the following chemical(s), as indicated below, currently on the Pennsylvania Hazardous Substance List.
Thioglycolic acid

16 OTHER INFORMATION


Revision Information

Revision Number 7
22 DEC 2005
Revision Date
Supercedes Revision Dated 11-OCT-2004
Revision Summary
Revised section 9.

Key
NE= Not Established NA= Not Applicable (R) = Registered Trademark




Arkema Inc. believes that the information and recommendations contained herein (including data and
statements) are accurate as of the date hereof. NO WARRANTY OF FITNESS FOR ANY PARTICULAR
PURPOSE, WARRANTY OF MERCHANTABILITY, OR ANY OTHER WARRANTY, EXPRESSED OR
IMPLIED, IS MADE CONCERNING THE INFORMATION PROVIDED HEREIN. The information provided
herein relates only to the specific product designated and may not be valid where such product is used in
combination with any other materials or in any process. Further, since the conditions and methods of use are
beyond the control of Arkema Inc., Arkema Inc. expressly disclaims any and all liability as to any results
obtained or arising from any use of the product or reliance on such information.




Product Code: 000301 Page 6
Revision: 7 Issued: 22 DEC 2005 of 6

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