MSDS Name:   Thioglycolic acid
Synonym:   Mercaptoacetic acid; Acetyl mercaptan; Thiolacetic acid; Thioglycolic acid; 2-Mercaptoacetic acid; Thiovanic acid; Ethanethioic acid.
Company:   AboutChem.com

**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 68-11-1 |Thioglycolic acid | >96 | 200-677-4 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T C
Risk Phrases: 23/24/25 34

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Toxic by inhalation, in contact with skin and if swallowed. Causes
burns.Stench.

Potential Health Effects
Eye:
Causes severe eye burns. May cause irreversible eye injury.
Skin:
May be fatal if absorbed through the skin. Causes skin burns.
Ingestion:
Harmful if swallowed. Causes gastrointestinal tract burns.
Mercaptans may cause nausea and headache. Exposure to high
concentrations of mercaptans can produce unconsciousness with
cyanosis (bluish discoloration of skin due to deficient oxygenation
of the blood), cold extremities and rapid pulse.
Inhalation:
May cause severe irritation of the respiratory tract with sore
throat, coughing, shortness of breath and delayed lung edema.
Olfactory fatigue may occur. Exposure to high concentrations of
mercaptans can produce unconsciousness with cyanosis (bluish
discoloration of skin due to deficient oxygenation of the blood),
cold extremities and rapid pulse. Mercaptans may cause nausea and
headache.
Chronic:
No information found.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Get medical aid immediately.
Skin:
POISON material. In case of contact, get medical aid immediately.
Immediately flush eyes or skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes. Wash
clothing before reuse. Destroy contaminated shoes.
Ingestion:
If swallowed, do NOT induce vomiting. Get medical aid immediately.
If victim is fully conscious, give a cupful of water. Never give
anything by mouth to an unconscious person.
Inhalation:
POISON material. If inhaled, get medical aid immediately. Remove
victim to fresh air. If not breathing, give artificial respiration.
If breathing is difficult, give oxygen.
Notes to Physician:

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. Approach fire from upwind to avoid hazardous vapors
and toxic decomposition products.
Extinguishing Media:
Water or foam may cause frothing. Use water spray, dry chemical, or
carbon dioxide.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. Avoid runoff into storm sewers and
ditches which lead to waterways. Clean up spills immediately,
observing precautions in the Protective Equipment section. Provide
ventilation.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Do not get in eyes, on skin, or on clothing.
Discard contaminated shoes. Do not breathe vapor or mist. Use only
with adequate ventilation or respiratory protection.
Storage:
Keep refrigerated. (Store below 4C/39F.) Keep container closed
when not in use. Corrosives area. Store in a cool, well-ventilated
area away from incompatible substances.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate general or
local exhaust ventilation to keep airborne concentrations below the
permissible exposure limits.
Exposure Limits
CAS# 68-11-1:
United Kingdom, WEL - TWA: 1 ppm TWA; 3.8 mg/m3 TWA
United Kingdom, WEL - STEL: 3 ppm STEL; 11.4 mg/m3 STEL

Belgium - TWA: 1 ppm VLE; 3.9 mg/m3 VLE
France - VME: 1 ppm VME; 5 mg/m3 VME
Germany: 4 mg/m3 TWA
Germany: Skin absorber
Malaysia: 1 ppm TWA; 3.8 mg/m3 TWA
Netherlands: 2 ppm STEL; 8 mg/m3 STEL
Netherlands: 1 ppm MAC; 4 mg/m3 MAC
Russia: 0.1 mg/m3 TWA
Spain: 1 ppm VLA-ED; 3.8 mg/m3 VLA-ED

Personal Protective Equipment

Eyes:
Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
A respiratory protection program that meets OSHA's 29
CFR 1910.134 and ANSI Z88.2 requirements or European
Standard EN 149 must be followed whenever workplace
conditions warrant respirator use.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Liquid
Color: clear, colorless
Odor: unpleasant odor - sulfide odor - garlic-like odor
pH: 1.6 (10% aq soln)
Vapor Pressure: 0.0868 mm Hg @ 25 deg C
Viscosity: 6.35 cPs @ 20 deg C
Boiling Point: 123 deg C @ 29 mm Hg
Freezing/Melting Point: -16.5 deg C
Autoignition Temperature: 350 deg C ( 662.00 deg F)
Flash Point: 128 deg C ( 262.40 deg F)
Explosion Limits, lower: 5.9%
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble.
Specific Gravity/Density: 1.325 @ 20C
Molecular Formula: C2H4O2S
Molecular Weight: 92.11

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions. Oxidizes when exposed to air.
Conditions to Avoid:
Excess heat, prolonged exposure to air.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong acids, strong bases, alkali metals,
alkaline earth metals.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, carbon dioxide, hydrogen sulfide.
Hazardous Polymerization: Will not occur.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 68-11-1: AI5950000
LD50/LC50:
CAS# 68-11-1: Inhalation, rat: LC50 = 210 mg/m3/4H; Oral, mouse:
LD50 = 242 mg/kg; Oral, rabbit: LD50 = 119 mg/kg; Oral, rat: LD50 =
114 mg/kg.
Carcinogenicity:
Thioglycolic acid -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****



**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Dispose of in a manner consistent with federal, state, and local regulations.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Shipping Name: THIOGLYCOLIC ACID
Hazard Class: 8
UN Number: 1940
Packing Group: II
IMO
Shipping Name: THIOGLYCOLIC ACID
Hazard Class: 8
UN Number: 1940
Packing Group: II
RID/ADR
Shipping Name: THIOGLYCOLIC ACID
Hazard Class: 8
UN Number: 1940
Packing group: II

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T C
Risk Phrases:
R 23/24/25 Toxic by inhalation, in contact with skin
and if swallowed.
R 34 Causes burns.
Safety Phrases:
S 25 Avoid contact with eyes.
S 27 Take off immediately all contaminated clothing.
S 28C After contact with skin, wash immediately with
a sodium borate solution.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 68-11-1: 1
Canada
CAS# 68-11-1 is listed on Canada's DSL List.
CAS# 68-11-1 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 68-11-1 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

MSDS Creation Date: 10/23/1998 Revision #3 Date: 3/18/2003

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

更多搜索