2-mercaptopropanoic acid 79-42-5 MSDS
Name: 2-Mercaptopropionic acid 95% Material Safety Data Sheet
Synonym: Thiolactic acid; Alpha-mercaptopropanoic acid; 2-Thiopropionic aci
CAS: 79-42-5
Section 1 - Chemical Product   MSDS Name:2-Mercaptopropionic acid 95% Material Safety Data Sheet
Synonym:Thiolactic acid; Alpha-mercaptopropanoic acid; 2-Thiopropionic aci

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
79-42-5 2-Mercaptopropionic acid, 95% 95% 201-206-5
Hazard Symbols: C
Risk Phrases: 22 34

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Harmful if swallowed. Causes burns.Corrosive.Combustible liquid.Stench.
Potential Health Effects
Eye:
Causes eye burns. Lachrymator (substance which increases the flow of tears).
Skin:
Causes skin burns.
Ingestion:
Causes gastrointestinal tract burns. May cause perforation of the digestive tract.
Inhalation:
May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Skin:
Get medical aid. Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. 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. Will burn if involved in a fire.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam.

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.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Keep away from heat, sparks and flame. Do not get on skin or in eyes. Do not ingest or inhale. Use only in a chemical fume hood.
Storage:
Keep away from sources of ignition. Store in a cool, dry place.
Store in a tightly closed container. Corrosives area.

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 process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels.
Exposure Limits CAS# 79-42-5: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves and clothing to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Liquid
Color: clear colorless to slightly yellow
Odor: Unpleasant odor.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 102 deg C @ 16.00mm Hg
Freezing/Melting Point: 10 - 14 deg C
Autoignition Temperature: Not available.
Flash Point: 87 deg C ( 188.60 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: miscible with water.
Specific Gravity/Density: 1.1970g/cm3
Molecular Formula: C3H6O2S
Molecular Weight: 106.14

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Has not been fully evaluated.
Conditions to Avoid:
None reported.
Incompatibilities with Other Materials:
Strong oxidizing agents, strong bases, strong reducing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, sulfur oxides (SOx), including sulfur oxide and sulfur dioxide.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 79-42-5: UF5250000 LD50/LC50:
Not available.
Carcinogenicity:
2-Mercaptopropionic acid, 95% - 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: THIOLACTIC ACID
Hazard Class: 6.1
UN Number: 2936
Packing Group: II
IMO
Shipping Name: THIOLACTIC ACID
Hazard Class: 6.1
UN Number: 2936
Packing Group: II
RID/ADR
Shipping Name: THIOLACTIC ACID
Hazard Class: 6.1
UN Number: 2936
Packing group: II

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 22 Harmful if swallowed.
R 34 Causes burns.
Safety Phrases:
S 25 Avoid contact with eyes.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
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# 79-42-5: No information available.
Canada
CAS# 79-42-5 is listed on Canada's DSL List.
CAS# 79-42-5 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 79-42-5 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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