Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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3-Mercaptopropionic acid(107-96-0)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
3-Mercaptopropionic acid
Synonyms
3-Thiopropionic acid
beta-Mercaptopropanoic acid
CAS
107-96-0
Formula
C3H6O2S
Molecular Weight
106.14
EINECS
203-537-0
RTECS
UF5270000
RTECS Class
Other
Beilstein/Gmelin
773807
Beilstein Reference
4-03-00-00726
EC Class
toxic, corrosive

Physical and Chemical Properties

Appearance
Amorphous crystals or clear liquid, strong, acrid, sulfide-like odor, stench.
Solubility in water
Soluble
Melting Point
17 - 19
Boiling Point
217
Vapor Pressure
0.05 (25 C)
Density
1.2199 g/cm3 (20 C)
pKa/pKb
4.34 (pKa)
Partition Coefficient
.43
Heat Of Vaporization
50.0 kJ/mol
Heat Of Combustion
-2142 kJ/mol
Usage
Stabilizer, antioxidant, catalyst, chemical intermediate.
Refractive Index
1.491 (20 C)

First Aid Measures

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 to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

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

Hazards Identification

Ingestion
Harmful if swallowed. 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. Causes chemical burns to the respiratory tract.
Skin
Causes skin burns.
Eyes
Causes eye burns.
Hazards
Contact with metals may evolve flammable hydrogen gas.
EC Risk Phrase
R 25 34
EC Safety Phrase
S 26 36/37/39 45
UN (DOT)
2922

Exposure Controls/Personal Protection

Personal Protection
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 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Poison Class
2

Fire Fighting Measures

Flash Point
93
Autoignition
350
Fire Fighting
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. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Lower exp. limit
2.2
Fire Potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.

Stability and Reactivity

Disposal Code
6
Incompatibilities
Bases - oxidizing agents - reducing agents.
Stability
Has not been fully evaluated.
Decomposition
Carbon monoxide, oxides of sulfur, carbon dioxide.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
2922
Hazard Class
8
Packing Group
I; II; III
HS Code
2930 90 70
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