| Product Identification | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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 | Back to Contents | 【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. |
| Stability and Reactivity | Back to Contents | 【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. |
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