| Product Identification | Back to Contents | 【Product Name】
2-Hydroxy-1-ethanethiol | 【Synonyms】
2-Hydroxy-1-ethanethiol
2-Mercaptoethanol
2-Sulfanylethanol
Monothioethyleneglycol | 【CAS】
60-24-2 | 【Formula】
C2H6OS | 【Molecular Weight】
78.13 | 【EINECS】
200-464-6 | 【RTECS】
KL5600000 | 【RTECS Class】
Mutagen; Primary Irritant | 【Merck】
13,5894 | 【Beilstein/Gmelin】
773648 | 【Beilstein Reference】
4-01-00-02428 | 【EC Class】
toxic, corrosive, dangerous for the environment |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Colorless liquid with a faint characteristic odor. | 【Solubility in water】
Soluble | 【Melting Point】
-100 | 【Boiling Point】
157 | 【Vapor Pressure】
1.0 (25 C) | 【Density】
1.1317 g/cm3 (0 C) | 【pKa/pKb】
9.74 (pKa) | 【Partition Coefficient】
-.326 | 【Heat Of Vaporization】
45.9 kJ/mol | 【Usage】
Solvent for dyestuffs, intermediate for producing dyestuffs, pharmaceuticals, rubber chemicals, flotation agents, insecticides, plasticizers, water-soluble reducing agent, biochemical reagent, pvc stabilizers, agricultural chemicals, textile auxiliary. | 【Saturation Concentration】
81600 ppm (8.2%) at 20 C | 【Vapor Density】
2.7 | 【Odor threshold】
0.38 mg/m3 | 【Refractive Index】
1.4963 (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. Never give anything by mouth to an unconscious person. Get medical aid immediately. | 【Inhalation】
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. | 【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. Wash clothing before reuse. | 【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 heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. | 【Handling】
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Do not allow contact with water. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. |
| Hazards Identification | Back to Contents | 【Inhalation】
Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. May cause dyspnea (difficult breathing from shortness of breath). Exposure to high concentrations of mercaptans can produce unconsciousness with cyanosis, cold extremities and rapid pulse. Mercaptans may cause nausea and headache. | 【Skin】
May be fatal if absorbed through the skin. Causes irritation with burning pain, itching, and redness. | 【Eyes】
May cause severe eye irritation. May result in corneal injury. | 【Ingestion】
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause muscle paralysis, respiratory failure, and possible death. | 【Hazards】
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. May polymerize explosively when heated or involved in a fire. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. | 【EC Risk Phrase】
R 20/22 24 34 51/53 | 【EC Safety Phrase】
S 26 36/37/39 45 61 | 【UN (DOT)】
2966 |
| 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 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. | 【Exposure Effects】
Prolonged or repeated skin contact may cause defatting and dermatitis. Repeated or prolonged exposure may cause CNS stimulation. | 【Exposure limit(s)】
OEL-RUSSIA:STEL 1 mg/m3 | 【Poison Class】
3 |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
68 | 【Autoignition】
295 | 【Fire Fighting】
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Combustion generates toxic fumes. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Combustible Liquid. Extinguishing media: Do NOT get water inside containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Cool containers with flooding quantities of water until well after fire is out. | 【Upper exp. limit】
18 | 【Lower exp. limit】
2.3 | 【Fire Potential】
May burn but does not ignite readily. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Provide ventilation. |
| Stability and Reactivity | Back to Contents | 【Disposal Code】
6 | 【Stability】
Stable under normal temperatures and pressures. | 【Incompatibilities】
Strong oxidizers, calcium hypochlorite, metals, strong acids, caustics, aliphatic amines, isocyanates. | 【Decomposition】
Carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide. | 【Combustion Products】
Fire may produce irritating, corrosive and/or toxic gases. |
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