- 2-Butyl mercaptan
- sec-Butyl thioalcohol
- sec-Butyl thiol
Colorless liquid, obnoxious, heavy skunk-like odor.
Odorant for natural gas.
Registry Numbers and Inventories.
S 9 16
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
74 (25 C)
Vapor density (air=1)
0.8290 g/cm3 (20 C)
Solubility in water
0.463 cp (20 C)
23.1 g/s2 (30 C)
1.4338 (20 C)
Partition coefficient, pKow
Heat of fusion
Heat of vaporization
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
Make no contact with the spilled material. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.
Upper exp. limit, %
Lower exp. limit, %
Use of water spray when fighting fire may be inefficient. Small Fires: Dry chemical, carbon dioxide, water spray or regular foam. Large Fires: Water spray, fog or regular foam. Do not use straight streams.
In general, mercaptans are flammable substances.
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Fire will produce irritating, corrosive and/or toxic gases.
Narcosis and paralysis may be caused with concentrated vapors. Drowsiness, weakness, and mild depression may be seen at exposures of 50 to 500 ppm for one hour.
Nausea and vomiting have been reported in humans due to the refractory odor.
Pulmonary edema was seen in animals near lethal concentrations.
May irritate or burn. May cause toxic effects if absorbed through the skin.
Seek medical assistance.
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.
2930 90 70