Methyl mercaptanCH4S
CAS-No.: | 74-93-1 |
---|---|
UN-No.: | 1064 |
EC-No.: | 200-822-1 |
Hazard identification number: | 263 |
Hazard signs
*Source: GESTIS Substance Database, https://gestis-database.dguv.de
Occupational exposure limit
ACGIH (US)
- TWA (ppm) 0.5
- TWA (mg/m3) 0.98
NIOSH (REL) (US)
- STEL (ppm) C 0.5
- STEL (mg/m3) C 1
NIOSH (US)
- IDLH (ppm) 150
OSHA (PEL) (US)
- STEL (ppm) C 10
- STEL (mg/m3) C 20
- H: 220
Extremely flammable gas.
- H: 280
Contains gas under pressure; may explode if heated
- H: 331
Toxic if inhaled
- H: 410
Very toxic to aquatic life with long lasting effects
- P: 201
Obtain special instructions before use
- P: 210
Keep away from heat/
sparks/open flames/hot
surfaces. — No smoking.
- P: 273
Avoid release to the environment.
- P: 377
Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
- P: 391
Collect spillage
- P: 403 + 233
Store in a well-ventilated
place. Keep container
tightly closed.
- P: 410 + 403
Protect from sunlight. Store in a well-ventilated place.
No statement for this group.
No GHS Classification available at the moment.
*Source: GESTIS Substance Database, https://gestis-database.dguv.de
Melting point:
-123 °C Boiling Point:
6 °C Density (at 20 °C, if not notified otherwise):
0,8665 g/cm3Ionization:
9.439 ± 0.005 eVFlash Point:
-18 °C Ignition Temperature:
360 °C Vapour Pressure (at 20 °C, if not notified otherwise):
1700 hPaLower Explosive Limit:
4.1 Vol.-%Upper Explosive Limit:
21 Vol.-%
*Source: GESTIS Substance Database, https://gestis-database.dguv.de
Also known as:
- H3CSH
- Mercaptomethane
- Methanethiol
- Methyl sulfhydrate
- Methyl thioalcohol
- Thiomethanol
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