Methyl acetyleneC3H4
CAS-No.: | 74-99-7 |
|---|---|
UN-No.: | 3161 |
EC-No.: | 200-828-4 |
Hazard identification number: | 23 |
Hazard signs
*Source: GESTIS Substance Database, https://gestis-database.dguv.de
Occupational exposure limit
ACGIH (US)
- TWA (ppm) 1000 (EX)
- TWA (mg/m3) 1640 (EX)
NIOSH (REL) (US)
- TWA (ppm) 1000
- TWA (mg/m3) 1650
NIOSH (US)
- IDLH (ppm) 1700 [10% LEL]
OSHA (PEL) (US)
- TWA (ppm) 1000
- TWA (mg/m3) 1650
- H: 220
Extremely flammable gas
- H: 231
- H: 280
Contains gas under pressure; may explode if heated
- P: 202
Do not handle until all safety precautions have been read and understood.
- P: 210
Keep away from heat/
sparks/open flames/hot
surfaces. — No smoking.
- P: 377
Leaking gas fire: Do not extinguish, unless leak can be stopped safely
- P: 381
Eliminate all ignition sources if safe to do so.
- P: 403
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:
-102.7 °C Boiling Point:
-23.2 °C Density (at 20 °C, if not notified otherwise):
0,0018301 (0°C) g/cm3Ionization:
10.36 ± 0.01 eVIgnition Temperature:
340 °C Vapour Pressure (at 20 °C, if not notified otherwise):
5123 hPaLower Explosive Limit:
1.8 Vol.-%Upper Explosive Limit:
16.8 Vol.-%
*Source: GESTIS Substance Database, https://gestis-database.dguv.de
Also known as:
- 1-Propyne
- C3H4
- Methyl acetylene
- Methylacetylen
- prop-1-yne
- Propin
- Propine
- Propyne
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