| Chemical |
Acetylene |
| CAS-number : |
74-86-2 |
| |
| Synonyms : |
| asetyleeni |
| Ethine |
| ethyne |
| |
| Sumformula of the chemical : |
| C2H2 |
| EINECS-number : |
| 2008169 |
| |
| Uses : |
Manmade sources:
Diesel engine: 14.1 % of emitted hydrocarbons
Reciprocating gasoline engine: 3.3 % of emitted hydrocarbons
Rotary gasoline engine: 3.3 % of emitted hydrocarbons
(Verschueren 1983).
|
| |
| State and appearance : |
Colourless gas.
|
| |
| Odor : |
Odour threshold: detection: 240 mg/m3
1300 - 2750 mg/m3 (Verschueren 1983) |
| |
| Molecular weight : |
26.04 |
| |
| Spesicif gravity (water=1) : |
| 0.62 |
liquified |
| |
| Vapor density (air=1) : |
| 0.91 |
|
| |
| Conversion factor, 1 ppm in air=_mg/m3 : |
| 1.08 |
mg/m3 |
| |
| Conversion factor, 1 mg/m3 in air=_ppm : |
| 0.92 |
ppm |
| |
| Melting point, °C : |
| -81.8 |
|
| |
| Sublimation point, °C : |
| -84 |
|
| |
| Henry's law constant, Pa x m3/mol : |
| 2557 |
calc. Yaws et al. 1991 |
| |
| Other reactions in atmosphere : |
Atmospheric reactions: reactivity; NO ox.: ranking: 0.1
(Verschueren 1983).
|
| |
| Effects on plants : |
Seed plants: sweet pea: declination in seedling: 250 ppm, 3
days - tomato: epinasty in petiole: 50 ppm, 2 days (Verschueren
1983).
|
| |
| LC50 values to fishes, mg/l : |
| 200 |
srv, act, 33 hr, Salmo trutta, Meinck et |
| |
al. 1970 |
References |
| 1468 | Verschueren, K. 1983.
Handbook of environmental data of
organic chemicals.
Van Nostrand Reinhold Co.
Inc., New York.
1310 s. |
| 3030 | Yaws, C., Yang, H-C. & Pan, X. 1991.
Henry's law constants for
362 organic compounds in water.
Chemical Engineering.
November.
p 179 - 185. |
