| Chemical |
n-butane |
| CAS-number : |
106-97-8 |
| |
| Sumformula of the chemical : |
|
C4H10 |
| EINECS-number : |
| 2034487 |
| |
| State and appearance : |
Colourless gas.
|
| |
| Odor : |
Threshold odour concentration:
12100 mg/m3 = 4960 ppm
not detectable: < 5000 ppm (Patty 1967)
recognition: 6160 mg/m3 (Verschueren 1983)
3000 mg/m3 (Laffort & Dravnieks 1973)
5.5 ppm (Verschueren 1983).
|
| |
| Molecular weight : |
58.14 |
| |
| Spesicif gravity (water=1) : |
| 0.6 |
liquified |
| |
| Vapor density (air=1) : |
| 2.01 |
|
| |
| Conversion factor, 1 ppm in air=_mg/m3 : |
| 2.42 |
mg/m3 |
| |
| Conversion factor, 1 mg/m3 in air=_ppm : |
| 0.41 |
ppm |
| |
| Vapor pressure, mmHg : |
| 1823 |
at 25 °C |
| |
| Water solubility, mg/l : |
| 61 |
at 20 °C |
| 30 |
at 15 °C |
| 21 |
at 38 °C |
| |
| Melting point, °C : |
| -135 |
-135/-138 °C |
| -138 |
|
| |
| Boiling point, °C : |
| -1 |
|
| |
| Photochemical degradation in air : |
Estimated lifetime under photochemical smog conditions in S.E.
England: 15 hr (Verschueren 1983, Stuhl 1973).
|
| |
| Total degradation in water : |
Incubation with natural flora in the groundwater - in presence of
the other components of high-octane gasoline (0.100 ml/l):
biodegradation: 0 % after 192 hr at 13 °C (initial conc.
0.00063 ml/l (Jamison et al. 1976).
|
| |
| Health effects : |
Man: drowsiness, no other effects; 10000 ppm, 10 min (Patty
1967).
|
References |
| 1809 | Altshuller, A.P. & Bufalini, J.J. 1971.
Photochemical aspects
of air pollution; A Review.
Environm.
Sci. & Techn. 5(1). |
| 1873 | Jamison.
V.W., Raymond, R.L. & Hudson, J.O. 1976.
Biodegradation of high-octane gasoline.
In: J.M.
Sharpley and
A.M.
Kaplan (eds.).
Proceedings of the Third International
Biodegradation Symposium.
Applied Science Publishers, pp. 187 -
196. |
| 1871 | Laffort, P. & Dravnieks, A. 1973.
An approach to a
physico-chemical model of olfactory stimulation in vertebrates by
single compounds.
J.
Theor.
Biol. 38: 335 - 345. |
| 1644 | Patty, F.A. 1967.
Industrial hygiene and toxicology.
Vol 2.
Interscience Publishers. |
| 1872 | Stuhl.
F. 1973.
Rate constant for the reaction of OH with
n-C4H10.
Z.
Naturforsch 28a: 1383 - 1384. |
| 1468 | Verschueren, K. 1983.
Handbook of environmental data of
organic chemicals.
Van Nostrand Reinhold Co.
Inc., New York.
1310 s. |
