Isobutylene
Names
[ CAS No. ]:
115-11-7
[ Name ]:
Isobutylene
[Synonym ]:
EINECS 204-066-3
MFCD00008898
Propene,2-methyl
ISOBUTENE
1-PROPENE, 2-METHYL-
2-METHYLPROPENE
ISOBUTYLENE
1-Propene,2-methyl
Methylpropene
2-Methyl-1-propene
2-methylprop-1-ene
2-Methylpropylene
Chemical & Physical Properties
[ Density]:
0.5879
[ Boiling Point ]:
−6.9 °C(lit.)
[ Melting Point ]:
−140 °C
[ Molecular Formula ]:
C4H8
[ Molecular Weight ]:
56.10630
[ Flash Point ]:
-80 °C
[ Exact Mass ]:
56.06260
[ LogP ]:
1.58240
[ Vapour density ]:
2 (vs air)
[ Vapour Pressure ]:
3278 mm Hg ( 37.7 °C)
[ Index of Refraction ]:
1.3811
[ Stability ]:
Stable. Highly flammable - readily forms an explosive mixture with air. Incompatible with strong oxidizing agents.
[ Freezing Point ]:
-140.34℃
MSDS
Toxicological Information
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- UD0890000
- CHEMICAL NAME :
- 1-Propene, 2-methyl-
- CAS REGISTRY NUMBER :
- 115-11-7
- LAST UPDATED :
- 199712
- DATA ITEMS CITED :
- 8
- MOLECULAR FORMULA :
- C4-H8
- MOLECULAR WEIGHT :
- 56.12
- WISWESSER LINE NOTATION :
- 1Y1&U1
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- LC50 - Lethal concentration, 50 percent kill
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 620 gm/m3/4H
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- FATOAO Farmakologiya i Toksikologiya (Moscow). For English translation, see PHTXA6 and RPTOAN. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.2- 1939- Volume(issue)/page/year: 30,102,1967
- TYPE OF TEST :
- LC50 - Lethal concentration, 50 percent kill
- ROUTE OF EXPOSURE :
- Inhalation
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 415 gm/m3/2H
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- FATOAO Farmakologiya i Toksikologiya (Moscow). For English translation, see PHTXA6 and RPTOAN. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.2- 1939- Volume(issue)/page/year: 30,102,1967 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-RUSSIA:STEL 100 mg/m3 JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 81854 No. of Facilities: 432 (estimated) No. of Industries: 13 No. of Occupations: 22 No. of Employees: 5502 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 81854 No. of Facilities: 942 (estimated) No. of Industries: 17 No. of Occupations: 16 No. of Employees: 7002 (estimated) No. of Female Employees: 982 (estimated)
Safety Information
[ Hazard Codes ]:
F+:Highlyflammable;
[ Risk Phrases ]:
R12
[ Safety Phrases ]:
S9-S16-S33
[ RIDADR ]:
UN 1055 2.1
[ WGK Germany ]:
-
[ RTECS ]:
UD0890000
[ Hazard Class ]:
2.1
[ HS Code ]:
2901233000
Precursor & DownStream
Precursor
DownStream
Customs
[ HS Code ]: 2901233000
[ Summary ]:
2901233000 2-methylprop-1-ene。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。Lowest tariff:2.0%。General tariff:20.0%