Name | 1-butene |
Synonyms | 1-C4H8 1-BUTENE 1-butene Butene-1 But-1-ene -Butylene cis-butene alpha-Butene trans-butene .beta.-Butene Polybut-1-ene .alpha.-Butene alpha-Butylene 1-butene, homopolymer |
CAS | 106-98-9 |
EINECS | 203-449-2 |
InChI | InChI=1/C4H8/c1-3-4-2/h1-4H2 |
InChIKey | VXNZUUAINFGPBY-UHFFFAOYSA-N |
Molecular Formula | C4H8 |
Molar Mass | 56.11 |
Density | 0.5951 |
Melting Point | −185°C(lit.) |
Boling Point | −6.3°C(lit.) |
Flash Point | 80 |
Water Solubility | 222 mg/kg at 25 °C (shake flask-GC, McAuliffe, 1966) |
Solubility | Soluble in alcohol, benzene, and ether (Weast, 1986) |
Vapor Presure | 1939 mm Hg ( 21.1 °C) |
Vapor Density | 1.93 (vs air) |
Appearance | gas |
Color | Colorless to Almost colorless |
Odor | Slightly aromatic |
Merck | 14,1519 |
BRN | 1098262 |
pKa | >14 (Schwarzenbach et al., 1993) |
Storage Condition | -20°C Freezer |
Stability | Volatile |
Explosive Limit | 9.3% |
Refractive Index | 1.3962 |
Physical and Chemical Properties | Boiling point -6.25 ℃ freezing point -185.35 ℃ relative density 0.5951 refractive index 1.3962 flash point -80 ℃ solubility insoluble in water, soluble in ethanol, ether, benzene-soluble. |
Use | Mainly used for dehydrogenation to butadiene, also can be synthesized by water n-butanol |
Risk Codes | 12 - Extremely Flammable |
Safety Description | S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S33 - Take precautionary measures against static discharges. |
UN IDs | UN 1012 2.1 |
WGK Germany | - |
FLUKA BRAND F CODES | 4.5-31 |
Hazard Note | Extremely Flammable |
Hazard Class | 2.1 |
Packing Group | II |
is a colorless, flammable gas at room temperature and atmospheric pressure. 1-Butene is soluble in ethanol and ether, insoluble in water. Easy to liquefy. In a low-pressure cylinder, it is shipped as liquefied petroleum gas at its own vapor pressure of 162kPa.
Industrial 1-butene (content 97%) was used as raw material, dried through silica gel, and then sent to a low-temperature rectification column. The Feed gas is condensed and liquefied by liquid nitrogen refrigerant in the distillation kettle, and then subjected to fractional distillation. It can be purified by batch distillation.
used as standard gas and preparation of special standard mixture.
1-butene acts as an anesthetic at high concentrations. Its toxicity is about 4.5 times that of ethylene, skin contact liquid 1 butene will produce frostbite. After inhalation can appear shortness of breath, slow, muscle disorders, misjudgment, fatigue, Nausea, Vomit and other symptoms. The staff should be protected and the working environment should be well ventilated. Flammable, the cylinder should be stored in a well-ventilated place, away from the heat source and fire, not with oxygen, chlorine, strong oxidant or combustible stored together.