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Conditions | Yield |
---|---|
With 5%-palladium/activated carbon; hydrogen In hexane; water at 100℃; under 20686.5 Torr; for 24h; Temperature; Pressure; Solvent; Reagent/catalyst; Sealed tube; | 99% |
Conditions | Yield |
---|---|
Photolysis; | |
With hydrogen; platinum | |
With Pt/γ-Al2O3; hydrogen at 160℃; Temperature; Gas phase; | |
With hydrogen at 100℃; under 750.075 Torr; for 3h; |
Conditions | Yield |
---|---|
With 0.3 wt. % palladium on alumina; hydrogen at 50℃; under 760.051 Torr; Fixed-bed flow reactor; | |
With hydrogen; calcium oxide at 130℃; under 760.051 Torr; Reagent/catalyst; Temperature; | |
With hydrogen In n-heptane at 17℃; under 7500.75 Torr; Autoclave; |
meso-erythritol
n-butane
Conditions | Yield |
---|---|
With tris(triphenylphosphine)ruthenium(II) chloride; hydrogen bromide; hydrogen; tetrabutyl phosphonium bromide In dodecane at 200℃; under 30003 Torr; for 4h; | 32% |
With hydrogen In water at 119.84℃; under 60006 Torr; for 144h; Autoclave; |
Conditions | Yield |
---|---|
With ruthenium (III) bromide; hydrogen bromide; hydrogen; tetra-n-butylphosphonium chloride In dodecane at 200℃; under 30003 Torr; for 4h; | A 51% B 8% |
1-butylene
carbon monoxide
A
methane
B
propane
C
Isobutane
D
n-butane
Conditions | Yield |
---|---|
With hydrogen; dodecacarbonyltetrairidium In various solvent(s) at 175℃; under 760 Torr; Further byproducts given; | A 0.5% B 16% C 59% D 11% |
propene
carbon monoxide
A
methane
B
propane
C
Isobutane
D
n-butane
Conditions | Yield |
---|---|
With hydrogen; dodecacarbonyltetrairidium In various solvent(s) at 175℃; under 760 Torr; Further byproducts given; | A 1% B 17% C 56% D 11% |
Conditions | Yield |
---|---|
With Pt/γ-Al2O3; hydrogen at 100℃; Temperature; Gas phase; | |
With hydrogen at 60℃; under 750.075 Torr; for 3h; | |
With platinum on silica gel; hydrogen at 400℃; under 760.051 Torr; | A 19 %Chromat. B 11 %Chromat. |
Conditions | Yield |
---|---|
With ethene; mercury In benzene-d6; water at -196 - 60℃; under 3040.2 Torr; Inert atmosphere; Glovebox; Sealed tube; Schlenk technique; | A 38% B 24% C 20% D 15% |
Conditions | Yield |
---|---|
With tertiary butyl chloride; tributylhexylphosphonium bromohexachloroaluminate at 95℃; under 8533.17 Torr; for 4.6h; Time; Autoclave; Inert atmosphere; | |
With tertiary butyl chloride; tributylhexylphosphonium bromohexachloroaluminate at 95℃; under 8533.17 Torr; for 4.6h; Time; Autoclave; Inert atmosphere; | |
With tertiary butyl chloride; tributylhexylphosphonium bromohexachloroaluminate at 95℃; under 8533.17 Torr; for 4.6h; Time; Autoclave; Inert atmosphere; |
Butane (CAS NO.106-97-8) is reported in EPA TSCA Inventory.
OSHA PEL: TWA 800 ppm
ACGIH TLV: TWA 800 ppm
DFG MAK: 1000 ppm (2400 mg/m3)
DOT Classification: 2.1; Label: Flammable Gas
n-Butane, also known butane, is a highly flammable, colorless, easily liquefied gas with a faint petroleum-like odor. It is an alkane with four carbon atoms. Butane refers two structural isomers of n-butane and isobutane. It is insoluble in water, soluble in alcohol, ether, chloroform and other hydrocarbons. n-Butane is used primarily as gasoline blending components and less so as liquefied fuel and in the manufacture of chemicals.
Preparation: Oil field gas, wet natural gas and cracked gas all contain n-butane. So it can be obtained by separation.
1. Separation from oil field gas and wet natural gas: The propane and butane liquefied petroleum gas can be seperated by being pressurized and condensation. After distillation, butane is isolated.
2. Separation from cracked gas: The gas which is obtained from refinery by vacuum distillation at room temperature goes through the following reaction steps: reforming; catalytic cracking; coking; thermal cracking; hydrocracking. The obtained liquid gas can contain a large number of C4 fraction. Then, after reforming, hydrocracking and vacuum distillation, the C4 fraction is mainly butane (n-butane and isobutane). The by-product C4 fraction from ethylene unit also contains butane. After a series of treatment, n-butane (above 90%) can be obtained.
3. Use industrial cymogene (C4H10 80% ~ 90%) as raw material and molecular sieve as adsorbent for adsorption purification. The purity of 98% butane can be obtained. Use rectification to remove light components, the product purity can reach 99.99%.
Uses: n-Butane gas is sold bottled as a fuel for cooking and camping. When blended with propane as liquefied petroleum gas, it is largely used for heating homes, cooking and industrial heating. Pure butane gas is used in standard gas, calibration gas, aerosol spray regent, temperature and pressure gauges and ionizing particle counter. n-Butane is also used as fuel for cigarette lighters and portable stoves and as raw material for synthetic rubber and high octane liquid fluids. In addition, it is mainly used as raw material in organic synthesis. For example: after dehydrogenation, butylene and butadiene can be obtained; after isomerization iso-butane can be obtained; after catalytic oxidation, Maleic anhydride, acetic acid, acetaldehyde can be obtained; after halogenate, halogenated butane can be obtained; after nitration, nitrobutane can be obtained.
Safty: n-Butane is a kind of extremely flammable chemical. Therefore, you had better take the following instructions: Keep container in a well-ventilated place; Keep away from sources of ignition - No smoking. Inhalation of n-butane can cause asphyxia, euphoria, drowsiness, cardiac arrhythmia, narcosis, and frostbite, which can result in death from asphyxiation and ventricular fibrillation.
Structure Descriptors:
1. Smiles:C(CC)C
2. InChI:InChI=1/C4H10/c1-3-4-2/h3-4H2,1-2H3
Toxicity:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
mouse | LC50 | inhalation | 680gm/m3/2H (680000mg/m3) | Farmakologiya i Toksikologiya Vol. 30, Pg. 102, 1967. | |
rat | LC50 | inhalation | 658gm/m3/4H (658000mg/m3) | Farmakologiya i Toksikologiya Vol. 30, Pg. 102, 1967. |