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N-butane

N-butane

description
n-Butane (C4H10) is a colorless, flammable liquefied gas with a weak odor.

specification
purity,% 99.5 99.95 99.99
oxygen ≤ 10 ppm ≤ 10 ppm ≤ 5 ppm
Nitrogen
≤ 40 ppm ≤ 20 ppm
Ethane ≤ 100 ppm

Isobutane ≤ 0.3%

Propane ≤ 400 ppm

Neopentane ≤ 0.1%

Isopentane ≤ 0.1%

Other hydrocarbons
≤ 500 ppm ≤ 90 ppm
Moisture ≤ 5 ppm ≤ 3 ppm ≤ 3 ppm
sulfur ≤ 0.5 ppm ≤ 1 ppm ≤ 1 ppm

transport
DOT shipping name N-butane
DOT classification 2.1
DOT tag flammable gas
UN NO. UN 1011
CAS No. 106-97-8
CGA/JIS/BS341/DIN477 510/W22-14L/No.9/No.1
Transportation status Liquefied gas

description
Cylinder condition @ 21.1°C  liquid
Burning limit in the air 1.8–8.4% 
Auto-ignition temperature ( °C ) 405
Molecular weight ( g / mol ) 58.124
Specific gravity (air = 1) 2.007
Critical temperature ( °C ) 152.03
Critical pressure ( psig ) 536.01

application
- a raw material for the preparation of a standard gas for an environmental monitoring system; 
- as a propellant; 
- as a solvent;

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