Specification
Purity,% 99.5 99.95 99.99
Oxygen ≤ 100 ppm ≤ 5 ppm ≤ 5 ppm
Nitrogen ≤ 400 ppm ≤ 20 ppm ≤ 20 ppm
Other hydrocarbons ≤ 5000 ppm ≤ 500 ppm ≤ 90 ppm
Moisture ≤ 10 ppm ≤ 6 ppm ≤ 2 ppm
Sulfur ≤ 1 ppm ≤ 1 ppm ≤ 1 ppm
transportation
DOT shipping name isobutane
DOT classification 2.1
DOT label combustible gas
UN NO. UN 1969
CAS No. 75-28-5
CGA/JIS/BS341/DIN477 510/W22-14L/NO.9/NO.1
Transportation status Liquefied gas
Technical Information
Cylinder condition @ 21.1°C liquid
Combustion limit in air 1.8-8.4%
Natural temperature (°C) 460
Molecular weight (g/mol) 58.124
Specific gravity (air =1) 2.007
Critical temperature (°C) 134.98
Critical temperature (psig) 514.4
Application
1. As a propellant.
2. As a solvent.
3. As a refrigerant.
4. Used as reagent gas for chemical ionization mass spectrometry.
5. As a raw material for preparing standard gas.