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Isobutane - ( I-C4H10 )
Isobutane is a colourless, flammable, liquified gas with a slight odour.
| Specifications | |||
| 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 |
| Water | ≤ 10 ppm | ≤ 6 ppm | ≤ 2 ppm |
| Sulfur | ≤ 1 ppm | ≤ 1 ppm | ≤ 1 ppm |
| Ship | |||
| DOT Shipping Name | Isobutane | ||
| DOT Classification | 2.1 | ||
| DOT Label | Flammable Gas | ||
| UN Number | UN 1969 | ||
| CAS No. | 75-28-5 | ||
| CGA/JIS /BS341/DIN477 | 510/W22-14L/NO.9/NO.1 | ||
| Shipped as | Liquefied Gas | ||
| Technical Information | |||
| Cylinder State @ 21.1°C | Liquid | ||
| Flammable Limits In Air | 1.8-8.4% | ||
| Auto Ignition Temperature (°C ) | 460 | ||
| Molecular Weight (g/mol) | 58.124 | ||
| Specific gravity (air =1) | 2.007 | ||
| Critical Temperature ( °C ) | 134.98 | ||
| Critical Pressure ( psig ) | 514.4 | ||
| Applications | |||
|
· As a propellant . · As a solvent . · As a refrigerant . · As reagent gas in chemical ionization mass spectrometry . · In the manufacturing of calibration mixtures. | |||