Iso-Butane (I-C4H10)
Isobutane, also known as i-butane, 2-methylpropane or methylpropane, is a chemical compound with molecular formula HC(CH3)3. It is an isomer of butane. It is the simplest alkane with a tertiary carbon. Isobutane is used as a precursor molecule in the petrochemical industry, for example in the synthesis of isooctane. Isobutane is used as a refrigerant.
SEMA Gases is a manufacturer of span gases in disposable cylinder cans from the Netherlands, established from the want to create a label which is applicable for all brands of gas detection equipment. The products of SEMA Gases are used for calibration of portable gas detection instruments and calibration of fixed gas detection systems. SEMA Gases produces single gases (flammable gases, oxygen, toxic gases) and gas mixtures (2, 3, 4 or 5 gas mixtures) in various cylinder size up to 110 ltr.
Acetylene Calibration Gases
| 34L | 58L | 110L | Cert. tol. | Prod. tol. | Stability (months) |
|
|---|---|---|---|---|---|---|
| 0.75 % Iso-Butane // Air | Available | Available | Available | +/- 2% | +/- 5% | 60 |
| 0.9 % Iso-Butane // Air | Available | Available | Available | +/- 2% | +/- 5% | 60 |
| 7.5 % Iso-Butane // Nitrogen | Available | Available | Unavailable | +/- 2% | +/- 5% | 60 |
| 8 % Iso-Butane // Nitrogen | Available | Available | Available | +/- 2% | +/- 5% | 60 |
| 10 % Iso-Butane // Nitrogen | Available | Available | Available | +/- 2% | +/- 5% | 60 |
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