2-Methylbutane

Isopentane; C₅H₁₂ = 72.2 (78-78-4)

Content, minimum 99.5% of C₅H₁₂.

Very flammable colourless liquid.

, about 0.621; about 1.354; boiling point about 29°.

Water (2.5.12) Maximum 0.02%.

Residue on evaporation Maximum 0.0003%.

Absorbance (2.2.25) Maximum 0.30 at 210 nm, 0.07 at 220 nm, 0.01 at 240 nm and higher wavelengths, determined using water as compensation liquid.