- Odour : Nil at low concentrations; strong musty or sickly sweet at high concentrations
- Chemical formula : CH3Br
- Boiling point : 3.6°C (38.5°F)
- Freezing point : -93°C
- Molecular weight : 94.95
- Specific gravity gas (air=1) : 3.27 at 0°C
- Liquid (water at 4°C=1) : 1.732 at 0°C
- Latent heat of vaporization : 61.52 cal/g
- Flammability limits in air : Nonflammable (see next page)
- Solubility in water : 1.34 g/100 ml at 25°C
- Pertinent chemical properties : Powerful solvent of organic materials, especially natural rubber. When pure, noncorrosive to metals. Liquid reacts with aluminium (see text)
- Method of evolution as fumigant : From steel cylinders under natural or added pressure. Also dispensed from 1 lb cans or 20 ml glass ampoules
- Commercial purity : 99.4%