| Name | Nitrous acid methyl ester |
| Synonyms | Methyl nitrite Nitrous acid methyl Nitrous acid methyl ester |
| CAS | 624-91-9 |
| EINECS | 210-870-5 |
| Molecular Formula | CH3NO2 |
| Molar Mass | 61.04 |
| Density | 0.9910 |
| Melting Point | -16.99°C |
| Boling Point | -12°C |
| Refractive Index | 1.3418 (estimate) |
| Physical and Chemical Properties | EPA Chemical Information Methyl nitrite (624-91-9) |
| UN IDs | 2455 |
| Hazard Class | 2.2 |
| Downstream Products | 2-Chloro-5-methylpyridine 1-(2,5-Dimethoxyphenyl)-2-oximino-1-propanone 2-AMINO-1-(2,5-DIMETHOXYPHENYL)-1-PROPANONE 4-methyl-1H-benzotriazole |
| toxic substance data | 624-91-9(Hazardous Substances Data) |
| category | harmful gases |
| toxicity classification | Poisoning |
| acute toxicity | inhalation-rat LC50: 176 PPM/4 hours |
| explosive hazard characteristics | Explosive mixing with air |
| flammability hazard characteristics | flammable; decomposes toxic nitrous acid in case of water; decomposes toxic nitrogen oxide gas in case of heat; prevents scalding |
| storage and transportation characteristics | The warehouse is ventilated and dry at low temperature; it is stored separately from oxidants, combustibles, and ammonium salts |
| fire extinguishing agent | mist water, foam, carbon dioxide |