Our website is made possible by displaying online advertisements to our visitors.
Please consider supporting us by disabling your ad blocker.
Dimethoxymethane
 | |
 | |
| Names | |
|---|---|
| Preferred IUPAC name
Dimethoxymethane | |
| Other names
Formal
Formaldehyde dimethyl ether | |
| Identifiers | |
3D model (JSmol)
|
|
| 1697025 | |
| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.003.378 |
| EC Number |
|
| 100776 | |
| MeSH | Dimethoxymethane |
PubChem CID
|
|
| RTECS number |
|
| UNII | |
| UN number | 1234 |
CompTox Dashboard (EPA)
|
|
| |
| |
| Properties | |
| C3H8O2 | |
| Molar mass | 76.095 g·mol−1 |
| Appearance | Colorless liquid[1] |
| Odor | Chloroform-like[1] |
| Density | 0.8593 g cm−3 (at 20 °C)[1] |
| Melting point | −105 °C (−157 °F; 168 K)[1][3] |
| Boiling point | 42 °C (108 °F; 315 K)[1][3] |
| 33% (20 °C)[2][clarification needed] | |
| Vapor pressure | 330 mmHg (20 °C)[2] |
| −47.3·10−6 cm3/mol | |
| Hazards | |
| GHS labelling: | |
 
| |
| Danger | |
| H225, H315, H319, H335 | |
| P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, P501 | |
| Flash point | −18 °C (0 °F; 255 K) |
| Explosive limits | 2.2–13.8%[2] |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
|
5708 mg/kg (rabbit, oral)[4] |
LC50 (median concentration)
|
18000 ppm (mouse, 7 hr) 15000 ppm (rat) 18354 ppm (mouse, 7 hr)[4] |
| NIOSH (US health exposure limits): | |
PEL (Permissible)
|
TWA 1000 ppm (3100 mg/m3)[2] |
REL (Recommended)
|
TWA 1000 ppm (3100 mg/m3)[2] |
IDLH (Immediate danger)
|
2200 ppm[2] |
| Related compounds | |
Related Ethers
|
Dimethoxyethane |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Dimethoxymethane, also called methylal, is a colorless flammable liquid with a low boiling point, low viscosity and excellent dissolving power. It has a chloroform-like odor and a pungent taste. It is the dimethyl acetal of formaldehyde. Dimethoxymethane is soluble in three parts water[clarification needed] and miscible with most common organic solvents.
- ^ a b c d e Merck Index, 11th Edition, 5936
- ^ a b c d e f NIOSH Pocket Guide to Chemical Hazards. "#0396". National Institute for Occupational Safety and Health (NIOSH).
- ^ a b International Chemical Safety Card 1152
- ^ a b "Methylal". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
Previous Page Next Page
