Dimethylene methane
Allene
CAS: 463-49-0
Molecular Formula: C3H4
Dimethylene methane - Names and Identifiers
| Name | Allene |
| Synonyms | Allene MAPPGAS allenegas PROPADIENE propardiene 1,2-Propanediene Dimethylene methane ALLENE, 170 G (IN LECTURE BOTTLE) |
| CAS | 463-49-0 |
| EINECS | 207-335-3 |
Dimethylene methane - Physico-chemical Properties
| Molecular Formula | C3H4 |
| Molar Mass | 40.06 |
| Density | 0,647 g/cm3 |
| Melting Point | −136°C(lit.) |
| Boling Point | -34 °C |
| Vapor Presure | 6795 mm Hg ( 21 °C) |
| Vapor Density | 1.42 (20 °C, vs air) |
| Appearance | Gasunderpressure:liquefiedgas |
| BRN | 1730774 |
| Storage Condition | 2-8°C |
| Explosive Limit | 13% |
| Refractive Index | 1.4169 |
| Physical and Chemical Properties | Storage Conditions 2-8°C explosive limit 13% |
| Use | With 1,2,3,-trichloropropane as raw material, 2,3,-dichloropropene was synthesized first, and then after reaction, 2,3-dichloropropene was dechlorinated in ethanol solution to produce propadiene. The reaction product is frozen in a cold trap to remove high boiling impurities, and then obtained by drying and dehydration. |
Dimethylene methane - Risk and Safety
| Risk Codes | 12 - Extremely Flammable |
| Safety Description | S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S33 - Take precautionary measures against static discharges. |
| UN IDs | UN 2200 2.1 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 17 |
| TSCA | T |
| Hazard Note | Flammable |
| Hazard Class | 2.1 |
Dimethylene methane - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| production method | 2,3,-dichloropropene was first synthesized from 1,2,3,-trichloropropane, after further reaction, 2, 3-dichloropropene was dechlorinated in an ethanol solution to give propadiene. The reaction product is frozen in a cold trap to remove high boiling impurities, and then obtained by drying and dehydration. |
| DOT Classification | 2.1 (Flammable gas) |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
