METHYICROTONATE
trans-Methyl crotonate(E)
CAS: 623-43-8;18707-60-3
Molecular Formula: C5H8O2
METHYICROTONATE - Names and Identifiers
METHYICROTONATE - Physico-chemical Properties
| Molecular Formula | C5H8O2 |
| Molar Mass | 100.12 |
| Density | 0.944 g/mL at 25 °C (lit.) |
| Melting Point | -42°C |
| Boling Point | 118-120 °C (lit.) |
| Flash Point | 40°F |
| Water Solubility | IMMISCIBLE |
| Vapor Presure | 0.152mmHg at 25°C |
| Appearance | Liquid |
| Color | Clear colorless |
| Merck | 14,2597 |
| BRN | 1720292 |
| Storage Condition | Flammables area |
| Refractive Index | n20/D 1.423(lit.) |
| Physical and Chemical Properties | Colorless liquid. The boiling point is 121 °c, the relative density is 0,9444(20/4 °c), the refractive index is 1.4242, and the flash point is 4 °c. Soluble in alcohol and ether, insoluble in water. |
| Use | For organic synthesis and preparation of spices |
METHYICROTONATE - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S9 - Keep container in a well-ventilated place. S33 - Take precautionary measures against static discharges. |
| UN IDs | UN 3272 3/PG 2 |
| WGK Germany | 2 |
| RTECS | GQ5710000 |
| TSCA | Yes |
| HS Code | 29161980 |
| Hazard Class | 3 |
| Packing Group | II |
METHYICROTONATE - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | used as an intermediate and spice in organic synthesis. Used as solvent |
| production method | obtained by esterification of crotonic acid and methanol. The reaction solution made of 800g crotonic acid, 1L methanol, 130g sulfuric acid and 300ml carbon tetrachloride is heated in a water bath, and carbon tetrachloride is recovered after dehydration and esterification to obtain crude methyl crotonate. Then wash the unreacted crotonic acid in the crude product with water, wash it with 5% sodium carbonate, and refine it with reduced pressure distillation to obtain the finished product. |
| category | flammable liquid |
| toxicity classification | poisoning |
| acute toxicity | oral-mouse LD50: 1600 mg/kg |
| stimulation data | skin-rabbit 500 mg/24 hours moderate |
| flammability hazard characteristics | flammability in case of open flame, high temperature and oxidant; Combustion produces stimulating smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from oxidants and acids |
| fire extinguishing agent | dry powder, dry sand, carbon dioxide, foam |
Last Update：2024-04-09 20:52:54
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