trans-Methyl crotonate
Pharmaceutical Materials 2025-03-02
CAS Number: 623-43-8
Molecular Formula: C5H8O2
Molecular Weight: 100.12
Appearance: Colorless liquid
Melting Point: -42°C
Boiling Point: 118-120°C
Flash Point: 4°C
Usage: Widely used in the synthesis of pharmaceuticals, fragrances, and flavors.
| Attribute | Details |
|---|---|
| Chemical Name | trans-Methyl crotonate |
| Synonyms | Methyl crotonate, (Crotonic acid methyl ester), 2-Butenoic acid methyl ester, Methyl but-2-enoate, methyl (2E)-but-2-enoate, (E)-2-Butenoic acid methyl ester |
| CAS Number | 623-43-8 |
| EINECS Number | 210-793-7 |
| Molecular Formula | C5H8O2 |
| Molecular Weight | 100.12 |
| Physical Appearance | Colorless liquid |
| Density | 0.9±0.1 g/cm³ |
| Boiling Point | 121.0±0.0 ℃ at 760 mmHg |
| Flash Point | 4.4±0.0 ℃ |
| Vapor Pressure | 14.9±0.2 mmHg at 25℃ |
| Refractive Index | 1.4242 (at 20℃) |
| Solubility | Miscible with ethanol and ether; insoluble in water |
| Usage | Used as an intermediate in organic synthesis and in the formulation of fragrances |
| Safety Precautions | Store in a sealed container in a cool, dry place. Keep away from oxidants. It is highly flammable and can cause irritation to eyes, respiratory system, and skin. |
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