Trimethyl borate
Pharmaceutical Materials 2025-03-02
CAS Number: 593-90-8
Molecular Formula: C3H9BO2
Molecular Weight: 87.91 g/mol
Appearance: Colorless transparent liquid
Density: 0.8±0.1 g/cm³
Usage: Used as a raw material for organic synthesis, a plasticizer, and a flame retardant.
| Attribute | Description |
|---|---|
| Chemical Name | Trimethyl borate |
| Synonyms | Boric acid trimethyl ester, Trimethylborane oxide, (CH3)3B(OCH3) |
| CAS Number | 593-86-8 |
| Formula | C3H9BO2 |
| Molecular Weight | 87.92 g/mol |
| Appearance | Colorless to light yellow transparent liquid |
| Odor | Characteristic |
| Density | 0.854 g/mL at 25°C |
| Melting Point | -82°C |
| Boiling Point | 84-86°C |
| Flash Point | -15°C |
| Refractive Index | 1.363-1.365 |
| Solubility | Miscible with most organic solvents; slightly soluble in water |
| Chemical Properties | Reactive with water, releasing methanol and boric acid; flammable |
| Applications | Used as a fuel additive; in the synthesis of other boron compounds; as a solvent and catalyst in organic reactions; also used in the production of flame retardants and in semiconductor manufacturing |
| Hazard Information | Flammable; irritant to eyes, skin, and respiratory system; may cause drowsiness or dizziness; keep away from heat, sparks, and open flames; store in a cool, dry place |
| Handling Precautions | Wear appropriate personal protective equipment; avoid contact with skin, eyes, and clothing; use in a well-ventilated area; follow safety instructions for handling flammable liquids and chemicals |
| Safety Symbols | F (Flammable), Xi (Irritant) |
| Risk Phrases | R10: Flammable; R36/37/38: Irritating to eyes, respiratory system, and skin |
| Safety Phrases | S16: Keep away from sources of ignition – No smoking; S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice; S36/37/39: Wear suitable protective clothing, gloves, and eye/face protection |
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