Butyric anhydride
Pharmaceutical Materials 2025-03-02
CAS Number: 109-75-1
Molecular Formula: C4H5N
Molecular Weight: 67.089
Appearance: Colorless liquid
Melting Point: -87°C
Boiling Point: 116-121°C
Density: 0.834 g/mL at 25°C
Usage: Used as an organic synthesis intermediate and a polymerization crosslinking agent.
| Attribute | Details |
|---|---|
| Chemical Name | Butyric anhydride |
| Synonyms | Butyryl oxide, Butyranhydrid, n-Butanoic anhydride, Butanoic acid, 1.1′-anhydride, Butyric ANHYDRIDE, Butanoic anhydride (general use), n-Butyric anhydride |
| CAS Number | 106-31-0 |
| Formula | C8H14O3 |
| Molecular Weight | 158.195 g/mol |
| Appearance | Colorless to pale yellow transparent liquid |
| Physical Properties | Density: 0.967 g/cm³; Melting Point: -75 °C; Boiling Point: 199.5 °C; Flash Point: 54 °C (CC); Refractive Index: 1.413 |
| Solubility | Soluble in ether; Soluble in water (decomposes to form butyric acid) |
| Chemical Properties | Prepared by dehydration of butyric acid; Reacts with water to form butyric acid; Can be used as a raw material for preparing butyrate esters and fragrances |
| Applications | Used in the preparation of cellulose butyrate; Used as a raw material for butyrate esters and fragrances; Used as a raw material for the pharmaceutical iodoipanoic acid, which is a gallbladder contrast agent; Also used in food additives, textile auxiliaries, varnishes, perfumes, disinfectants, and as a fumigant to drive bees from hives |
| Safety Hazards | Low toxicity; Corrosive; May cause skin and eye irritation; May be harmful if swallowed or inhaled; Risk of fire and explosion if exposed to heat, sparks, or incompatible materials |
| Precautions | Keep away from heat, sparks, and incompatible materials; Store in a cool, dry place in tightly sealed containers; Wear appropriate protective clothing, gloves, and eye/face protection during handling; Avoid contact with skin, eyes, and mouth |
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