BUTYRYL OXIDE
n-Butyric anhydride
CAS: 106-31-0
Molecular Formula: C8H14O3
BUTYRYL OXIDE - Names and Identifiers
| Name | n-Butyric anhydride |
| Synonyms | BUTYRYL OXIDE AKOS BBS-00004317 BUTYRIC ANHYDRIDE Butyric anhydride butanoic anhydride BUTANOIC ANHYDRIDE n-Butyric anhydride Butanoicacidanhydride Butanoicacid,anhydride anhydridkyselinymaselne Anhydrid kyseliny maselne |
| CAS | 106-31-0 |
| EINECS | 203-383-4 |
| InChI | InChI=1/C8H14O3/c1-3-5-7(9)11-8(10)6-4-2/h3-6H2,1-2H3 |
| InChIKey | YHASWHZGWUONAO-UHFFFAOYSA-N |
BUTYRYL OXIDE - Physico-chemical Properties
| Molecular Formula | C8H14O3 |
| Molar Mass | 158.2 |
| Density | 0.967 g/mL at 25 °C (lit.) |
| Melting Point | -75--66 °C (lit.) |
| Boling Point | 198-199 °C (lit.) |
| Flash Point | 190°F |
| Water Solubility | Decomposes |
| Solubility | alcohol: soluble (with decomposition)(lit.) |
| Vapor Presure | 10 mm Hg ( 79.5 °C) |
| Vapor Density | 5.45 (vs air) |
| Appearance | Liquid |
| Color | Clear colorless to light yellow |
| Merck | 14,1594 |
| BRN | 1099474 |
| Storage Condition | Store below +30°C. |
| Sensitive | Moisture Sensitive |
| Explosive Limit | 1.1%, 104°F |
| Refractive Index | n20/D 1.413(lit.) |
| Physical and Chemical Properties | character: colorless transparent flammable liquid. |
| Use | For the preparation of butyrate, spices and cellulose butyrate, etc., the pharmaceutical industry used as raw materials for the preparation of gallbladder contrast agent |
BUTYRYL OXIDE - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R14 - Reacts violently with water R34 - Causes burns |
| Safety Description | 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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2739 8/PG 3 |
| WGK Germany | 1 |
| RTECS | ET7090000 |
| FLUKA BRAND F CODES | 13 |
| TSCA | Yes |
| HS Code | 29159000 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 8790 mg/kg LD50 dermal Rabbit 6400 mg/kg |
BUTYRYL OXIDE - Upstream Downstream Industry
| Raw Materials | Acetic anhydride n-Butyric acid |
| Downstream Products | Cellulose acetate butyrate |
BUTYRYL OXIDE - Nature
Open Data Verified Data
colorless transparent flammable liquid, low toxicity. Melting Point -75 °c. Boiling point 199.4~201.4 ℃(101. 3kPa). Relative density o.9668. Refractive index 4070. Vapor pressure 39.4 (20 degrees C). Flash point 86.1 °c. Soluble in water and decomposition of butyric acid, soluble in ether.
Last Update：2025-06-10 22:55:16
BUTYRYL OXIDE - Preparation Method
Open Data Verified Data
butyric acid and acetic anhydride in the presence of catalyst heating reaction to get butyric anhydride, acetic acid by-product, and then separated, refined to get the finished product.
Last Update：2022-01-01 10:32:07
BUTYRYL OXIDE - Application
Open Data Verified Data
is a raw material for the preparation of butyrate, perfume and cellulose butyrate. It is used as a raw material for gallbladder contrast agent iodine pantothenic acid in medicine.
Last Update：2025-08-19 16:24:40
BUTYRYL OXIDE - Safety
Open Data Verified Data
This product has low toxicity. It is decomposed into butyric acid in water and alcohol. Because the use of acetic anhydride in the production process as raw materials, it should be in accordance with the requirements of acetic anhydride anti-virus and protection. See acetic anhydride.
The use of aluminum barrels or aluminum tank packaging, bottled net weight lokg, 200kg. Store in a cool, dry and ventilated place. Isolation with acids, alkalis and corrosive compounds. Fire, waterproof, sun protection. It shall be transported according to the regulations for general chemical products.
Last Update：2025-06-10 22:55:16
BUTYRYL OXIDE - 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 to prepare butyrate, perfume and cellulose butyrate, etc., used as raw material for preparing gallbladder contrast agent in pharmaceutical industry raw material for preparing cellulose butyrate, butyrate and perfume. As a raw material for gallbladder contrast agent iodine pantothenic acid in medicine. |
| Production method | Butyl anhydride can be obtained by co-heating butyrate chloride and sodium butyrate, or by the exchange method of butyric acid and acetic anhydride. Butyric acid and acetic anhydride are heated in the presence of a catalyst to react to obtain Ding liver, by-product acetic acid, and then separated and refined to obtain the finished product. Other production methods include the treatment of butyric acid with sulfur monochloride, or the reaction of butyric acid with ketene (or diketene), or the reaction of butyric acid with methyl acetylene to obtain butyric anhydride. |
| category | corroded articles |
| toxicity classification | poisoning |
| acute toxicity | oral administration-rat LD50: 8790 mg/kg; Oral administration-mouse LDL0: 1000 mg/kg |
| flammability hazard characteristics | combustible in case of open flame, high temperature and strong oxidant; Combustion emission stimulates smoke |
| storage and transportation characteristics | complete packaging, light loading and unloading; warehouse ventilation, away from open flames, high temperature, separate storage from oxidant |
| fire extinguishing agent | foam, dry powder, carbon dioxide |
| occupational standard | STEL 1 mg/m3 |
| auto-ignition temperature | 535 °F |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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Raw Materials for BUTYRYL OXIDE
Downstream Products for BUTYRYL OXIDE