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Isobutyric anhydride

Isobutyric anhydride
Isobutyric anhydride structure
Chemical Name:
Isobutyric anhydride
(iso-C3H7CO)2O;isobutyryloxide;Isobutyl Anhydride;sobutyric anhydride;isobutyrylanhydride;Isobutryic anhydride;Isobutyryl anhydride;Isobutylic anhydride;ISOBUTYRIC ANHYDRIDE;anhydrideisobutyrique
Molecular Formula:
Formula Weight:
MOL File:

Isobutyric anhydride Properties

Melting point:
-53 °C
Boiling point:
182 °C(lit.)
0.954 g/mL at 25 °C(lit.)
vapor density 
5.45 (vs air)
vapor pressure 
10 mm Hg ( 67 °C)
refractive index 
n20/D 1.406(lit.)
Flash point:
152 °F
storage temp. 
Store at 0°C
Clear colorless
explosive limit
1.09%, 87°F
Water Solubility 
Moisture Sensitive
CAS DataBase Reference
97-72-3(CAS DataBase Reference)
NIST Chemistry Reference
Propanoic acid, 2-methyl-, anhydride(97-72-3)
EPA Substance Registry System
Propanoic acid, 2-methyl-, anhydride(97-72-3)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
  • NFPA
Hazard Codes  C
Risk Statements  34-21/22
Safety Statements  26-36/37/39-45
RIDADR  2922
WGK Germany  3
RTECS  NQ5550000
Autoignition Temperature 624 °F
HS Code  2915 90 70
HazardClass  8
PackingGroup  II
Hazardous Substances Data 97-72-3(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 266 mg/kg LD50 dermal Rabbit 475 mg/kg
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H227 Combustible liquid Flammable liquids Category 4 Warning P210, P280, P370+P378, P403+P235,P501
H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P234 Keep only in original container.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P310 Immediately call a POISON CENTER or doctor/physician.
P390 Absorb spillage to prevent material damage.
P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P406 Store in corrosive resistant/… container with a resistant inner liner.
P403+P235 Store in a well-ventilated place. Keep cool.
P501 Dispose of contents/container to..…

NFPA 704

Diamond Hazard Value Description
3 1
Health   3 Short exposure could cause serious temporary or moderate residual injury (e.g. liquid hydrogen, sulfuric acid, calcium hypochlorite, hexafluorosilicic acid)
Flammability   2 Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur and multiple finely divided suspended solids that do not require heating before ignition can occur. Flash point between 37.8 and 93.3 °C (100 and 200 °F). (e.g. diesel fuel, sulfur)
Instability   1 Normally stable, but can become unstable at elevated temperatures and pressures (e.g. propene)

(NFPA, 2010)

Isobutyric anhydride price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 245771 Isobutyric anhydride 97% 97-72-3 25ml $24.2 2018-11-13 Buy
Sigma-Aldrich 245771 Isobutyric anhydride 97% 97-72-3 2l $114 2018-11-13 Buy
TCI Chemical I0111 Isobutyric Anhydride >95.0%(GC)(T) 97-72-3 25mL $14 2018-11-22 Buy
TCI Chemical I0111 Isobutyric Anhydride >95.0%(GC)(T) 97-72-3 500mL $46 2018-11-22 Buy
Alfa Aesar L13240 Isobutyric anhydride, 97% 97-72-3 500ml $34.9 2018-11-15 Buy

Isobutyric anhydride Chemical Properties,Uses,Production

Chemical Properties

clear colorless liquid


Chemical intermediate.


ChEBI: An acyclic carboxylic anhydride of isobutyric acid. Metabolite observed in cancer metabolism.

General Description

A colorless liquid. Flash point 139°F. Burns skin and eyes. Vapors are heavier than air.

Air & Water Reactions

Flammable. Reacts exothermically with water or moisture-containing materials to form isobutyric acid.

Reactivity Profile

Isobutyric anhydride reacts exothermically with water. The reactions are sometimes slow, but can become violent when local heating accelerates their rate. Acids accelerate the reaction with water. Incompatible with a cids, strong oxidizing agents, alcohols, amines, and bases.


Strong irritant to tissue.

Health Hazard

May cause toxic effects if inhaled or ingested/swallowed. Contact with substance may cause severe burns to skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Isobutyric anhydride Preparation Products And Raw materials

Raw materials

Preparation Products

Isobutyric anhydride Suppliers

Global( 125)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21967 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20680 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32457 55
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 24001 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254 CHINA 20095 58
Shanghai TongYuan Chemical Co., Ltd. 021-69182866 69186366
021-69182022 China 5174 58
Nanjing Zhipu Chemical Co., Ltd 025-83172869*83172967*18851668089*13813022170
025-83311492 China 30 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40277 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30168 84

Isobutyric anhydride Spectrum

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