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Crotonic acid

Crotonic acid
Crotonic acid
Chemical Name:
Crotonic acid
C01771;crotonic;FEMA 3908;Crotonsαure;CH3CH=CHCOOH;2-Butensαure;’rotonicacid;BUTENOIC ACID;Crotonic acid;a-butenoicacid
Molecular Formula:
Formula Weight:
MOL File:

Crotonic acid Properties

Melting point:
70-72 °C(lit.)
Boiling point:
180-181 °C(lit.)
1.027 g/mL at 25 °C(lit.)
vapor density 
2.97 (vs air)
vapor pressure 
0.19 mm Hg ( 20 °C)
refractive index 
1.4210 (estimate)
Flash point:
190 °F
Water Solubility 
CAS DataBase Reference
3724-65-0(CAS DataBase Reference)
NIST Chemistry Reference
Crotonic acid(3724-65-0)
EPA Substance Registry System
2-Butenoic acid(3724-65-0)


Hazard Codes  C
Risk Statements  21/22-34
Safety Statements  26-36/37/39-45
RIDADR  UN 2823 8/PG 3
WGK Germany  3
RTECS  GQ2900000
Hazardous Substances Data 3724-65-0(Hazardous Substances Data)

Crotonic acid price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy

Crotonic acid Chemical Properties,Uses,Production

General Description

A white crystalline solid. Shipped as either a solid or liquid. Melting point 59°F. Soluble in water and less dense than water. Flash point 190°F. Corrosive to metals and tissue.

Air & Water Reactions

Soluble in water.

Reactivity Profile

Crotonic acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in Crotonic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions.

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.

Crotonic acid Preparation Products And Raw materials

Raw materials

Preparation Products

Crotonic acid Suppliers

Global( 136)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Springchem New Material Technology Co.,Limited
86-21-51752789 China 839 57
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 22119 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20795 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32764 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1465 55
Shanghai Orgchem Co.,Ltd. +86-21-5877 1921
+86-21-5877 1925 China 9847 55
Arden pharmaceutical &chemical Co., Ltd +86-(0)533-3595900 13793319233
+86-(0)533-3595900 China 670 61
ShangHai DEMO Chemical Co.,Ltd 400-021-7337 qq:2355568890
0086-21-50182339; China 2608 57
Beijing dtftchem Technology Co., Ltd. 13651141086; 86(10)60275028、60275820
86 (10) 60270825 China 3433 62
Beijing Ouhe Technology Co., Ltd +86-10-4006331231;+86-10-51280831;+86-10-82967028
+86-10-82967029 China 12613 60

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