ChemicalBook > CAS DataBase List > Crotonic acid

Crotonic acid

Product Name
Crotonic acid
CAS No.
107-93-7
Chemical Name
Crotonic acid
Synonyms
(E)-But-2-enoic acid;Crotonate;BUT-2-ENOIC ACID;2-Butenoic acid, (E)-;BUTENOIC ACID;(E)-2-BUTENOIC ACID;TRANS-CROTONIC ACID;NSC 8751;(e)-2-butenoicaci;(2E)-2-Butenoic acid
CBNumber
CB6145402
Molecular Formula
C4H6O2
Formula Weight
86.09
MOL File
107-93-7.mol
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Crotonic acid Property

Melting point:
70-72 °C (lit.)
Boiling point:
180-181 °C (lit.)
Density 
1.027 g/mL at 25 °C (lit.)
bulk density
543kg/m3
vapor density 
2.97 (vs air)
vapor pressure 
0.19 mm Hg ( 20 °C)
refractive index 
1.4228
FEMA 
3908 | (E)-2-BUTENOIC ACID
Flash point:
190 °F
storage temp. 
Store below +30°C.
solubility 
H2O: soluble
pka
4.69(at 25℃)
form 
Crystalline Flakes
color 
White to light yellow
PH
3 (10g/l, H2O, 20℃)
Odor
at 1.00 %. milky
Odor Type
milky
explosive limit
15.1%, 171°F
Water Solubility 
94 g/L (25 ºC)
Merck 
14,2597
JECFA Number
1371
BRN 
1719943
InChIKey
LDHQCZJRKDOVOX-NSCUHMNNSA-N
LogP
0.85 at 25℃
CAS DataBase Reference
107-93-7(CAS DataBase Reference)
NIST Chemistry Reference
Crotonic acid(107-93-7)
EPA Substance Registry System
2-Butenoic acid, (2E)- (107-93-7)
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Safety

Hazard Codes 
C,N,Xi
Risk Statements 
21/22-34-50/53-36/37/38
Safety Statements 
26-36/37/39-45-61-37/39
RIDADR 
UN 2823 8/PG 3
WGK Germany 
3
RTECS 
GQ2900000
Autoignition Temperature
744 °F
HazardClass 
8
PackingGroup 
III
HS Code 
29161940
Toxicity
LD50 orally in rats: 1.0 g/kg (Smyth, Carpenter)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H318Causes serious eye damage

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
113018
Product name
Crotonic acid
Purity
98%
Packaging
500g
Price
$59.6
Updated
2025/07/31
Sigma-Aldrich
Product number
113018
Product name
Crotonic acid
Purity
98%
Packaging
3kg
Price
$319
Updated
2025/07/31
TCI Chemical
Product number
C0416
Product name
Crotonic Acid
Purity
>98.0%(GC)(T)
Packaging
25g
Price
$51
Updated
2025/07/31
TCI Chemical
Product number
C0416
Product name
Crotonic Acid
Purity
>98.0%(GC)(T)
Packaging
100g
Price
$116
Updated
2025/07/31
TCI Chemical
Product number
C0416
Product name
Crotonic Acid
Purity
>98.0%(GC)(T)
Packaging
500g
Price
$146
Updated
2023/01/07
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Crotonic acid Chemical Properties,Usage,Production

Chemical Properties

Crotonic acid is a white to light yellow crystalline flakes with a pungent odor. It is moderately soluble in water but highly soluble in organic solvents such as ethanol and ether.

Uses

trans-Crotonic acid is used in the copolymerization of crotonic acid hydrogel systems by using gamma-rays. The crosslinked copolymeric crotonic acid hydrogels release fertilizers and drugs that help to prevent environmental pollution.

Preparation

(E)-2-Butenoic acid may be formed by oxidation of crotonaldehyde, 2-butenal. If (Z)-butenoic acid is heated at 180°C, it is converted to (E)-2-butenoid acid.

Definition

ChEBI: Crotonic acid is a but-2-enoic acid with a trans- double bond at C-2. It has been isolated from Daucus carota. It has a role as a plant metabolite. It is a conjugate acid of a crotonate.

Application

Crotonic acid is an unsaturated fatty acid containing a double bond and a carboxyl group in its molecular structure, rendering it highly reactive. It serves various industrial applications, primarily in the preparation of resins, fungicides, surface coatings, plasticisers, and pharmaceuticals.

General Description

Crotonic acid undergoes esterification with butan-2-ol by following second order reaction kinetics.

Flammability and Explosibility

Not classified

storage

Store at RT

Purification Methods

Distil the acid under reduced pressure and/or recrystallise it from pet ether (b 60-80o) or water, or by partial freezing of the melt. [Beilstein 2 IV 1498.]

References

[1] VAHIDEH ELHAMI Mark A H, BOELO SCHUUR* Crotonic Acid Production by Pyrolysis and Vapor Fractionation of Mixed Microbial Culture-Based Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)[J]. Industrial & Engineering Chemistry Research, 2023, 62 2: 916-923. DOI:10.1021/acs.iecr.2c03791.
[2] ZHIQUN YU*, JIADI ZHOU Continuous Flow Synthesis of Crotonic Acid from Crotonaldehyde[J]. Organic Process Research & Development, 2024, 28 5: 1773-1782. DOI:10.1021/acs.oprd.3c00376.
[3] KANG S, CHEN R, FU J, et al. Catalyst-free valorization of poly-3-hydroxybutyrate to crotonic acid†[J]. Reaction Chemistry & Engineering, 2021, 10: 1791-1795. DOI:10.1039/D1RE00273B.

Crotonic acid Preparation Products And Raw materials

Raw materials

Cobalt acetate Crotonaldehyde (trans predominantly) Copper (II) acetate monohydrate Crotonic acid Malonic acid

Preparation Products

3-PHENYLBUTYRIC ACID DL-3-Hydroxybutyric acid sodium salt Crotamiton DL-3-HYDROXYBUTYRIC ACID SODIUM SALT
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View Lastest Price from Crotonic acid manufacturers

Hebei Chuanghai Biotechnology Co., Ltd
Product
Crotonic acid 107-93-7
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10 mt
Release date
2024-11-21
Henan Aochuang Chemical Co.,Ltd.
Product
Crotonic acid 107-93-7
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
1Ton
Release date
2022-09-30
Hebei Yanxi Chemical Co., Ltd.
Product
Crotonic acid 107-93-7
Price
US $40.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
10 tons
Release date
2024-05-09

107-93-7, Crotonic acidRelated Search:

Fumaronitrile ETHYL 3-AMINOCROTONATE Retinoic acid Maleic acid Ethyl 2-(Chlorosulfonyl)acetate trans,trans-2,4-Undecadienal Fumaric acid Folic acid Glycine tranylcypromine Citric acid Crotonaldehyde (trans predominantly) Ascoric Acid Crotonic acid 3-Amino-2-butenoic acid ethyl ester Isopropyl 3-aminocrotonate 2-Crotonic acid，ethyl ester,Crotonic acid ethyl Methyl 3-aminocrotonate

  • TRANS-2-BUTENOIC ACID
  • TRANS-CROTONIC ACID
  • (2E)-2-Butenoic acid
  • (e)-2-butenoicaci
  • (E)-CH3CH=CHCOOH
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  • CROTONIC ACID CRYSTALLINE
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  • Crotonic acid, 98% 500GR
  • alpha-butenoic acid
  • alpha-crotonic acid
  • beta-Methacrylic acid
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  • Crotonicacid,(E)-
  • Soildcrotonicacid
  • trans-but-2-enoicacid
  • 2-Butenoicacid,(E)-
  • Crotonate
  • NSC 8751
  • Crotonis Fructus
  • Crotonic acid, 98%, reagent grade
  • Crotonic Acid &gt
  • Trans-2-Butemoic Acid/ (E)-2-Butenoic acid
  • Crotonic acid, GR 99%+
  • CROTONIC ACID For Synthesis
  • 2-butenoic acid (trans)
  • Crotonic Acid 97% For Synthesis
  • Crotonaldehyde Impurity 3
  • Trans-crotonic acid 98%
  • Crotonic acid
  • Crotonic acid
  • -Butenicacid
  • 107-93-7
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  • C1 to C5