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113018

Sigma-Aldrich

Crotonic acid

98%

Synonym(s):

trans-2-Butenoic acid

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About This Item

Linear Formula:
CH3CH=CHCOOH
CAS Number:
107-93-7
Molecular Weight:
86.09
Beilstein:
1719943
EC Number:
203-533-9
MDL number:
MFCD00002701
UNSPSC Code:
12352100
PubChem Substance ID:
24847127
NACRES:
NA.22

vapor density

2.97 (vs air)

Quality Level

100

vapor pressure

0.19 mmHg ( 20 °C)

Assay

98%

autoignition temp.

744 °F

expl. lim.

15.1 %, 171 °F
2.2 %, 135 °F

bp

180-181 °C (lit.)

mp

70-72 °C (lit.)

solubility

H2O: soluble

density

1.027 g/mL at 25 °C (lit.)

SMILES string

[H]\C(C)=C(\[H])C(O)=O

InChI

1S/C4H6O2/c1-2-3-4(5)6/h2-3H,1H3,(H,5,6)/b3-2+

InChI key

LDHQCZJRKDOVOX-NSCUHMNNSA-N

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General description

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

Application

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 Note

Crotonic acid dissolves in water at a concentartion of 100 mg/ml to yield a clear, colorless solution.

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H318

Precautionary Statements

P280 - P305 + P351 + P338

Hazard Classifications

Eye Dam. 1

WGK

WGK 2

Flash Point(F)

190.4 °F

Flash Point(C)

88 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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