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Merck
CN

8.02650

Crotonic acid

for synthesis

Synonym(s):

Crotonic acid, β-Methylacrylic acid, 2-Butenoic acid

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About This Item

Linear Formula:
CH3CH=CHCOOH
CAS Number:
Molecular Weight:
86.09
UNSPSC Code:
12352106
EC Index Number:
203-533-9
NACRES:
NA.22
MDL number:
Assay:
≥99.0% (GC)
Form:
crystals
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vapor pressure

0.25 hPa ( 20 °C)

Quality Level

assay

≥99.0% (GC)

form

crystals

autoignition temp.

500 °C

potency

1000 mg/kg LD50, oral (Rat), 600 mg/kg LD50, skin (Rabbit)

pH

3 (20 °C, 10 g/L in H2O)

bp

185.0-199.5 °C/1013 hPa

mp

70-73 °C

transition temp

flash point 90 °C

density

1.02 g/cm3 at 20 °C

bulk density

543 kg/m3

storage temp.

2-30°C

SMILES string

OC(=O)\C=C\C

InChI

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

InChI key

LDHQCZJRKDOVOX-NSCUHMNNSA-N

Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Melting range (lower value): ≥ 70 °C
Melting range (upper value): ≤ 73 °C
Identity (IR): passes test


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pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1

Storage Class

8A - Combustible, corrosive hazardous materials

wgk

WGK 2

flash_point_f

190.4 °F - closed cup

flash_point_c

88 °C - closed cup



Certificates of Analysis (COA)

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Global Trade Item Number

SKUGTIN
802650100004022536374949
802650010004022536374932