MilliporeSigma
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8.00235

Sigma-Aldrich

Cinnamic acid

for synthesis

Synonym(s):
Cinnamic acid
Linear Formula:
C6H5CH=CHCOOH
CAS Number:
Molecular Weight:
148.16
MDL number:
EC Index Number:
205-398-1

Quality Level

vapor pressure

1.3 hPa ( 128 °C)

assay

≥99.0% (HPLC)

form

powder

potency

2500 mg/kg LD50, oral (Rat)
>5000 mg/kg LD50, skin (Rabbit)

pH

3-4 (20 °C, 0.4 g/L in H2O)

bp

300 °C/1013 hPa

mp

132-136 °C

transition temp

flash point 160 °C

solubility

0.4 g/L

density

1.25 g/cm3 at 4 °C

bulk density

500 kg/m3

storage temp.

no temp limit

InChI

1S/C9H8O2/c10-9(11)7-6-8-4-2-1-3-5-8/h1-7H,(H,10,11)/b7-6+

InChI key

WBYWAXJHAXSJNI-VOTSOKGWSA-N

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Analysis Note

Assay (HPLC, area%): ≥ 99.0 % (a/a)
Melting range (lower value): ≥ 132 °C
Melting range (upper value): ≤ 136 °C
Identity (IR): passes test

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

320.0 °F

Flash Point(C)

160 °C

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