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trans-Cinnamic acid Structure

trans-Cinnamic acid

Chemical Properties

Melting point 133 °C (lit.)
Boiling point 300 °C(lit.)
Density  1.248
vapor pressure  1.3 hPa (128 °C)
refractive index  1.5049 (estimate)
Flash point >230 °F
storage temp.  2-8°C
solubility  0.4g/l
form  Crystalline Powder
pka 4.44(at 25℃)
color  White to almost white
Specific Gravity 0.91
Odor Faint odour
PH Range 3 - 4
PH 3-4 (0.4g/l, H2O, 20℃)
Odor Type balsamic
Water Solubility  0.4 g/L (20 ºC)
λmax 273nm(MeOH)(lit.)
Merck  14,2299
BRN  1905952
Stability Light Sensitive
InChIKey WBYWAXJHAXSJNI-VOTSOKGWSA-N
LogP 2.130
CAS DataBase Reference 140-10-3(CAS DataBase Reference)
NIST Chemistry Reference Cinnamic acid(140-10-3)
EPA Substance Registry System (E)-Cinnamic acid (140-10-3)

Safety Information

Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-37/39
WGK Germany  1
RTECS  GD7850000
TSCA  Yes
HS Code  29163900
Toxicity LD50 orally in Rabbit: 2500 mg/kg LD50 dermal Rabbit > 5000 mg/kg

MSDS

Usage And Synthesis

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