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Basic Information
CAS No.: 119-84-6
Name: Cinnamic acid
Molecular Structure:
Molecular Structure of 119-84-6 (Cinnamic acid)
Formula: C9H8O2
Molecular Weight: 148.161
Synonyms: Dihydrocoumarin;Melilotin;Melilotin (coumarin);Melilotol;Hydrocoumarin(6CI,7CI,8CI);Hydrocinnamic acid, o-hydroxy-, d-lactone (6CI);2-Chromanone;3,4-Dihydro-1H-benzopyran-2-one;3,4-Dihydro-2H-1-benzopyran-2-one;
EINECS: 204-354-9
Density: 1.169 g/cm3
Melting Point: 24-25 °C(lit.)
Boiling Point: 272 °C at 760 mmHg
Flash Point: 108.4 °C
Solubility: insoluble in water
Appearance: Colorless to pale yellow clear liquid
Hazard Symbols: HarmfulXn
Risk Codes: 22-36/37/38
Safety: 26-36
PSA: 26.30000
LogP: 1.53820
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Chemistry

Hydrocoumarin is also named as dihydrocoumarin;dihydrocoumarin;3,4-Dihydrocoumarin; AKOS 222-08; 3,4-Dihydro-1-benzopyran-2-one;AKOS 222-08;1,2-Benzodihydropyrone,and so on.

Molecular Formula: C9H8O2
Molecular Weight: 148.16
EINECS: 204-354-9
Melting point:  24-25 °C(lit.)
Boiling point:  272 °C(lit.)
Density:  1.169 g/mL at 25 °C(lit.)
Refractive index:  n20/D 1.556(lit.)
FEMA:  2381
Flash point:  >230 °F
Water Solubility:  insoluble
BRN:  4584

Uses

Hydrocoumarin is commonly used as food flavors, tobacco flavors,soap essences, cosmetics fragrances, etc.It is also used as organic solvents and medicine intermediates.

Toxicity Data With Reference

1.   

skn-rbt 500 mg/24H MOD

   FCTXAV    Food and Cosmetics Toxicology. 12 (1974),521.
2.   

skn-gpg 1%/48H MOD

   JSCCA5    Journal of the Society of Cosmetic Chemists. 28 (1977),357.
3.   

orl-rat LD50:1460 mg/kg

   FCTXAV    Food and Cosmetics Toxicology. 2 (1964),327.
4.   

ipr-mus LD50:200 mg/kg

   NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) AD277-689 .
5.   

orl-gpg LD50:1760 mg/kg

   FCTXAV    Food and Cosmetics Toxicology. 2 (1964),327.
 
RTECS:  MW5775000

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

A poison by intraperitoneal route. Moderately toxic by ingestion. A skin irritant. Combustible liquid. When heated to decomposition it emits acrid smoke and fumes.

Hazard Codes:  Xn
Risk Statements:  22-36/37/38
Safety Statements:  26-36
WGK Germany:  3
HS Code:  29322980
Hazardous Substances Data: 119-84-6(Hazardous Substances Data)