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Phenylacetic acid
Phenylacetic acid
- CAS:
- 103-82-2
- MF:
- C8H8O2
- MW:
- 136.15
Properties
- Melting point:
- 76-78 °C(lit.)
- Boiling point:
- 265 °C(lit.)
- Density
- 1.081 g/mL at 25 °C(lit.)
- vapor density
- ~4 (vs air)
- vapor pressure
- 1 mm Hg ( 97 °C)
- refractive index
- 1.5120 (estimate)
- Flash point:
- 132°C
- storage temp.
- Store at RT.
- solubility
- DMF: 1 mg/ml; PBS (pH 7.2): 10 mg/ml
- form
- solid
- pka
- 4.28(at 18℃)
- Specific Gravity
- 1.081
- color
- Leaflets on distillation in vac; plates, tablets from pet ether
- Odor
- disagreeable odor of geranium
- PH
- 3.7(1 mM solution);3.17(10 mM solution);2.66(100 mM solution)
- biological source
- synthetic
- Odor Type
- honey
- Water Solubility
- 15 g/L (20 ºC)
- Merck
- 14,7268
- JECFA Number
- 1007
- BRN
- 1099647
- Dielectric constant
- 3.0（20℃）
- Stability:
- Stable. Incompatible with strong oxidizing agents.
- LogP
- 0.811 at 25℃
- CAS DataBase Reference
- 103-82-2(CAS DataBase Reference)
- NIST Chemistry Reference
- Benzeneacetic acid(103-82-2)
- EPA Substance Registry System
- Phenylacetic acid (103-82-2)
Safety Information
- Symbol(GHS)
GHS07
- Signal word
- Warning
- Hazard statements
- H319
- Precautionary statements
- P305+P351+P338
- Hazard Codes
- Xi
- Risk Statements
- 36/37/38
- Safety Statements
- 26-36-37/39
- RIDADR
- UN 3335
- WGK Germany
- 1
- RTECS
- AJ2430000
- F
- 13
- TSCA
- Yes
- HS Code
- 29163400
- Hazardous Substances Data
- 103-82-2(Hazardous Substances Data)
- Toxicity
- LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rabbit > 5000 mg/kg
Use
Phenylacetic Acid occurs in Japanese peppermint oil, in neroli oil, and in traces in rose oils. It is a volatile aroma constituent of many foods (e.g., honey). It forms colorless crystals (mp 78°C) that have a honey odor. The common route to phenylacetic acid is conversion of benzyl chloride into benzyl cyanide by reaction with sodium cyanide, followed by hydrolysis. Because of its intense odor, phenylacetic acid is added to perfumes in small quantities for rounding off blossom odors. Addition to fruit aromas imparts a sweet honey note.
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