Phenylacetic acid

  • Phenylethanoic acid
  • Benzenacetic acid
  • Benzacetic acid
  • alpha-Toluic acid
Formula
C6H5CH2COOH
Structure
Description
Shiny, white plate crystals, floral odor.
Uses
Used in manufacture of penicillin g, fungicide, plant hormones, flavoring, lab reagent.

Registry Numbers and Inventories.
CAS
103-82-2
EC (EINECS/ELINCS)
203-148-6
EC Class
irritant
R 36/37/38
RTECS
AJ2430000
RTECS class
Reproductive Effector; Primary Irritant
UN (DOT)
1805
Merck
12,7422
Beilstein/Gmelin
1099647
Beilstein Reference
4-09-00-01614
Swiss Giftliste 1
G-2723
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H8O2
Formula mass
136.15
Melting point, °C
74 - 77
Boiling point, °C
265
Vapor pressure, mmHg
0.0046 (25 C)
Density
1.081 g/cm3
Solubility in water
Very soluble
Viscosity
3.54 cp (77 C)
Refractive index
1.50246 (79.8 C)
pKa/pKb
4.30 (pKa)
Partition coefficient, pKow
1.41
Heat of fusion
16.5 kJ/mol
Heat of vaporization
53.2 kJ/mol
Heat of combustion
-3897 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from strong bases.
Handling
Wash thoroughly after handling. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Disposal code
4
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong bases.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
156
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Can burn in a fire, releasing toxic vapors. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
May cause respiratory tract irritation.
   Skin
Causes skin burns.
   Eyes
Causes eye burns.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Discard contaminated clothing in a manner which limits further exposure.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed.

Transport.
UN number
1805
Response guide
Hazard class
8
Packing Group
III
 
4. Organic acids
HS Code
2916 34 00