Product Identification

Product Name

(+/-)-alpha-Hydroxyphenylacetic acid

Synonyms

2-Hydroxy-2-phenylacetic acid
a-Hydroxyphenylacetic acid
Almond acid
Amygdalic acid
Paramandelic acid
Phenylglycolic acid

CAS

611-72-3

Formula

C8H8O3

Molecular Weight

152.15

EINECS

210-277-1

RTECS

OO6300000

Beilstein/Gmelin

510011

Beilstein Reference

4-10-00-00565

Physical and Chemical Properties

Appearance

White crystalline powder with a faint odor.

Solubility in water

150 g/L

Melting Point

117 - 120

Boiling Point

322

Vapor Pressure

0.0001 (25 C)

Density

1.361 g/cm3

pKa/pKb

3.41 (pKa)

Partition Coefficient

.92

Heat Of Vaporization

59.5 kJ/mol

Usage

Present in certain skin care products.

Vapor Density

1.3

Refractive Index

1.5204

First Aid Measures

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. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

The toxicological properties of this substance have not been fully investigated. Inhalation of dust may cause respiratory tract irritation.

Skin

No information regarding skin irritation and other potential effects was found. Continued absorption may cause kidney irritation.

Eyes

No information regarding eye irritation and other potential effects was found.

Ingestion

The toxicological properties of this substance have not been fully investigated.

Exposure Controls/Personal Protection

Personal 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.

Exposure Effects

The toxological properties of this substance have not been fully investigated.

Poison Class

4 (Substances and products that must be considered harmful)

Fire Fighting Measures

Flash Point

163

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.

Stability and Reactivity

Disposal Code

4

Stability

No data.

Incompatibilities

Strong oxidizing agents

Decomposition

Carbon monoxide, carbon dioxide.

Transport Information

HS Code

2918 19 80