Product Identification

Product Name

4-Hydroxybiphenyl

Synonyms

(1,1'-Biphenyl)-4-ol
4-Biphenylol
4-Diphenylol
4-Hydroxydiphenyl
p-Biphenylol
p-Hydroxybiphenyl

CAS

92-69-3

Formula

C12H10O

Molecular Weight

170.21

EINECS

202-179-2

RTECS

DV5850000

RTECS Class

Tumorigen

Merck

12,7459

Beilstein/Gmelin

1907452

Beilstein Reference

4-06-00-04600

Physical and Chemical Properties

Appearance

Nearly white crystals.

Solubility in water

0.7 g/L (20 C)

Melting Point

162

Boiling Point

321

Vapor Pressure

0.0004 (25 C)

Density

1.29 g/cm3

pKa/pKb

9.82 (pKa)

Partition Coefficient

3.2

Heat Of Vaporization

56.9 kJ/mol

Usage

As intermediate in manufacture of resins, also in rubber industry.

First Aid Measures

Ingestion

Get medical aid. Wash mouth out with water.

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

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

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

Hazards Identification

Inhalation

May cause severe irritation of the upper respiratory tract with pain, burns, and inflammation.

Skin

Exposure may cause irritation and possible burns.

Eyes

Contact with eyes may cause severe irritation, and possible eye burns.

Ingestion

May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May be harmful if swallowed.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 36/37/38 51/53

EC Safety Phrase

S 26 36 61

UN (DOT)

2430

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

Headache, fatigue, numbness, and aching limbs have occurred in workers. Peripheral and central nerve damage may occur.

Fire Fighting Measures

Flash Point

166

Autoignition

> 250

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.

Fire Potential

Combustible material: may burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

3

Stability

Materials containing similar structural groups are normally stable.

Incompatibilities

Strong oxidizing agents, strong acids.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2430

Hazard Class

8

Packing Group

I; II; III

HS Code

2907 19 00