Product Identification

Product Name

4-Chloro-o-cresol

Synonyms

4-Chloro-2-methylphenol

CAS

1570-64-5

Formula

C7H7ClO

Molecular Weight

142.59

EINECS

216-381-3

RTECS

GO7120000

RTECS Class

Mutagen

Beilstein/Gmelin

1906684

Beilstein Reference

4-06-00-01987

EC Index Number

604-050-00-X

EC Class

Toxic; Corrosive; Dangerous for the Environment

Physical and Chemical Properties

Appearance

Dark red flakes with waxy texture.

Solubility in water

Insoluble

Melting Point

46 - 47

Boiling Point

224

Vapor Pressure

0.06 (25 C)

pKa/pKb

9.71 (pKa)

Partition Coefficient

2.78

Heat Of Vaporization

48.1 kJ/mol

Usage

Chemical intermediate, eg, for mecoprop, mcpa & mcpb herbicides, chemical intermediate for its sodium salt.

Odor threshold

1.8 mg/L

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

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

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. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. May cause respiratory tract irritation. May cause liver and kidney damage. May cause cardiac abnormalities.

Skin

Causes skin irritation.

Eyes

May cause eye irritation.

Ingestion

May cause irritation of the digestive tract. May cause liver and kidney damage. May cause cardiac disturbances. May cause central nervous system effects.

Hazards

Containers may explode when heated.

EC Risk Phrase

R 23 35 50

EC Safety Phrase

S 26 36/37/39 45 61

UN (DOT)

2669

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

May cause liver and kidney damage. Effects may be delayed.

Fire Fighting Measures

Flash Point

90

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. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Containers may explode when heated. Runoff from fire control or dilution water may cause pollution. Extinguishing media: Do NOT get water inside containers. Do NOT use straight streams of water. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use water spray, fog or regular foam. Cool containers with flooding quantities of water until well after fire is out.

Fire Potential

This chemical is probably combustible.

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

Incompatibilities

Oxidizing agents, bases, acid chlorides, brass, copper, copper alloys, steel, acid anhydrides.

Stability

Stable under normal temperatures and pressures.

Decomposition

Hydrogen chloride, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

2669

Hazard Class

6.1

Packing Group

II