Product Identification

Product Name

p-Chloro-m-cresol

Synonyms

4-Chloro-3-methylphenol
Chlorocresol
Parachloromethacresol
p-Chloro-m-cresol

CAS

59-50-7

Formula

C7H7ClO

Molecular Weight

142.59

EINECS

200-431-6

RTECS

GO7100000

RTECS Class

Mutagen

Merck

13,2152

Beilstein/Gmelin

1237629

Beilstein Reference

4-06-00-02064

EC Index Number

604-014-00-3

EC Class

Harmful; Irritant; Sensitising; Dangerous for the Environment

Physical and Chemical Properties

Appearance

White or slightly pink crystals, odorless when very pure but usually has slight phenolic odor. Aqueous solutions turn yellow on exposure to light and air.

Solubility in water

3.8 g/L

Melting Point

63 - 65

Boiling Point

235

Vapor Pressure

0.75 (20 C)

Density

0.90 g/cm3 (20 C)

pKa/pKb

9.63 (pKa)

Partition Coefficient

3.1

Heat Of Vaporization

49.1 kJ/mol

Usage

External germicides, preservative for glues, gums, paints, inks, textile & leather goods.

Saturation Concentration

80.28 ppm (0.0080%) at 20 C (calculated)

Vapor Density

4.9

Odor threshold

0.1 mg/kg (detection in water)

Refractive Index

1.5403 (73 C)

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.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. 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 immediately.

Handling and Storage

Storage

Store in a cool, dry place. Keep container closed when not in use.

Handling

Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Causes respiratory tract irritation.

Skin

Causes skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.

Eyes

Causes eye irritation.

Ingestion

Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.

Hazards

Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.

EC Risk Phrase

R 21/22 41 43 50

EC Safety Phrase

S 26 36/37/39 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.

Fire Fighting Measures

Flash Point

93

Autoignition

590

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Fire Potential

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. Reduce airborne dust and prevent scattering by moistening with water. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

3

Incompatibilities

Bases, acid chlorides, acid anhydrides, sodium hydroxide, oxidizing agents, steel, brass, copper, and copper alloys.

Stability

Stable under normal temperatures and pressures.

Decomposition

Hydrogen chloride, chlorine, phosgene, carbon monoxide, 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

HS Code

2908 10 00