Product Identification

Product Name

4-Chlorobenzoic acid

Synonyms

4-Chlorobenzoic acid
Chlorodracylic acid

CAS

74-11-3

Formula

C7H5ClO2

Molecular Weight

156.57

EINECS

200-805-9

RTECS

DG4976010

RTECS Class

Drug

Merck

13,2144

Beilstein/Gmelin

907196

Beilstein Reference

4-09-00-00973

EC Class

harmful

Physical and Chemical Properties

Appearance

Triclinic crystals or light fluffy white powder.

Solubility in water

Very soluble

Melting Point

123

Boiling Point

287

Vapor Pressure

0.0012 (25 C)

Density

1.535 g/cm3

pKa/pKb

4.03 (pKa)

Partition Coefficient

2.65

Heat Of Vaporization

55.6 kJ/mol

Heat Of Combustion

-3066 kJ/mol

Usage

Chemical intermediate for m-chlorophenol.

Vapor Density

5.4

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid immediately. 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 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. 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 tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale.

Hazards Identification

Inhalation

The toxicological properties of this substance have not been fully investigated. Causes irritation of the mucous membrane and upper respiratory tract.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

Ingestion

Causes gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.

EC Risk Phrase

R 22 36/37/38

EC Safety Phrase

S 26 36/37/39

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

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

Seizures have been reported to occur in animals receiving lethal doses.

Poison Class

4

Fire Fighting Measures

Flash Point

127

Autoignition

545

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 spray, dry chemical, carbon dioxide, or appropriate foam.

Accidental Release Measures

Small spills/leaks

Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

4

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, strong bases.

Decomposition

Hydrogen chloride, carbon monoxide, carbon dioxide, chloride fumes.

Transport Information

HS Code

2916 39 00