Product Identification

Product Name

4-Chloro-1,3-dihydroxybenzene

Synonyms

4-Chloro-1,3-dihydroxybenzene
4-Chlorobenzene-1,3-diol

CAS

95-88-5

Formula

C6H5ClO2

Molecular Weight

144.56

EINECS

202-462-0

RTECS

VH0450000

RTECS Class

Mutagen; Reproductive Effector; Primary Irritant

Beilstein/Gmelin

2042864

Beilstein Reference

4-06-00-05684

EC Class

harmful, irritant

Physical and Chemical Properties

Appearance

Light beige crystalline powder or chunks.

Solubility in water

Slightly soluble

Melting Point

103 - 105

Boiling Point

259

Vapor Pressure

0.008 (25 C)

pKa/pKb

8.24

Partition Coefficient

1.67

Heat Of Vaporization

51.7 kJ/mol

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. Wash clothing before reuse.

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. Remove contaminated clothing and wash before reuse. 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 dust may cause respiratory tract irritation.

Skin

May cause skin irritation.

Eyes

Causes eye irritation.

Ingestion

Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea.

Hazards

Containers may explode when heated.

EC Risk Phrase

R 20/21/22

EC Safety Phrase

S 22 36/37

UN (DOT)

1557

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 toxicological properties of this material have not been investigated.

Fire Fighting Measures

Flash Point

120

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. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Fire Potential

Combustible material: may burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

3

Incompatibilities

Oxidizing agents, acid chlorides, acid anhydrides.

Stability

Stable under normal temperatures and pressures.

Decomposition

Hydrogen chloride, carbon monoxide, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

1557

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2908 10 00