Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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4-Chlorobenzene-1,2-diol(2138-22-9)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
4-Chlorobenzene-1,2-diol
Synonyms
4-Chloro-1,2-dihydroxybenzene
4-Chlorobenzene-1,2-diol
4-Chlorocatechol
4-Monochlorocatechol
CAS
2138-22-9
Formula
C6H5ClO2
Molecular Weight
144.56
EINECS
218-381-9
RTECS
UX1490000
RTECS Class
Other
Beilstein/Gmelin
1907691
Beilstein Reference
4-06-00-05614

Physical and Chemical Properties

Solubility in water
Insoluble
Melting Point
90 - 91
Boiling Point
267
Vapor Pressure
0.007 (25 C)
pKa/pKb
8.72 (pKa)
Heat Of Vaporization
70.2 kJ/mol

First Aid Measures

Ingestion
Seek medical assistance.
Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
Eyes
Immediately flush with running water for at least 20 minutes.

Handling and Storage

Storage
Keep tightly closed.

Hazards Identification

Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
Eyes
See Inhalation.
Ingestion
See Inhalation.
Hazards
Contact with metals may evolve flammable hydrogen gas.
EC Risk Phrase
34
EC Safety Phrase
26 36/37/39 45
UN (DOT)
1759

Exposure Controls/Personal Protection

Personal Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Exposure Effects
Corrosive. Causes burns.

Fire Fighting Measures

Flash Point
115
Fire Fighting
Extinguish using agent most appropriate for surrounding fire.
Fire Potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks
ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.

Stability and Reactivity

Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide, Hydrogen chloride gas.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
1759
Hazard Class
8
Packing Group
II
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