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4-Chlorobenzene-1,2-diol(2138-22-9)

4-Chlorobenzene-1,2-diol(2138-22-9)
Product IdentificationBack to Contents
【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 PropertiesBack to Contents
【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 MeasuresBack to Contents
【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 StorageBack to Contents
【Storage】

Keep tightly closed.
Hazards IdentificationBack to Contents
【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 ProtectionBack to Contents
【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 MeasuresBack to Contents
【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 MeasuresBack to Contents
【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 ReactivityBack to Contents
【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 InformationBack to Contents
【UN Number】

1759
【Hazard Class】

8
【Packing Group】

II
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