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Catechol

Synonyms & Trade Names
1,2-Benzenediol; o-Benzenediol; 1,2-Dihydroxybenzene; o-Dihydroxybenzene; 2-Hydroxyphenol; Pyrocatechol
CAS No.
120-80-9
RTECS No.
UX1050000
DOT ID & Guide
Formula
C6H4(OH)2
Conversion
1 ppm = 4.50 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
: TWA 5 ppm (20 mg/m3) [skin]
OSHA PEL
†: none
Measurement Methods

OSHA PV2014
See: NMAM or OSHA Methods
Physical Description
Colorless, crystalline solid with a faint odor. [Note: Discolors to brown in air & light.]
MW:
110.1
BP:
474°F		 MLT: 221°F
Sol:
44%		 VP(244°F): 10 mmHg
IP:
?
Sp.Gr:
1.34
Fl.P:
261°F
UEL:
?
LEL:
1.4%
Combustible Solid
Incompatibilities & Reactivities
Strong oxidizers, nitric acid
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, respiratory system; skin sensitization, dermatitis; lacrimation (discharge of tears), burns eyes; convulsions, increased blood pressure, kidney injury
Target Organs
Eyes, skin, respiratory system, central nervous system, kidneys
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Water wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0411
 

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