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Catechol Structure

Catechol

Chemical Properties

Melting point 100-103 °C (lit.)
Boiling point 245 °C (lit.)
Density  1,371 g/cm3
vapor density  3.8 (vs air)
vapor pressure  1 mm Hg ( 75 °C)
refractive index  1.6120 (estimate)
Flash point 279 °F
storage temp.  Store below +30°C.
solubility  430g/l
form  Crystalline Flakes
pka 9.85(at 20℃)
color  white to faintly beige
PH 6 (100g/l, H2O, 20℃)
explosive limit 1.97%(V)
Water Solubility  430 g/L (20 ºC)
Sensitive  Air & Light Sensitive
Merck  14,7999
BRN  471401
Exposure limits TLV-TWA 5 ppm (~22 mg/m3) (ACGIH). .
Stability Stable. Substances to be avoided include acid chlorides, acid anhydrides, bases, oxidizing agents, nitric acid. Light sensitive; may discolour on exposure to air. Combustible.
LogP 0.93
CAS DataBase Reference 120-80-9(CAS DataBase Reference)
NIST Chemistry Reference 1,2-Benzenediol(120-80-9)
IARC 2B (Vol. 15, Sup 7, 71) 1999
EPA Substance Registry System Catechol (120-80-9)

Safety Information

Hazard Codes  Xn
Risk Statements  21/22-36/38-68-43
Safety Statements  22-26-37-39
RIDADR  UN 2811 6.1/PG 3
OEB A
OEL TWA: 5 ppm (20 mg/m3) [skin]
WGK Germany  2
RTECS  UX1050000
TSCA  Yes
HS Code  2907 29 00
HazardClass  6.1
PackingGroup  III
Hazardous Substances Data 120-80-9(Hazardous Substances Data)
Toxicity LD50 in mice (mg/kg): 260 orally; 190 i.p. (Lehman)

MSDS

Usage And Synthesis

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