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A2346412

Catechol , StandardforGC,≥99.5%(GC) , 120-80-9

Synonym(s):
Catechol;Pyrocatechol;1,2-Benzenediol;1,2-Dihydroxybenzene;1,2-Dihydroxybenzene, Catechol

CAS NO.:120-80-9

Empirical Formula: C6H6O2

Molecular Weight: 110.11

MDL number: MFCD00002188

EINECS: 204-427-5

Update time: 2022-07-08

PRODUCT 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
pka 9.85(at 20℃)
form  Crystalline Flakes
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

Description and Uses

Catechol is a white crystalline solid. Turnsbrown on contact with light and air. Molecularweight=110.12; Specific gravity (H2O:1)=1.3; Boilingpoint=245.5℃; Freezing/Melting point=104℃. It sublimes readily; Vapor pressure=10 mmHg at 117℃; Flashpoint=127℃; Autoignition temperature=512℃.Explosive Limits in air: LEL=1.4%; UEL-Unknown.Hazard Identification (based on NFPA 704 M RatingSystem): Health 3, Flammability 1, Reactivity 2. Solubilityin water=44%.

Catechol is used in photography, in dyeing fur, and as a topical antiseptic.

Safety

Symbol(GHS) 
GHS05,GHS06,GHS08
Signal word  Danger
Hazard statements  H301+H311-H315-H317-H318-H341-H350
Precautionary statements  P202-P261-P280-P301+P310-P302+P352+P312-P305+P351+P338
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
Toxicity LD50 in mice (mg/kg): 260 orally; 190 i.p. (Lehman)

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