Catechol

Catechol

CAS No.: 120-80-9
Molecular Formula: C6H6O2
Molecular weight: 110.11
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product description

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%.


Chemical Properties
PropertyValue

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)

Fp

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)

Biological source

Synthetic (organic)

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

PropertyValue
Hazard symbolXn
Hazard class codes21/22-36/38-68-43
Safety descriptions22-26-37-39
UN dangerous goods numberUN 2811 6.1/PG 3
Occupational exposure classA
Occupational exposure limitTWA: 5 ppm (20 mg/m³) [skin]
WGK Germany2
RTECS numberUX1050000
TSCATSCA listed
HS code29072900
Hazard class6.1
Storage class6.1C - Combustible, acute toxicity Category 3
Toxic compounds or compounds causing chronic effects
Hazard class (category)Acute toxicity, Category 3, Dermal
Acute toxicity, Category 3, Oral
Carcinogenicity, Category 1B
Serious eye damage, Category 1
Germ cell mutagenicity, Category 2
Skin irritation, Category 2
Skin sensitization, Category 1
Hazardous substances data120-80-9 (Hazardous Substances Data)
ToxicityLD50 in mice (mg/kg): 260 orally; 190 i.p. (Lehman)


Product Usage

Catechol is an important organic intermediate widely used in pharmaceuticals, agrochemicals, fragrances, and fine chemical industries. In the pharmaceutical industry, it serves as a key building block for synthesizing various active pharmaceutical intermediates and compounds. In the agrochemical sector, catechol is used in the production of insecticides and fungicides. It is also applied in fragrance synthesis, dye manufacturing, and rubber additives. In polymer-related applications, catechol and its derivatives can function as antioxidants or stabilizers to improve material performance. Due to its high reactivity, catechol is commonly used as a fundamental raw material in a wide range of organic synthesis processes.

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Inventory 2-3 working days New manufacturing 7-10 working days

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