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 code2907 29 00
Hazard class6.1
Packing groupIII
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 a critical organic compound and a versatile building block extensively used in the fine chemical and pharmaceutical industries. Its most prominent application is as a key intermediate in the synthesis of life-saving drugs, including catecholamines like adrenaline, dopamine, and L-dopa, which are essential for treating neurological and cardiovascular conditions. In the agrochemical sector, it serves as a fundamental precursor for manufacturing high-efficiency insecticides and carbamate pesticides. Beyond life sciences, Catechol is vital in the flavor and fragrance industry for producing vanillin and ethylvanillin. Furthermore, its unique antioxidant and metal-chelating properties make it an indispensable additive in industrial applications, such as rubber vulcanization accelerators, polymerization inhibitors, and specialized photographic developing agents.

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

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
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Q1: Are Your Products Compliant With International Standards?

A1: Yes, our company holds a number of internationally recognized core certifications. All production and operation activities strictly follow international environmental, safety and quality standards, and each batch of products is accompanied by a compliance test report to meet the chemical industry requirements in different regions around the world.


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