ICSC 0411 - CATECHOL

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

CATECHOL

ICSC: 0411
_{April 1997}

Pyrocatechol
1,2-Benzenediol
1,2-Dihydroxybenzene

CAS No: 120-80-9
RTECS No: UX1050000
UN No: 2811
EC No: 604-016-00-4

C₆H₆O₂
Molecular mass: 110.1

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible.	NO open flames.	Water spray, powder.
EXPLOSION

EXPOSURE		PREVENT DISPERSION OF DUST!
Inhalation	Burning sensation. Cough. Laboured breathing.	Local exhaust or breathing protection.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin	MAY BE ABSORBED! Redness.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain. Severe deep burns.	Face shield or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Abdominal pain. Diarrhoea. Vomiting.	Do not eat, drink, or smoke during work.	Rinse mouth. Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting, then remove to safe place. Do NOT let this chemical enter the environment. Personal protection: P2 filter respirator for harmful particles.	Xn Symbol R: 21/22-36/38 S: (2-)22-26-37 UN Hazard Class: 6.1 UN Pack Group: III	Do not transport with food and feedstuffs.

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-61GT2-III NFPA Code: H; F1; R0	Separated from strong oxidants, food and feedstuffs. Keep in the dark. Ventilation along the floor.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS CRYSTALS, WITH CHARACTERISTIC ODOUR. TURNS BROWN ON EXPOSURE TO AIR AND LIGHT.

Chemical dangers
On combustion, forms irritating fumes. Reacts with oxidants.

Occupational exposure limits
TLV: 5 ppm as TWA; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans); (ACGIH 2004).
MAK not established.

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.

Effects of short-term exposure
The substance irritates the skin, the respiratory tract and digestive tracts. The substance is corrosive to the eyes. The substance may cause effects on the central nervous system, resulting in depression, convulsions and respiratory failure. Exposure could cause a rise of blood pressure.

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point: 245.5°C Melting point: 105°C Relative density (water = 1): 1.3 Solubility in water, g/100 ml: 43 Relative vapour density (air = 1): 3.8 Flash point: 127°C c.c. Auto-ignition temperature: 510°C Octanol/water partition coefficient as log Pow: 0.88	The substance is toxic to aquatic organisms.

NOTES

Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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