International Chemical Safety Cards

CATECHOL ICSC: 0411
CATECHOL
Pyrocatechol
1,2-Benzenediol
1,2-Dihydroxybenzene
C6H6O2
Molecular mass: 110.1
CAS # 120-80-9
RTECS # UX1050000
ICSC # 0411
UN # 2811
EC # 604-016-00-4
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 if indicated. 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 STORAGE 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 (extra personal protection: P2 filter respirator for harmful particles).
    		Separated from strong oxidants, food and feedstuffs. Keep in the dark. Ventilation along the floor.
    		Do not transport with food and feedstuffs.
    Xn symbol
    R: 21/22-36/38
    S: (2-)22-26-37
    UN Hazard Class: 6.1
    UN Packing Group: III
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0411 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

    International Chemical Safety Cards

    CATECHOL ICSC: 0411

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    PHYSICAL STATE; APPEARANCE:
     COLOURLESS CRYSTALS , WITH CHARACTERISTIC ODOUR. TURNS BROWN ON EXPOSURE TO AIR AND LIGHT.

    PHYSICAL DANGERS:

    CHEMICAL DANGERS:
     On combustion, forms irritating fumes. Reacts with oxidants.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
     TLV: 5 ppm; 23 mg/m3 skin (ACGIH 1996).


    		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, respiratory 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
    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
    ENVIRONMENTAL
    DATA
         		The substance is toxic to aquatic organisms.
    N O T E S
    ACGIH has classified this substance as A3 -animal carcinogen.
    NFPA Code: H; F1; R0;
    ADDITIONAL INFORMATION


    ICSC: 0411 CATECHOL
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.