International Chemical Safety Cards

HEPTACHLOR ICSC: 0743
HEPTACHLOR
1,4,5,6,7,8,8-Heptachloro-3a,4,7,7a-tetrahydro-4,7-methanoindene
C10H5Cl7
Molecular mass: 373.35
CAS # 76-44-8
RTECS # PC0700000
ICSC # 0743
UN # 2761
EC # 602-046-00-2
TYPES OF
HAZARD/
EXPOSURE
ACUTE HAZARDS/
SYMPTOMS
PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION Explosion hazard will depend on the solvent used or on the characteristics of the dust.

In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
PREVENT DISPERSION OF DUST! PREVENT GENERATION OF MISTS! STRICT HYGIENE!

  • INHALATION
  • Irritation from dust.
    Breathing protection.
    Fresh air, rest. Refer for medical attention.
  • SKIN
  • MAY BE ABSORBED!
    Protective gloves.
    Remove contaminated clothes. Rinse and then wash skin with water and soap.
  • EYES

  • Safety goggles 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

  • Do not eat, drink, or smoke during work.
    Do NOT induce vomiting. Rest. Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Do NOT wash away into sewer. Sweep spilled substance into sealable containers. Carefully collect remainder, then remove to safe place (extra personal protection: complete protective clothing including self-contained breathing apparatus).
    Separated from food and feedstuffs, strong bases. Cool. Dry.
    Do not transport with food and feedstuffs.
    T symbol
    R: 24/25-33-40
    S: 36/37-44
    UN Hazard Class: 6.1
    UN Packing Group: II
    Severe marine pollutant.
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0743 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

    HEPTACHLOR ICSC: 0743

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    PHYSICAL STATE; APPEARANCE:
    WHITE CRYSTALS WITH MILD ODOUR OF CAMPHOR.

    PHYSICAL DANGERS:


    CHEMICAL DANGERS:
    The substance decomposes on heating producing toxic fumes: chlorine, hydrogen chloride. Reacts with strong oxidants.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV: ppm; 0.5 mg/m3 (as TWA) (skin) (ACGIH 1991-1992).
    TLV (as STEL): ppm; 2 mg/m3 (ACGIH 1991-1992).
    PDK: 0.01 mg/m3 (USSR 1977).


    ROUTES OF EXPOSURE:
    The substance can be absorbed into the body by inhalation of dusts from powder concentrates, through the skin especially from liquid formulations, and by ingestion.

    INHALATION RISK:
    Evaporation at 20C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly when dispersed.

    EFFECTS OF SHORT-TERM EXPOSURE:
    Inhalation of dust may cause irritation.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    This substance is possibly carcinogenic to humans. Heptachlor epoxide has been found in human milk in areas with high heptachlor exposure in the population.
    PHYSICAL
    PROPERTIES
    Boiling point at 0.2 kPa: 135-145C
    Melting point: 95-96C
    Relative density (water = 1): 1.65-1.67
    Solubility in water: none
    Vapour pressure, Pa at 25C: 0.053
    Octanol/water partition coefficient as log Pow: 3.87-5.44 (estimated)
    ENVIRONMENTAL
    DATA
    Heptachlor is persistent and rather immobile in soil. This substance may be hazardous to the environment; special attention should be given to marine crustacea and young fish which are very sensitive. In the food chain important to humans, bioaccumulation takes place, specifically in fish and birds. It is strongly advised not to let the chemical enter into the environment.
    NOTES
    The technical grade is a waxy solid containing ca. 72% heptachlor and 28% related compounds. All uses of this compound are increasingly restricted. Safe and equally effective alternatives should be preferred. Other melting points: 46-74C for the technical product. Carrier solvents used in commercial formulations may change physical and toxicological properties. Do NOT take working clothes home. Aahepta, Agroceres, Basaklor, Heptagran, Heptamul, Rhodiachlor, Velsicol 104, Drinox, among others are trade names.
    Transport Emergency Card: TEC (R)-61G53b
    ADDITIONAL INFORMATION


    ICSC: 0743 HEPTACHLOR
    © 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.