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HEPTACHLORICSC: 0743
July 2003
CAS #: 76-44-81,4,5,6,7,8,8-Heptachloro-3a,4,7,7a-tetrahydro-4,7-methanoindene
1,4,5,6,7,8,8-Heptachloro-3a,4,7,7a-tetrahydro-4,7-methano-1H-indene
3,4,5,6,8,8a-Heptachlorodicyclopentadiene
UN #: 2761
EINECS #: 200-962-3

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION 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, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Convulsions. Tremor.  Use local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin MAY BE ABSORBED! See Inhalation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention . 
Eyes   Wear 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 refer for medical attention. 
Ingestion See Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Give a slurry of activated charcoal in water to drink. Rest. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. If appropriate, moisten first to prevent dusting. Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: II 

STORAGE
Provision to contain effluent from fire extinguishing. Separated from strong oxidants, metals and food and feedstuffs. Well closed. Keep in a well-ventilated room. Dry. Store in an area without drain or sewer access. 
PACKAGING
Do not transport with food and feedstuffs.
Severe marine pollutant. 
HEPTACHLOR ICSC: 0743
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALS OR TAN WAXY SOLID WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes above 160°C . This produces toxic fumes including hydrogen chloride. Reacts with strong oxidants. Attacks metals. 

Formula: C10H5Cl7
Molecular mass: 373.3
Decomposes at 160°C
Melting point: 95-96°C
Density: 1.6 g/cm³
Solubility in water: none
Vapour pressure, Pa at 25°C: 0.053
Octanol/water partition coefficient as log Pow: 5.27/5.44  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance may cause effects on the central nervous system. 

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

Effects of long-term or repeated exposure
The substance may have effects on the liver. This substance is possibly carcinogenic to humans. 


Occupational exposure limits
TLV: 0.05 mg/m3, ppm, as TWA; (skin); A3 (confirmed animal carcinogen with unknown relevance to humans).
MAK: (inhalable fraction): 0.05 mg/m3; peak limitation category: II(8); carcinogen category: 4; pregnancy risk group: D 

ENVIRONMENT
The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur along the food chain, for example in fish and milk. The substance may cause long-term effects in the aquatic environment. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal. 

NOTES
Other melting points: 46-74°C for the technical product.
Carrier solvents used in commercial formulations may change physical and toxicological properties.
Do NOT take working clothes home.
Depending on the degree of exposure, periodic medical examination is suggested. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: T, N; R: 24/25-33-40-50/53; S: (1/2)-36/37-45-60-61 

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    See Also:
       Toxicological Abbreviations
       Heptachlor (EHC 38, 1984)
       Heptachlor (HSG 14, 1988)
       Heptachlor (PIM 578)
       Heptachlor (FAO Meeting Report PL/1965/10/1)
       Heptachlor (FAO/PL:CP/15)
       Heptachlor (FAO/PL:1967/M/11/1)
       Heptachlor (FAO/PL:1968/M/9/1)
       Heptachlor (FAO/PL:1969/M/17/1)
       Heptachlor (AGP:1970/M/12/1)
       Heptachlor (WHO Pesticide Residues Series 4)
       Heptachlor (WHO Pesticide Residues Series 5)
       Heptachlor (Pesticide residues in food: 1991 evaluations Part II Toxicology)
       Heptachlor (CICADS 70, 2006)