Toxaphene

Toxaphene was an insecticide used primarily for cotton in the southern United States during the late 1960s and the 1970s. Toxaphene is a mixture of over 670 different chemicals and is produced by reacting chlorine gas with camphene. It can be most commonly found as a yellow to amber waxy solid.

Toxaphene
Names
Other names
Chlorocamphene, Octachlorocamphene, Polychlorocamphene, Chlorinated camphene
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.029.348
EC Number
  • 232-283-3
KEGG
UNII
  • InChI=1S/C10H10Cl8/c1-7(2)3(6(13)14)8(15)4(11)5(12)9(7,16)10(8,17)18/h3-6H,1-2H3
    Key: HRBUJQUHXGOSQW-UHFFFAOYSA-N
  • C=C1C(C2(C(C(C1(C2(Cl)Cl)Cl)Cl)Cl)Cl)(CCl)CCl
Properties
Density 1.65 g/cm3
Melting point 65 to 90 °C (149 to 194 °F; 338 to 363 K)
Boiling point decomposition at 155 °C (311 °F; 428 K)
0.0003% (20°C)
Vapor pressure 0.4 mmHg (25°C)
Hazards
GHS labelling:
Danger
H301, H312, H315, H335, H351, H410
P261, P273, P280, P301+P310, P501
Flash point noncombustible
Lethal dose or concentration (LD, LC):
75 mg/kg (oral, rabbit)
112 mg/kg (oral, mouse)
250 mg/kg (oral, guinea pig)
50 mg/kg (oral, rat)
2000 mg/m3 (mouse, 2 hr)
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 0.5 mg/m3 [skin]
REL (Recommended)
Ca [skin]
IDLH (Immediate danger)
200 mg/m3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Toxaphene was banned in the United States in 1990 and was banned globally by the 2001 Stockholm Convention on Persistent Organic Pollutants. It is a very persistent chemical that can remain in the environment for 1–14 years without degrading, particularly in the soil.

Testing performed on animals, mostly rats and mice, has demonstrated that toxaphene is harmful to animals. Exposure to toxaphene has proven to stimulate the central nervous system, as well as induce morphological changes in the thyroid, liver, and kidneys.

Toxaphene has been shown to cause adverse health effects in humans. The main sources of exposure are through food, drinking water, breathing contaminated air, and direct contact with contaminated soil. Exposure to high levels of toxaphene can cause damage to the lungs, nervous system, liver, kidneys, and in extreme cases, may even cause death. It is thought to be a potential carcinogen in humans, though this has not yet been proven.

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