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Chlordane is a viscous, amber-colored liquid. Technical grade chlordane is a mixture of many structurally related compounds including trans-chlordane, cis-chlordane, -chlordene, heptachlor, and trans-nonachlor. 14,15 Chlordane was used as a broad-spectrum pesticide in the United States from 1948 to 1988. Its uses included termite control in homes; pest control on agricultural crops such as maize and citrus, on home lawns, gardens, turf, and ornamental plants. Chlordane is a persistent organochlorine insecticide. It kills insects when ingested and on contact. Formulations include dusts, emulsifi able concentrates, granules, oil solutions, and wettable powder.

off-white powder

Insecticide, fumigant.

A possible carcinogen. Toxic by ingestion, inhalation, and skin absorption. Liver damage.

Exposures to chlordane cause adverse health effects and poisoning to animals and humans. The acute oral LD50 values of technical grade chlordane for the rat range from 137 to 590 mg/kg and acute dermal LD50 for the rabbit is 1720 mg/kg. Signs of acute chlordane intoxication include ataxia, convulsions, and cyanosis followed by death due to respiratory failure. Rats treated by gavage with 100 mg/kg once a day for 4 days had increased absolute liver weights; fatty infi ltration of the liver; and increased serum triglycerides, creatine phosphokinase, and lactic acid dehydrogenase. Sheep treated by stomach tube with 500 mg/kg showed signs of intoxication, but recovered fully within 5–6 days; a dose of 1000 mg/kg resulted in death after 48 h. Ingestion of chlordane induces vomiting, dry cough, agitation and restlessness, hemorrhagic gastritis, bronchopneumonia, muscle twitching, convulsions, and death among humans. Non-lethal, but accidental poisoning of children has resulted in convulsions, excitability, loss of coordination, dyspnea, and tachycardia. Recovery, however, was complete. Ingestion of chlordane contaminated water (1.2 g/L) caused symptoms of gastrointestinal and neurological disorders. Chronic inhalation of chlordane produced symptoms of poisoning that included, but were not limited to, sinusitis, bronchitis, dermatitis, neuritis, migraine, gastrointestinal distress, fatigue, memory defi cits, personality changes, Exposures to chlordane cause adverse health effects and poisoning to animals and humans. The acute oral LD50 values of technical grade chlordane for the rat range from 137 to 590 mg/kg and acute dermal LD50 for the rabbit is 1720 mg/kg. Signs of acute chlordane intoxication include ataxia, convulsions, and cyanosis followed by death due to respiratory failure. Rats treated by gavage with 100 mg/kg once a day for 4 days had increased absolute liver weights; fatty infi ltration of the liver; and increased serum triglycerides, creatine phosphokinase, and lactic acid dehydrogenase. Sheep treated by stomach tube with 500 mg/kg showed signs of intoxication, but recovered fully within 5–6 days; a dose of 1000 mg/kg resulted in death after 48 h. Ingestion of chlordane induces vomiting, dry cough, agitation and restlessness, hemorrhagic gastritis, bronchopneumonia, muscle twitching, convulsions, and death among humans. Non-lethal, but accidental poisoning of children has resulted in convulsions, excitability, loss of coordination, dyspnea, and tachycardia. Recovery, however, was complete. Ingestion of chlordane contaminated water (1.2 g/L) caused symptoms of gastrointestinal and neurological disorders. Chronic inhalation of chlordane produced symptoms of poisoning that included, but were not limited to, sinusitis, bronchitis, dermatitis, neuritis, migraine, gastrointestinal distress, fatigue, memory defi cits, personality changes, decreased attention span, numbness or paresthesias, blood dyscrasias, disorientation, loss of coordination, dry eyes, and seizures. Chlordane-treated laboratory rats showed blood diseases, including aplastic anemia and acute leukemia

Chlordane is a broad spectrum insecticide of the group of polycyclic chlorinated hydrocarbons called cyclodiene insecticides. Chlordane has been used extensively since the 1950s for termite control; as an insecticide for homes and gardens; and as a control for soil insects during the production of crops, such as corn. Both the uses and the production volume of chlordane have decreased extensively since the issuance of a registration suspension notice for all food crops and home and garden uses of chlordane by the United States Environmental Protection Agency. However, significant commercial use of chlordane for termite control continues. Special groups at risk include children as a result of milk consumed; fishermen and their families because of the high consumption of fish and shellfish, especially freshwater fish; persons living downwind from treated fields; and persons living in houses treated with chlordane pesticide control agents.

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Speed in removing material from skin is of extreme importance. Shampoo hair promptly if contaminated. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.

UN2996 Organochlorine pesticides, liquid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

Contact with strong oxidizers may cause fire and explosions. High heat and contact with alkaline solutions cause decomposition with the production of toxic fumes including chlorine, phosgene, hydrogen chloride. Attacks iron, zinc, plastics, rubber, and coatings.

Chlordane is dehydrochlorinated in alkali to form “nontoxic” products, a reaction catalyzed by traces of iron, but the reaction is slow. The environmental hazards of the products are uncertain. Chlordane is completely dechlorinated by sodium in isopropyl alcohol. The UN Recommends incineration methods for disposal of chlordane. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.

Colorless to amber to yellowish-brown, viscous liquid. Technical formulations impart an aromatic, slight pungent odor similar to chlorine

ChEBI: Chlordane is a cyclodiene organochlorine insecticide. It has a role as a GABA-gated chloride channel antagonist and a persistent organic pollutant. It derives from a hydride of an indene.

Insecticide: Not approved for use in EU countries. Since 1988, the use and commercial production of chlordane (except for export) has been prohibited in the United States and other countries. The only commercial use still permitted is for fire ant control in power transformers. Chlordane is a broad-spectrum insecticide of the group of polycyclic chlorinated hydrocarbons called cyclodiene insecticides. Chlordane has been used extensively since the 1950s for termite control, as an insecticide for homes and gardens, and as a control for soil insects during the production of crops such as corn. Both the uses and the production volume of chlordane have decreased extensively since the issuance of a registration suspension notice for all food crops and home and garden uses of chlordane by the U.S. Environmental Protection Agency. However, significant commercial use of chlordane for termite control continues. Special groups at risk include children as a result of milk consumed; fishermen and their families because of the high consumption of fish and shellfish, especially freshwater fish; persons living downwind from treated fields; and persons living in houses treated with chlordane pesticide control agents.

A SPON-CHLORDANE®; BELT®; CD 68®; CHLORINDAN®; CHLOR KIL®; CHLORODANE®; CORODANE®; CHLORTOX®; DOWCHLOR®[C]; DOW-KLOR®[C]; GOLD CREST®[C]; KILEX LINDANE®; HCS 3260®; KYPCHLOR®; M 140®; M 410®; NIRAN®; OCTACHLOR®; OKTATERR®; OMS 1437®; ORTHO-KLOR®[C]; SD 5532®; SHELL SD-5532®[C]; SYNKLOR®; TAT®; TAT CHLOR® 4; TERMEX®; TOPICHLOR® 20; TOPICLOR®; TOXICHLOR®; VELSICOL® 1068[C]

IARC has concluded that there is inadequate evidence for carcinogenicity of chlordane to humans and sufficient evidence for its carcinogenicity to animals.
Chlordane was not mutagenic to bacteria.

Biological. In four successive 7-day incubation periods, chlordane (5 and 10 mg/L) was recalcitrant to degradation in a settled domestic wastewater inoculum (Tabak et al., 1981).
Soil. The actinomycete, Nocardiopsis sp., isolated from soil extensively degraded pure cis- and trans-chlordane to dichlorochlordene, oxy-chlordane, heptachlor, heptachlor endoepoxide, chlordene chlorohydrin and 3-hydroxy-trans-chlordane. Oxychlordane is slowly degraded to 1-hydroxy-2-chlorochlordene (Beeman and Matsumura, 1981). The reported half-life in soil is approximately one year (Hartley and Kidd, 1987). The percentage of chlordane remaining in a Congaree sandy loam soil after 14 years was 40% (Nash and Woolson, 1967).
Chlordane did not degrade in settled domestic wastewater after 28 days (Tabak et al., 1981).
Plant. Alfalfa plants were sprayed with chlordane at a rate of 1 lb/acre. After 21 days, 95% of the residues had volatilized (Dorough et al., 1972).
Photolytic. Chlordane should not undergo direct photolysis since it does not absorb UV light at wavelengths greater than 280 nm (Gore et al., 1971).
Chemical/Physical. In an alkaline medium or solvent, carrier, diluent or emulsifier having an alkaline reaction, chlorine will be released (Windholz et al., 1983). Technical grade chlordane passed over a 5% platinum catalyst at 200°C resulted in the formation of tetrahydrodicyclopentadiene (Musoke et al., 1982).
Chlordane (1 mM) in methyl alcohol (30 mL) underwent dechlorination in the presence of nickel boride (generated by the reaction of nickel chloride and sodium borohydride).
The catalytic dechlorination of chlordane by this method yielded a pentachloro derivative as the major product having the empirical formula C10H9Cl5 (Dennis and Cooper, 1976).
Chlordane is subject to hydrolysis via the nucleophilic substitution of chlorine by hydroxyl ions to yield 2,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro-4,7-methano-1Hindene which is resistant to further hydrolysis (Kollig, 1993). The hydrolysis half-life at pH 7 and 25°C was estimated to be >197,000 years (Ellington et al., 1988).
Emits very toxic fumes of chlorides when heated to decomposition (Lewis, 1990)

Chlordane undergoes a variety of metabolic processes including oxidation, reductive dechlorination, hydrolysis and epoxidation. These reactions afford products involving alteration of the cyclopentane ring; the norbornyl moiety generally remains unaffected except in photochemical reactions when bridged compounds may be formed or dechlorination may occur. Hydroxylation at position 3 is effected by microsomal mixed function oxidases to form 3-hydroxychlordane (12). Dehydration of this compound gives 1,2-dichlorochlordene (13), a key metabolic intermediate in the formation of oxychlordane and other metabolites. A second metabolic pathway involves dehydrochlorination to form heptachlor (2). Dechlorination affords 1-chlorodihydrochlordene (7). Hydrolysis gives 1-chloro-2-hydroxychlordene chlorohydrin (6) which may be metabolised to monochlorodihydroxy and trihydroxy derivatives of dihydrochlordene (Nomeir and Hajjar, 1987).

Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working withChlordane you should be trained on its proper handling andstorage. Chlordane must be stored to avoid contact withstrong oxidizers (such as perchlorates, peroxides, permanganates, chlorates, and nitrates), since violent reactions occur.Store in tightly closed containers in a cool, well-ventilatedarea away from heat. A regulated, marked area should beestablished where this chemical is handled, used, or storedin compliance with OSHA Standard 1910.1045.

Acetone-sensitised photolysis of cis-chlordane (1) gave bridged derivatives to which cage-like structures (19a or 19b) have been assigned. The isomeric trans-chlordane (1) failed to yield bridged products because the double bond in these compounds interacts with the endo-chlorine atom (Fischler and Korte, 1969). However, it was later reported that with transchlordane (l),bridging did occur forming 20 involving carbon-1 which has a non-interfering exo-chlorine atom.
Unsensitised photolysis of trans-chlordane (1) in aqueous organic solvents at wavelengths less than 300 nm gave two isomeric monodechlorinated products (21a and 2) and ultimately the bis-dechlorination product (Vollner et al. 1969; Ivie et al. 1972). When cis-chlordane (1) was irradiated as a solid film, up to 70% was converted after 16-20 hours irradiation into a mixture of products, more than half of which were bridged isomers (depending on conditions, the dechlorinated compounds may also form bridged compounds). These transformations are shown in Scheme 1.
Chlordane is decomposed by alkalis with the loss of chlorine.

Technical chlordane is a viscous, amber liquid (bp 175 ?C/267 Pa, vp 1.3 mPa at 25 ?C) soluble in water to about 9 μg/L. It has rat LD₅₀s of 335, 430 (oral), and 840, 690 (dermal) mg/kg. Technical chlordane contains about 60% of the isomers and 10–20% of heptachlor.