What is HCH used for?
Summary: Hexachlorocyclohexane (HCH) is a manufactured chemical that exists in eight chemical forms called isomers. One of these forms, gamma-HCH (or γ-HCH, commonly called lindane) is produced and used as an insecticide on fruit, vegetables, and forest crops.
What is Gamma content of lindane?
Lindane is the gamma isomer of hexachlorocyclohexane (“γ-HCH”). In addition to the issue of lindane pollution, some concerns are related to the other isomers of HCH, namely alpha-HCH and beta-HCH, which are notably more toxic than lindane, lack its insecticidal properties, and are byproducts of lindane production.
What is c6h6cl6?
Benzene hexachloride structure – C6H6Cl C6H6Cl6 is the chemical formula of Benzene hexachloride. The Benzene hexachloride molecule is a gamma-isomer which is expected to be a human carcinogen.
Is lindane still used?
By 2001 to 2002, all lindane uses were voluntarily cancelled except the six lindane seed treatment uses that are being addressed at this time (barley, corn, oats, rye, sorghum, and wheat). Lindane primarily affects the nervous system causing neurotoxic effects.
What is HCH in the body?
Highlights. Exposure to hexachlorocyclohexane (HCH) happens mostly from eating contaminated food or by breathing contaminated air in the workplace. Exposure to high levels of HCH can cause blood disorders, dizziness, headaches, seizures, and changes in the levels of sex hormones.
Is HCH banned?
Production of tech-HCH in the U.S. was banned in 1976, but the compound may still be used in other countries [1].
Why is lindane no longer recommended?
Lindane carries a boxed warning for neurotoxicity and possible seizures and has been banned in California since 2002. Additionally, 52 countries have banned the use of lindane. As a result, it is not recommended for the treatment of head lice or scabies.
How do you use gamma benzene?
Wash your hands and the affected area and gently dry. Put a thin layer of Gamma Benzene Hexachloride cream on the affected skin, using your fingertips. Apply it to the entire area affected by acne, not just each spot. Remember, it is important to wash your hands before and after applying Gamma Benzene Hexachloride.
What are BHC and DDT?
DDT = Dichloro diphenyl trichloroethane. BHC = Benzene hexachloride.
Is lindane toxic?
Exposure to lindane may occur from eating contaminated food or by breathing air contaminated during formulation or use. Lindane is quite toxic to humans. The acute (short-term) effects of lindane through inhalation exposure in humans consist of irritation of the nose and throat and effects on the blood.
When was lindane banned in the US?
In 2002, California banned pharmaceutical use of lindane because of concerns about water quality, as lindane treatment for head lice and scabies was found to be a significant factor adversely affecting wastewater quality.
Where is lindane banned?
Lindane has been used on U.S. crops since 1950. The EPA heavily restricted it in 1983, limiting its use to grain seeds to prevent pests from eating the plants. It is banned in the European Union, Japan and several other Asian countries, South Africa, and much of Latin and South America.
What is the name of HCH?
Hexachlorocyclohexane (HCH) is also known as benzene hexachloride (BHC). It is a synthetic chemical.
What is HCH called?
Hexachlorocyclohexane (HCH), formally known as benzene hexachloride (BHC), is a synthetic chemical that exists in eight chemical forms called isomers. The different isomers are named according to the position of the hydrogen atoms in the structure of the chemical.
Is lindane a neurotoxin?
However, lindane has several serious neurotoxic effects, ranging from dizziness, headaches and paresthesia, to seizures and even death.
How long does it take to see symptoms of scabies?
When a person is infested with scabies mites for the first time, symptoms usually do not appear for up to two months (2-6 weeks) after being infested. A person who is infested can still spread scabies during this time even though they do not have symptoms.
What is the difference between pediculosis and scabies?
Lice are small insects that live on the skin. They are often connected to hair on the scalp or in the pubic area. When you have lice, it is called pediculosis. Scabies is a condition caused by mites, which are tiny, insect-like animals that dig under the skin.
What is BHC and malathion?
malathion is an Organothiophosphate compound. 2. DDT is an organic halogen compound. 3. BHC organic benzene hexachloride compound.
What is the specific antidote for organochlorine exposure?
No specific antidotes are available for organochlorine poisoning. Decontamination may be indicated to prevent continued absorption, as well as exposure of health care personnel.
What is gamma HCH used for?
Hexachlorocyclohexane (HCH) is a manufactured chemical that exists in eight chemical forms called isomers. One of these forms, gamma-HCH (or γ-HCH, commonly called lindane) is produced and used as an insecticide on fruit, vegetables, and forest crops.
What is the toxicity of γ-HCH?
γ-HCH is also commonly known as lindane. Technical-grade HCH consists of at least five isomers (approximately 60–70% α-HCH, 5– 12% β-HCH, 10–15% γ-HCH, 6–10% δ-HCH, and 3–4% ε-HCH). The toxicity of the isomers varies. With respect to acute exposure, γ-HCH is the most toxic, followed by α-, δ-, and β-HCH.
What are the levels of significant exposure to gamma-hexachlorocyclohexane (lindane)?
Table 3-2 Levels of Significant Exposure to Gamma-hexachlorocyclohexane (lindane) – Oral (continued) a Figure Species (Strain) Exposure/ Duration/ Frequency (Route) NOAEL (mg/kg/day) Less Serious (mg/kg/day) LOAEL Serious (mg/kg/day) Reference Chemical Form 32 (Wistar) once (GO) 20
What are the levels of exposure to alpha-beta and Delta-grade HCH?
Table 3-3 Levels of Significant Exposure to Alpha-, Beta-, Delta-, And Tech-grade HCH – Oral (continued) a Key to Species Figure (Strain) 55 (Swiss) 56 Mouse (DDY, ICR, DBA/2, C57BL/6, C3H/He) 57 Mouse (Swiss) 58 (HPB) 59 (DD) Exposure/ LOAEL Duration/ Frequency (Route) System NOAEL (mg/kg/day) Less Serious Serious