What is 666 pesticide?

The component of pesticide "666" is hexachlorocyclohexane, which is a saturated compound formed by replacing a hydrogen atom on each carbon atom of cyclohexane with a chlorine atom.

BHC has contact, fumigation and stomach toxicity to insects, among which γ isomer (also known as lindane) has the highest insecticidal effect, followed by α isomer, δ isomer and β isomer, with extremely low efficiency. Hexachlorobenzene is stable to acid and easy to decompose in alkaline solution or in the presence of zinc, iron and tin. If it is wet or exposed to the sun for a long time, it will fail. This product is harmful and toxic to the environment.

BHC is stable and difficult to decompose, which directly pollutes crops. At the same time, pesticides remain in water and soil and enter the human body through the food chain, but the human body cannot excrete them through metabolism. If it accumulates to a certain extent, it will poison people.

Extended data:

The diffusion of bhc in the environment has several forms, such as dissolution, suspension, volatilization, sedimentation and infiltration. The research shows that at 25℃; The solubility of α-HCH in water is 65438 0630 μ g/L, β-HCH is 700 μ g/L, γ-HCH is 7900 μ g/L, and δ-HCH is 265438 0300 μ g/L. ..

Pesticides entering the water environment can be adsorbed by suspended substances (including soil, organic particles and plankton) in the water; Pesticides entering the surface of water and soil can also enter the surface atmosphere by volatilization, and particulate matter or gaseous pesticides in the air can be carried to a certain distance with the dust in the airflow and settled in the sediment environment; Pesticides in soil can also penetrate from the upper soil to the lower soil through infiltration, thus polluting groundwater.

Baidu encyclopedia-666

Baidu Encyclopedia-Lindane (γ-Hexachlorocyclohexane)