Endosulfan
Trade and Other Names: Trade or other names for the product include Afidan, Beosit, Cyclodan, Devisulfan, Endocel, Endocide, Endosol, FMC 5462, Hexasulfan, Hildan, Hoe 2671, Insectophene, Malix, Phaser, Thiodan, Thimul, Thifor, and Thionex
Introduction
Endosulfan is a chlorinated hydrocarbon insecticide and acaricide of the cyclodiene subgroup which acts as a poison to a wide variety of insects and mites on contact. Although it may also be used as a wood preservative, it is used primarily on a wide variety of food crops including tea, coffee, fruits, and vegetables, as well as on rice, cereals, maize, sorghum, or other grains. Formulations of endosulfan include emsulsifiable concentrate, wettable powder, ultra-low volume (ULV) liquid, and smoke tablets. It is compatible with many other pesticides and may be found in formulations with dimethoate, malathion, methomyl, monocrotophos, pirimicarb, triazophos, fenoprop, parathion, petroleum oils, and oxine-copper. It is not compatible with alkaline materials. Technical endosulfan is made up of a mixture of two molecular forms (isomers) of endosulfan, the alpha- and beta-isomers. Information presented in this profile refers to this technical product unless otherwise stated.
Formulation: Formulations of endosulfan include emulsifiable concentrate, wettable powder, ultra-low volume (ULV) liquid, and smoke tablets.
Physical Properties:
Appearance: Pure endosulfan is a colorless crystal. Technical grade is a yellow-brown color.
Chemical Name: 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzadioxathiepin 3-oxide
CAS Number: 115-29-7 (alpha-isomer, 959-98-8; beta-isomer, 33213-65-9)
Molecular Weight: 406.96
Water Solubility: 0.32 mg/L @ 22 C
Solubility in Other Solvents: s. in toluene and hexane
Melting Point: Technical material, 70-100 C
Vapor Pressure: 1200 mPa @ 80 C
Partition Coefficient: Not Available
Adsorption Coefficient: 12,400