Commercial 1,3-dichioropropene is a mixture of cis- and trans- isomers and 92% pure. It may also be used in admixtures with 1 ,2-dibromoethane (Dorloe) or with 1 ,2dichloropropane (D-D , soil fumigant; Nemex Telone , and ...

Pure methyl parathion is crystalline and white. It is relatively insoluble in water, poorly soluble in petroleum ether and mineral oils, and readily soluble in most organic solvents. Methyl parathion is stable at pH 1-7, ...

The PCBs are chlorinated hydrocarbons that are manufactured commercially by the progressive chlorination of biphenyl in the presence of a suitable catalyst (e.g., iron chloride). Depending on the reaction conditions, the ...