Cynor Laboratories

Ethylene dichloride (CH₂CICH₂CI) also called 1,2-dichloroethane, ethylene chloride or sym-dichloroethane, is a colourless liquid. The vapour is not flammable or explosive, and is denser than air. It is also used as a solvent and as a precursor of polyvinyl chloride.

In organic chemistry, xylene or xylol (from Greek  ξύλον (xylon) 'wood';^[1][2] IUPAC name: dimethylbenzene) are any of three organic compounds with the formula (CH3)2C6H4. They are derived from the substitution of two hydrogen atoms with methyl groups in a benzene ring; which hydrogens are substituted determines which of three structural isomers results. It is a colorless, flammable, slightly greasy liquid of great industrial value.^[3]