1.Light brown liquid 2.Plant growth regulator [Name & structure]English name:EthephonTrade name:EthrelEmpirical formula:C2H6ClO3PMolecular weight:144.50Pure products are colorless needle crystal, industrial products are white needle crystal or offwhite ceroid solid, melting point:74-75, relative density: d1.2-1.3, soluble in water, ethanol, aether, slightly soluble in benzene and dichloroethane.