Ethephon Other chemical names: Dichloethyl phosphonic acid, dichloethane phosphonic acid, cepa, cepha, camposan, cerone, florel, ethrel. Specification: Commodity Specification Ethephon 1.25%ethephon 2.5% ethephon 5% Purity1.25% min2.5% min5% min Pigment0.02% max0.02% max0.02% max Colorant1.6 max1.6 max1.6 max Thickener substance5% max5% max5% max Dosage: Depend on tap schedule, style, time and the age of rubber tree ethephon 1.25% may be used around 0.5g û 0.7g/tree/time enough. ethephon 2.5% may be used around 0.5g û 1g/tree/time enough. ethephon 5% may be used around 0.7g û 1g/tree/time enough. Packing: Ethephon will be packed as the most suitable of customerÆs requires as the follows: ò0.5 kg/bottle ò1 kg/bottle ò20 kgs/polycan ò25 kgs/polycan 0, 5kg/jar; 1kg/jar; 25kgs/can