Other Name: chloroethyl phosphonic acid; Cerone; Bromeflor; Ethrel; Florel; Prep; Arvest; Flordimex; 2-Chloroethanephosphonic acid; (chloroethyl)phosphonate; chlorethephon; ethephon [chloroethephon]
Molecular Formula: C2H6ClO3P
Molecular Weight: 144.49
Physical and Chemical Properties
Appearance:White or light yellow crystals
Melting point: 74-77 ¡ã C
WHO Table 5, EPA ¦°3. Acute oral LD50 for rats 3030mg a.i./kg. Acute dermal LD50 for rabbits 1560mg a.i./kg. Irritating to skin and eyes. In a 2 years feeding trial, rats receiving <3000 mg/kg/d diet showed no increase in carcinoma. Acute oral LD50 for bobwhite quail 1000mg/kg. Fish LC50 (96 hr) for bluegill sunfish 300mg/l, rainbow trout 350mg/l, daphnia EC50 (48 hrs) >500 mg/l. Non-toxic to bees and earthworm at normal dosage.
Ethephon can modulate plant growth and metabolism by releasing ethylene from root, bloom, fruit, legume and other tissues. It can accelerate maturation for fruit and vegetable. Also used as post-harvest ripening agent.