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Ethephon

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(CAS#: 16672-87-0)

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Chemical Name: 2-chloroethylphosphonic acid

Other Name: chloroethyl phosphonic acid; Cerone; Bromeflor; Ethrel; Florel; Prep; Arvest; Flordimex; 2-Chloroethanephosphonic acid; (chloroethyl)phosphonate; chlorethephon; ethephon [chloroethephon]

Physical Properties:

Molecular Formula: C2H6ClO3P

Molecular Weight: 144.49

Structure:

Physical and Chemical Properties

Appearance:White or light yellow crystals

Melting point: 74-77 C

Toxicology:

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.


Application:

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.