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Common NameEthephon
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中文通用名乙烯利
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IUPAC2-chloroethylphosphonic acid
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CAS(2-chloroethyl)phosphonic acid
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CAS No.16672-87-0
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Molecular FormulaC2H6ClO3P
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Molecular Structure
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Category
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ActivityPlant Growth Regulator
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PremixThidiazuron+Ethephon
Diuron+Thidiazuron+Ethephon
Diethyl aminoethyl hexanoate+Ethephon
6-benzylamino-purine+Ethephon
Aqueous solution, liquid concentrate.
Premix Parters: cypermethrin; tetradifon;
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Physical PropertiesMolecular weight:144.5; Physical form:Colourless solid; ( tech. is a clear liquid). Density:1.409.02 (20 °C) ( tech.); Melting point:74-75 °C; Vapour pressure:<0.01 mPa (20 °C); Henry constant:<1.55 × 10-9 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP <-2.20 (25 °C, unstated pH); pKa: pKa1 2.5, pKa2 7.2; Solubility:In water c. 1 kg/l (23 °C). Readily soluble in methanol, ethanol, isopropanol, acetone, diethyl ether, and other polar organic solvents. Sparingly soluble in non-polar organic solvents such as benzene and toluene. Insoluble in ke; Stability:Stable in aqueous solutions having pH <5. At higher pH, decomposition occurs with the liberation of ethylene. Sensitive to u.v. irradiation.;
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ToxicologyOral:Acute oral LD50 for rats 3030 mg/ kg ( tech.). Percutaneous:Acute percutaneous LD50 for rabbits 1560 mg/ kg ( tech.). Irritating to skin and eyes. Inhalation: LC50 (4 h) for rats 6.26 mg/l ( tech.).
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Environmental ProfileEcotoxicology:
Algae: EC50 (24-48 h) for Chlorella vulgaris 32 mg/l.Bees:Not toxic to bees.Birds:Acute oral LD50 for bobwhite quail 1072 mg/50 (8 d) for bobwhite quail >7000 ppm in diet (tech.50 (48 h) 577.4 mg/l.Fish: LC50(96 h) for carp >140, rainbow trout 720 mg/l ( tech.).Worms:Not toxic to earthworms.Other aquatic spp.:Low toxicity.
Environmental fate:
Animals:In animals, ethephon is rapidly excreted intact via the urine, and as ethylene via the expired air.Soil:Rapidly degraded in soil, and strongly adsorbed; unlikely to leach.Plant:In plants, ethephon rapidly undergoes degradation to ethylene." -
Transport InformationSignal Word:DANGER; Hazard Class:Ib(Highly hazardous)
Porduct NewsMore
Nufarm launches bacteriostatic growth regulator in Brazil
Canada proposes to restrict some use of ethephon
Ethephon ranked 1st in biopesticide export in China
Ethephon is on rising demand in China
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