85%Ethephon

Features: 1) Common name: ethephon 2) Chemical name: 2-chloroethylphosphonic acid 3) Molecular formula: C2H6ClO3P 4) Molecular weight: 144.5 5) CAS No.: [16672-80-07] Physical-chemical properties: 1) Appearance: colorless solid 2) Melting point: 74-75oC 3) Vapor pressure: c. 265oC (decomp.) 4) Boiling point range: <0.01MPa (20oC) 5) Solubility: readily soluble in water, 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 kerosene and diesel oil. 6) Stability: Stable in aqueous solutions having pH <5. At higher pH, decomposition occurs with the liberation of ethylene. Sensitive to u.v. irradiation. 7) Technical specification: 91%, 85%, 80% tech and 70%, 75% liquid for tech. 8) Formulation: 1000g/L, 800g/L, 720g/L, 660g/L, 480g/L and 40% (W/W) SL for formulation 10%, 5% and 2.5% for rubber stimulant 9) Analysis: GC (HG 2311-92) or analysis by measuring ethylene produced on treatment with concentrated alkali Packing: 200L, 120L and 25L plastic drum. Applications: 1) Action: plant growth regulator with systemic properties. It penetrates into plant tissue, and is decomposed to ethylene; which affects growth processes. 2) Uses: widely used to accelerate ripening of fruits, tomato, sugar beet, coffee, etc; to increase the tillering of wheat and rice; to prevent lodging in rice, maize and flax; to accelerate boll opening and defoliation in cotton; to hasten the yellowing of mature tobacco leaves; to stimulate latex flow in rubber trees, and resin flow in pine trees; to stimulate early uniform hull split in walnuts; etc. Toxicology: 1) Oral: acute oral LD50 for rats 4229mg/kg 2) Skin and eyes: acute percutaneous LD50 for rabbits 5730mg/kg. Irritating to skin and eyes 3) Inhalation: LC50 (4h) for rats 6.26mg/L 4) NOEL: (2y) for rats 3000ppm diet 5) ADI: (JMPR) 0.05mg/kg b.w. 6) Birds: acute oral LD50 for bobwhite quails 1072mg/kg 7) Fish: LC50 (96h) for carp >140, rainbow trout 720mg/L 8) Bees: not toxic to bees 9) Daphnia EC50 (48h) 577.4mg/L