Paraquat

CAS RN: 4685-14-7

Other Properties

Colorless crystalline solid. Stable except under alkaline conditions. No measurable vapor pressure. Dcomposes at approximately 300 deg C. Sparingly soluble in lower alcohols; insoluble in hydrocarbons /Paraquat dichloride/
Conversion factors: 1 mg/kg = 131 ppm; 1 ppm = 7.61 mg/cu m
VP: Approximately 0 mm at 20 deg C
Vapor pressure of salts is very low, below 1X10-7 mm Hg /Paraquat salts/
White crystalline solid /Paraquat dichloride & di(methyl sulfate) salts/
Dark red solution /Technical paraquat/
MP: decomposes at 340 deg C; log Kow = -4.50 (20 deg C); Density: 1.24-1.26 at 20 deg C; Sollubility: In water, 6.2X10+5 mg/L at 25 deg C; VP: less than 7.5X10-8 mm Hg (25 deg C) /Paraquat dichloride/
Colorless crystals; mp: 300 deg C (decomposes); very soluble in water, slightly soluble in lower alcohols. Insoluble in hydrocarbons. Hydrolyzed by alkali. Inactivated by inert clays and anionic surfactants; corrosive to metal; non-volatile /Paraquat dichloride/
Yellow solid. Very air-senstive needles from MeOH/Me2CO. MW 257.18. Insoluble in nonpolar solvents /Paraquat dichloride/
Colorless hygroscopic crystals or white to yellow hygroscopic crystalline powder. Water solution of paraquat chloride is dark red. MP: 175-180 deg C, BP: 300 deg C (decomposes), density: 1.25. Solubility in water: 70 g/100 mL at 20 deg C /Paraquat dihydride/
Yellow solid. /Paraquat bismethyl sulfide/
A solid. MP: 300 deg C (approximate decomposition) /Paraquat dimethyl sulfate/
Henry's Law constant: <3.0X10-14 atm-cu m/mole at 25 deg C (est)
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