Physical Properties
Colorless crystals; mixture of two diastereoisomeric enantiomer pairs (A.B). Vapor pressure A: 0.22 nPa, B: 2.5 nPa, at 20°C. Stable under normal storage conditions. Insoluble in aliphatic hydrocarbons. Very slightly soluble in isopropanol, toluene, methylene chloride, and cyclohexanone.
Molecular weight:337.4; Physical form:White powder; (tech., white to tan crystals with a mild odour). Density:1.16 (20 °C); Composition:Bitertanol is a mixture of 2 diastereoisomers. Enantiomer A: (1R,2S) + (1S,2R); enantiomer B: (1R,2R) + (1S,2S) in the ratio A:B 8:2. Melting point:138.6 °C (A), 147.1 °C (B), 118 °C (eutectic of A and B); Vapour pressure:2.2 × 10-7 mPa (A); 2.5 × 10-6 mPa (B) (both 20 °C); Henry constant:2 × 10-8 Pa m3 mol-1 (A); 5 × 10-7 Pa m3 mol-1 (B) (both 20 °C, calc.); Partition coefficient(n-octanol and water):logP = 4.1 (A), 4.15 (B) (both 20 °C); Solubility:In water 2.7 (A), 1.1 (B), 3.8 (eutectic) (all in mg/l, 20 °C, not affected by pH). In dichloromethane >250, isopropanol 67, xylene 18, n-octanol 53 (all for sum of A and B, in g/l, 20 °C).; Stability:Stable in neutral, acidic, and alkaline media; DT50 at 25 °C >1 y ( 4, 7 and 9).;