... + C4H5NOS Molecular weight: 149.56 + 115.06 Name: 5-Chloro-2-methyl-3(2H)-isothiazolone with 2-methyl-3 ... 1.19, viscosity (23 °C) 5.0 mPa · s, freezing point-18 ~ 21.5 °C, PH 3.5 ~ 5.0, it is soluble in ... at room temperature for a year, when 50 °C storage half a year, few activity decline, the heat ... liquid, slightly smell, was found no sediment PH 3.0-5.0 Activity content % 1.5 Proportion (d420) 1.15 ...