Amorphous phosphite compound and method for its production

摘要

An amorphous compound of the formula (1):
wherein the temperature showing an endothermic peak by differential scanning calorimetry (DSC) is 40 to 80°C and the solution rate into n-hexane at 25°C in the following test system is 1.5 mg/sec or more. <Test system regarding solution rate> At 25°C, 1 g of a specimen is charged into a vessel containing 50 g of n-hexane (capacity: 100 ml, outer diameter: 55 mm, height: 70 mm), a 38 mm diameter fan type stirring blade is rotated at a revolution of 100 rpm, and the time until dissolution of the specimen is measured.