... 0.50Ash % ≤ 0.05 0.10Tinctorial strengthof phthalic resins ≤ 1 2 4melting point/°C ≥ 250 -------- --------------- ItemsSpecificationHigh gradeFirst gradeQualified grade≥Di- ... . % ,min98.095.090.0(Hydroxyl),wt. % ,min.48.548.047.0(Ash), wt,wt. % ,max.0.050.100.10(Moisture),wt. % ,max0 ... .500.500.50(PhthalicColor)(Fe,Co,Cu) max1222. Other informations ...