Specilication:( GB11407-89)
Appearance : light –yellow or pale powder and grain
Melting point ,℃≥ High grade(specification) 173.0
1stGrade (specification) 171.0
2and Grade(specification) 170.0
Ash,% ≤:
High grade(specification) 0.30
1stGrade (specification) 0.30
2and Grade(specification) 0.30
Reduction in weight after heating, % ≤High grade(specification) 0.30
1stGrade (specification) 0.40
2and Grade(specification) 0.50
Screen residue(100 meshes), ≤
High grade(specification) 0.00
1st Grade (specification) 0.10
2and Grade(specification) 0.10
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