Specilication:( GB11408-89)
Appearance : White or light – yellow powder and grain
Melting point ,℃≥ High grade(specification) 170.0
1st Grade (specification) 165.0
2and Grade(specification) 160.0
Ash,% ≤: High grade(specification) 0.30
1st Grade (specification) 0.50
2and Grade(specification) 0.70
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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