ITEM
|
FIRST GRADE
|
Appearance
|
Greyish white or light yellow powder
|
Purity,%, ≥
|
96
|
Melting point, ℃≥
|
98.0
|
Heating loss, % ≤
|
0.30
|
Ash content, % ≤
|
0.30
|
Residue(150μm), % ≤
|
0.05
|
Storage: It may be descendently decomposed during storage, so should be kept in low temperature off heat and moisture.