ITEM
|
FIRST GRADE
|
QUALIFIED GRADE
|
Appearance
|
light yellow or brown-yellow powder
|
|
Purity, %≥
|
96
|
95
|
Melting point, ℃≥
|
98.0
|
96.0
|
Heating loss, % ≤
|
0.40
|
0.50
|
Ash content, % ≤
|
0.30
|
0.40
|
Free MBTS , % ≤
|
0.50
|
0.50
|
Package: 25kg in kraft paper bag with PE bag inside. Or as customer’s request.