No.

Item

Specification

Testing method

1

Appearance

White granules to powder

Eye measurement

2

Color of solution(Pt-Co#)

≤ 40

GB 605-77

3

Melting point

128°C~ 134 °C

QB/YZWY-02

4

Acid number

623mgKOH/g~630mgKOH/g

GB/T 14827-93

5

Ash content(wt%)

≤ 0.3 %

GB 7531-87

6

Iron content(mg/Kg)

≤ 10.0 µ g/g

GB 3049-86

7

Sulfate content(wt%)

≤ 0.3 %

QB/YZWY-02

8

Ammonium content(wt%)

≤ 0.03 %

QB/YZWY-02

9

Heating loss(wt%)

≤ 0.4 %

GB 12010.4-89

10

Purity(wt%)

≥ 99.0 %

QB/YZWY-02