Item

Specification

Appearance

White Powder Form

White Needle Form

Clear, light yellow Liquid 1#

Clear, light yellow Liquid 2#

Active ingredient (%)

≥92

≥93

≥95

≥92

≥93

≥95

Total Solid matter(%) ≥28

Total Solid matter(%) ≥35

Petroleum ether soluble substances (%)

≤1.5

≤1.5

≤1.5

≤1.5

≤1.5

≤1.5

≤0.5

≤0.3

Inorganic salts (NaCl+Na2SO4) (%)

≤5.5

≤4.5

≤2.5

≤4.5

≤3.5

≤2.0

≤2.0

≤2.0

Water (%)

≤2.5

≤2.5

≤2.5

≤3.5

≤3.5

≤3.0

-

-

pH (1% aq. Solution 25°C)

7.5~9.5

7.5~9.5

7.5~9.5

7.5~9.5

7.5~9.5

7.5~9.5

7.5~9.5

7.5~9.5

Whiteness (WG)

≥90

≥90

≥90

≥90

≥90

≥90

-

-

Color             (Hazen, 5% a.m. solution)

-

-

-

-

-

-

≤50

≤50