Tianjin Beilaixing Chemical Products Co., Ltd

Item

Index

B301

B302

B311

Top grade

First grade

Qualified products

Top grade

First grade

Qualified products

Top grade

First grade

Qualified products

Sumtotal of zinc(base on zinc sulfate and barium sulfate %(m/m)≥

99

99

99

Total zinc amount(base on zinc sulfate)%(m/m)≥

28

28

30

Zinc oxide, %(m/m) ≤

0.6

0.8

1

0.3

0.3

0.5

0.3

0.3

0.5

105°C volatile%(m/m)≤

0.3

0.3

0.5

0.3

0.3

0.5

0.3

0.3

0.5

After Soluble in water%(m/m)≤

0.4

0.5

0.5

0.4

0.5

0.5

0.3

0.4

0.5

Residue on sieve (63um sieve pore) %(m/m)≤

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

Color(compare with standard sample)

Exc-
elled

Approx-
imately

slight poorer

Exc-
elled

Approx-
imately

slight poorer

Exc-
elled

Approx-
imately

slight poorer

Water extraction alkaline hardness

Neutral

Oil absorption,
g/100g≤

14

11

10

Reducing power(compare with standard sample), %≥

105

100

95

105

100

95

105

100

95

Hiding power(contrast ratio)

Not lower than 5% of standard sample