Item                    Model

H-WF -5

H-WF -8

H-WF -15

Chemical constituent

化学成分

Al(OH)3  [%]        ≥

99.7%

99.7%

99.7%

Al₂O₃    [%]          ≥

64.5

64.5

64.5

SiO₂     [%]        ≤

0.05

0.05

0.05

Fe₂O₃    [%]       ≤

0.01

0.01

0.01

Na₂O    [%]        ≤

0.30

0.30

0.30

Loss on ignition 灼减 ≤

35.0

35.0

35.0

Attached water水分  ≤

0.4

0.30

0.30

325 mesh  325目筛上≤

0.01

0.5

10

oil absorption 吸油率  ≈

22

20

18

Mean particle diameter粒度（D50） µ m   

5-7

6-9

13-17

Whiteness白度     [R457]         ≥

97

96

95

PH value PH值

10.0±1.5

Notes: In this specification, the mean particle size can also be produced according to customer's requirements. 备注：可根据客户要求调整产品粒度