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Item Name 

Standard

Poly Aluminium Chloride

Excellent

First grade

Second grade

Appearance

Light yellow

AL 2 O 3, ≥， %

30.0

29.0

27.0

Basicity,%

40-90

Water insoluble substance,%,≤

0.3

0.6

1.5

PH value(1% aqueous solution)

3.5-5.0

SO 2- ,%, ≤

9.8

Ammoniacal nitrogen,%, ≤

0.01

-

As,%, ≤

0.0002

-

Mn,%, ≤

0.0075

0.10

-

Cr 6+ ,%, ≤

0.0005

-

Hg,%, ≤

0.00001

-

Pb,%, ≤

0.001

-

Cd,%, ≤

0.0002

-

Note: The mass friction of such impurity as ammoniacal nitrogen,As,Pb,Cd,Hg, Cr 6+ are calculated by 10.0%  AL 2 O 3.