Item

Standard

Packing

Excellant Grade

First grade

Second grade

contents

96.0%min

95.0%min

94.0%min

25kg/bag

Fe

0.03%max

0.05%max

0.10%max

Non-water
insoluble

0.1%max

0.2%max

0.25%max

PH of 1%
water solution

9.5-11.5

 Properties

White conglomerate or grain-like granule deliquescent
, easily soluble in water, but not in alcohol; its water
solution is alkaline, PH value of 1% solution is 9.5-11.5

It is mainly used for cyanide-free , electroplating. For
food grade it is mainly used as food additive, and
nourishment etc.