|
Item
|
Standard
|
|
Appearance
|
White crystals or crystalline powder
|
|
Assay
|
99.0 - 101.0%
|
|
Loss on drying
|
11.0 - 13.0%
|
|
Clarity and color of Solution
|
Conforms
|
|
Heavy metal (Pb)
|
10 ppm max
|
|
Usage
|
acidity regulator
|
|
CAS No.
|
6132-4-2
|
|
Formula
|
C6H5O7Na3.2H2O
|
|
Sulfate (SO4)
|
150 ppm max
|
|
Chloride (Cl)
|
50 ppm max
|
|
Readily carbonisable substances
|
Conforms
|
|
Alkalinity
|
Conforms
|
|
Oxalate
|
300 ppm max
|
|
Storage
|
in the shade
|
|
Packing
|
25kg/bag
|
