HS Code:
C.A.S number:
Haz class:
UN NUMBER:
Technical Specifications
PARAMETERS | SPECIFICATIONS |
---|---|
Appearance
|
White or almost white crystals Crystalline Powder
|
Clarity of solution
|
Clear
|
Assay
|
99.0 % – 100.5 %
|
Melting point
|
about 190°C
|
pH (2 % solution in water)
|
2.4 – 2.8
|
pH (5 % solution in water)
|
2.1 – 2.6
|
Colour of solution
|
≤ BY7
|
Copper
|
≤ 5 ppm
|
Heavy metals
|
≤ 10 ppm
|
Mercury
|
< 0.1 mg/kg
|
Lead
|
≤ 3 ppm
|
Cadmium (Cd)
|
< 1 mg/kg
|
Oxalic Acid
|
≤ 0.2 %
|
Iron
|
≤ 2 ppm
|
Loss of drying
|
≤ 0.4 %
|
Sulphate ash (residue on ignition)
|
≤ 0.1 %
|
Specific optical rotation
|
+20.5° – +21.5°
|
Impurity-C
|
negative
|
Organic volatile impurities Pass
|
Pass
|