|
ITEMS
|
STANDARD
|
|
Appearance
|
White crystalline powder
|
|
Identification
|
Conforms
|
|
Heat Stability
|
Not change in color after heating for 90 minutes at 105°C
|
|
Odor
|
Slight characteristic odor
|
|
Purity
|
99.0-101.0%
|
|
Water
|
≤0.5%
|
|
Melting Range (°C)
|
132-135
|
|
Residue on Ignition
|
≤0.2%
|
|
Aldehydes (as Formaldehyde)
|
0.1% Max
|
|
Lead (Pb)
|
≤5 mg/kg
|
|
Arsenic (As)
|
≤2 mg/kg
|
|
Mercury (Hg)
|
≤1 mg/kg
|
|
Heavy Metals (as Pb)
|
≤10 mg/kg
|
