|
Item
|
Supperior class
|
Result
|
|
Purity % m/m
|
99.7 min
|
99.8
|
|
Melting point
|
151.5 min
|
152.8
|
|
Ammonia solution color, pt-co
|
5 max
|
1
|
|
Moisture % m/m
|
0.20 max
|
0.17
|
|
Ash, mg/kg
|
7 max
|
4
|
|
Iron, mg/kg
|
1.0 max
|
0.3
|
|
Nitric acid, mg/kg
|
10.0 max
|
1.1
|
|
Oxidable matter, mg/kg
|
60 max
|
17
|
|
Chroma of melts, pt-co
|
50 max
|
10
|
|
