|
Item |
Specification |
|
Appearance |
white powder |
|
Melting point range |
156~161℃ |
|
Loss on heating |
0.3% max |
|
Ash content |
0.10% max |
|
transmittance
|
425nm 96.0% min |
| 500nm 98.0% min | |
|
Purity |
98% min |