Specification
| Appearance | Yellowish crystalline powder |
| Purity | 99.0% min |
| Melting point | 154-157° C |
| Volatile | 0.5% max |
| Ash | 0.1% max |
| Loss on Drying | < =0.5% |
| Light Transmittance | 460nm≥97% ; 500nm≥98% |
| Packaging | 25 kg carton or a 25kg fiber drum, net weight, with an inner PE liner. |