| Specification | ||
| Test I tem | S pecification | T est Method |
| Appearance | Yellow to orange crystalline powder | Visual |
| Identification | ||
| Ultraviolet Absorption |
AR256R/AR365R is 2.80-3.00
|
USP 38 |
| Water | Max 8.5% | USP 38 |
| Residue on ignition | Max 0.3% | USP 38 |
| Assay | 97.0~102.0% | USP 38 |