| 1. | Appearance and properties : red to yellow crystal
外观与性状：红色至黄色结晶。 |
| 2. | Appearance : light yellow crystal
外观：微黄或橙色结晶 |
| 3. | Straw yellow crystal
微黄色晶体 |
| 4. | Properties ： white or mild yellow crystal , easy weathering in dry air , and easily weter - soluble
性状：白色或微黄晶体，在干燥的空气中易风化，能溶于水。 |
| 5. | Physical : features : monoclinic , lolorless for excellent , lolorless or light yellow crystal for first grade
物理状态：单斜晶，优等品为无色透明体，一等品为无色或带淡黄色晶体。 |
| 6. | Physical features : monoclinic , lolorless for excellent , lolorless or light yellow crystal for first grade
物理状态:单斜晶系结晶,优等品为无色透明体，一等品为无色或带淡黄色晶体。 |
| 7. | Fluorescent brightening agent er is compound of chrysophenine , fluorescent brightening agent er is green yellow crystal , mainly used in the bleach of terylene , estron , polyamide fibre and washing powder
荧光增白剂er为二苯乙烯类化合物。荧光增白剂er的结晶为绿黄色结晶物，可用于涤纶、醋酸纤维、锦纶和洗衣粉的增白。 |
