Home » speciality Dyes and Biological Stains » Acid Yellow 73
PRODUCT SPECIFICATIONS | |
---|---|
PRODUCT NAME | Acid Yellow 73 |
SYNONYMS | Uranin, Soap Yellow, Fluorescein Sodium, water soluble fluorescein, C.I 45350 |
CAS No | 518-47-8 |
Color Index No | 45350 |
SR. No | Criteria | Limit/Specification |
---|---|---|
1. | DESCRIPTION | Orange Red Powder, Odourless & Hygroscopic |
2. | L.O.D. AT 105 C. | ≤5.0% |
3. | COMBINED ETHER EXTRACT, % BY MASS MAX. | 0.5% Max. |
4 | DYE INTERMEDIATES, % BY MASS MAX. | 2.0 % Max. |
5 | FLUORESCENCE | λ max 460 nm , λ max 515 nm |
6 | UV ABSORPTION (E1% in a 1 cm cell in distilled water) |
λ max. At 490 nm ± 2 nm |
7 | ABSORBANCE at λ max. (of 0.004mg/ml solution in distilled water at 9pH & 1 cm path length in quartz cuvette) |
Between 0.8 to 0.912 |
8 | ASSAY | 90.0% Min. |