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 |
SPECIFICATIONS
| 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. |
Applications: Acid Yellow 73 is water soluble fluorescent dye. It is mainly used as a tracer dye for leak detections, in detergents and soaps, coolants, etc.
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