SR. No |
Criteria |
Limit/Specification |
1 |
DESCRIPTION |
Orange Red Powder, Odourless & Hygroscopic. |
2 |
L.O.D. AT 105 C. |
≤ 5.0% |
3 |
HEAVY METALS(as Pb)mg/Kg, |
40.0 Max. |
4 |
COMBINED ETHER EXTRACT, % BY MASS MAX. |
0.5% Max. |
5 |
DYE INTERMEDIATES, % BY MASS MAX. |
2.0 % Max. |
6 |
FLUORESCENCE |
λ max 460 nm , λ max 515 nm |
7 |
UV ABSORPTION (E1% in a 1 cm cell in distilled water) |
λ max. At 490 nm ± 2 nm |
8 |
ABSORBANCE at λ max. (of 0.004 mg/ml solution in distilled water at 9pH & 1 cm path length in quartz cuvette) |
Between 0.8 to 0.912 |
9 |
ASSAY |
90% 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.