Alizarin red S for microscopy 100GM | |||
10054SG100 | 863632526DU | ||
For Microscopy | 8636325 | ||
130-22-3 | 74290 | ||
C14H6Na2O7S | April 2021 | ||
364.24 | March 2026 | ||
Sr.No. | Test | Result | Specification |
---|---|---|---|
1 | Description | Orange powder. | Yellow to orange powder. |
2 | Solubility | Passes | Soluble in water and alcohol. |
3 | Dye content (Spectrophotometry, on dry basis) | 79.00% | min. 70.00% |
4 | pH transition range (pH 4.3 - 6.3) | Passes | Brilliant yellow to pink |
5 | pH transition range (pH 9.4 - 12.0) | Passes | Brown orange to violet |
6 | Absorption, L max (pH 4.3) | 419nm | 418 - 424nm |
7 | Absorption, L max (pH 6.3) | 515nm | 514 - 520nm |
8 | Absorption, L max (pH 9.4) | 447nm | 445 - 451nm |
9 | Absorption, L max (pH 12.0) | 555nm | 554 - 558nm |
10 | Loss on drying,110°C | 7.16% | 8.00% max. |
Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |