Neutral red (pH indicator) AR 10GM | |||
21006SG010 | 821410325IS | ||
AR | 8214103 | ||
553-24-2 | 53572 | ||
C15H17ClN4 | September 2019 | ||
288.78 | August 2024 | ||
Sr.No. | Test | Result | Specification |
---|---|---|---|
1 | Description | Dark green crystals. | Dark green crystals. |
2 | Solubility | Passes | Soluble in water or alcohol with red color. |
3 | Dye content (Spectrophotometry, on dry basis) | 63.80% | ~ 60% |
4 | pH transition range(pH 6.8-8.0) | Passes | Violet red-orange yellow |
5 | Absorption, L max | 540 nm | 539-544 nm |
6 | Absorptivity(1%, 1cm, on dry basis) | 3670 | Min. 900 |
7 | Loss on drying,110°C | 7.14% | 8.0% max |
Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |