Methyl red (pH indicator) 100GM | |||
10980SG100 | 917904307JW | ||
Indicator | 9179043 | ||
493-52-7 | 98184 | ||
C15H15N3O2 | October 2023 | ||
269.31 | September 2028 | ||
Sr.No. | Test | Result | Specification |
---|---|---|---|
1 | Description | Reddish brown crystals. | Redddish brown crystals. |
2 | Solubility | Complies | Soluble in alcohol & acetic acid. Insoluble in water. |
3 | Dye content | 96.6% | min. 85% |
4 | Transition range(pH 4.5-6.2) | Complies | red violet to brownish yellow |
5 | Absorption, L max | 524.2nm | pH 4.5,523-526nm |
6 | Absorption ,L max | 432nm | pH 6.2,430-434nm |
7 | Loss on drying,110°C | 3.30% | 5.00% max |
Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |