Indigo carmine AR 25GM | |||
20792SG025 | 902130311AW | ||
AR | 9021303 | ||
860-22-0 | 91244 | ||
C16H8N2Na2O8S2 | January 2023 | ||
466.35 | December 2027 | ||
Sr.No. | Test | Result | Specification |
---|---|---|---|
1 | Description | Dark blue powder with coppery luster. | Dark blue powder with coppery luster. |
2 | Solubility | Complies | 1% solution in water should be clear. |
3 | Absorption, L max | 612nm | 608-612nm |
4 | Absorptivity(A1%,1cm,L max.) | 423 | min.400 |
5 | Absorption ratio | 0.99 | 0.98-1.07 |
6 | Dye content (Titanometry:on dried sub.) | 86% | min.85% |
7 | Sulphated ash | 32% | 30-35% (on dried basis) |
8 | Insoluble matter | 0.1% | 0.2%max |
9 | Loss on drying,120°C | 6% | 10%max |
Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |