PYROGALLOL AR 
Appearance of solution (1.0 g/l;water) almost clear
Transition range at pH 3.0 to pH 5.2 Violet to orange red
Loss on drying at 110°C Max 5.0 %
Sensitivity test Passes test
Appearance Brownish red powder
| CAS No. | 573-58-0 |
|---|---|
| Molecular Formula | C32H22N6Na2O6S2 |
| Molecular Weight | 696.67 |
| HS Code | 3204.1400 |
| Symbol | GHS08 |
| Signal Word | Danger |
| Hazardous Statement | H350-H361d |
| Precaution Statement | P201-P202-P280-P308+P313-P405-P501 |
| Packing | 25 gm |
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CONGO RED INDICATOR FOR MICROSCOPY
Congo Red 4B, Cosmos Red, Cotton Red B, Cotton Red C, Direct Red 28, Direct Red R, Direct Red Y
