| 1. | C. I. Hue Name | Solvent Red 23 |
| 2. | C. I. Number | 26100 |
| 3. | Chemical Class | DISAZO |
| 4. | Hue | Yellowish Red Powder |
| 5. | Physical Appearance | Dark Red Orange |
| 8. | PH | 7 To 8 |
| 9. | Molecular Weight | 352 |
| 10. | Solubility | Insoluble In Benzene, Soluble In Ethanol And Acetone, Very Soluble In Benzene |
| 11. | Lovibond Tintometer Reading 0.002% Colour In Benzene In 1/4 Inch Cell |
Yellow 2.5 ± 0.3 Red 8.6 ± 0.3 |
| 12. | Lead Contents | Less Than 20 PPM |
| 13. | Arsenic Contents | Less Than 2 PPM |
| 14. | Heavy Metal Contents | Less Than 100 PPM |
| 15. | Free Amine Contents | Less Than 200 PPM |
| 16. | Loss On Drying | 0.30% |
| 17. | Ash Content | 0.16% |
| No. | Fastness | |
| 1. | Light | Good |
| 2. | Heat : Melting Point Stable To |
195°C 70°C |
| 3. | Water | Insoluble |
| 4. | Effect Of 5% NA2CO3 | Unaffected |
| 5. | Effect Of 5% HCL | Unaffected |
| 6. | Material Supplied As | Heavy Paper Bags/ M.S. Drums/HDPE Carboys Inside Double Polythelene Bags |
| 7. | Uses | Mainly Oils, Fats And Waxes Also In Alcoholic, Ester And Hydrocarbon Solvents. Occasionally In Polystyrene Also Used In Cosmetics & as an Indicator. |