Solvent yellow 124
Solvent Yellow 124 can be easily hydrolyzed with acids, splitting off the acetal group responsible for its solubility in nonpolar solvents, and yielding a water-soluble form which is easy to extract to water. Like a similar methyl orange dye, it changes color to red in acidic pH. Solvent Yellow 124 can be easily detected in the fuel at levels as low as 0.3 ppm by extraction to a diluted hydrochloric acid, allowing detection of the red diesel added into motor diesel in amounts as low as 2-3%.
Product: Solvent yellow 124
C.I. Name/No: Solvent yellow 124 C.I.111155
CAS 12671-74-8/27870-92-4
Hue: orange shade
Synonyms: Solvent Yellow 124;Liquid Solvent Yellow;Sudan Marker 455
Molecular Structure: 
Molecular Formula: C22H31N3O2
Molecular Weight: 369.50
| Light | Heat(℃) | Water | Soda (5%) | hydrochloric acid (5%) | |
| melting point | stability | ||||
| Weak-average | 100 | good | good | good | |
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