Mordant Red 5
- CAS NO.：3564-26-9
- Empirical Formula: C12H11N2NaO6S
- Molecular Weight: 334.28
- MDL number: MFCD00056115
- EINECS: 222-644-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-12-31 14:38:37
What is Mordant Red 5?
Preparation
3-Amino-4-hydroxybenzenesulfonic acid diazotization, and Resorcinol coupling.
Purification Methods
Purify the dye by precipitating the free acid from aqueous solution using concentrated HCl, then wash it and extract it with EtOH in a Soxhlet extractor. Evaporation of the EtOH leaves the purified acid which is converted to the sodium salt.
Properties and Applications
dark red to bordeaux. Soluble in water for orange to brown light orange, slightly soluble in ethanol for yellow orange, soluble in Acetone. In concentrated sulfuric acid to red light yellow, dilute color shallow; In concentrated nitric acid for orange brown solution.
| Standard | Ironing Fastness | Light Fastness | Fulling | Persperation Fastness | Soaping | Water | |
| Alkali | Acid | ||||||
| ISO | 2-3 | 5 | 3-4 | 3 | 4 | 4 | 5 |
| AATCC | 4-5 | 5 | 4-5 | 4-5 | 4-5 | 5 | |
Properties of Mordant Red 5
| EPA Substance Registry System | Benzenesulfonic acid, 3-[(2,4-dihydroxyphenyl)azo]-4-hydroxy-, monosodium salt (3564-26-9) |
Safety information for Mordant Red 5
Computed Descriptors for Mordant Red 5
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