Oxamine blue 4r
- CAS NO.：2429-72-3
- Empirical Formula: C34H28N5NaO8S2
- Molecular Weight: 721.73
- MDL number: MFCD00059541
- EINECS: 219-383-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:50:37
What is Oxamine blue 4r?
Preparation
3,3′-Dimethylbenzidine double nitriding, first in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and then and 4-Hydroxynaphthalene-1-sulfonic acid coupling.
Properties and Applications
dark red light blue. Soluble in water for violet black, slightly soluble in ethanol for red light purple. The strong sulfuric acid for green light blue, diluted red for purple, have precipitation; In nitric acid for dark purple, and then into a red light purple. Dye with strong hydrochloric acid solution for purple, have precipitation; Add thick sodium hydroxide solution for purplish red color, have precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 4 | 4 | 1 | 1-2 | 2 | ||
| AATCC | 5 | 2-3 | 2 | 3 | 2 | ||
Properties of Oxamine blue 4r
| Colour Index | 23705 |
Safety information for Oxamine blue 4r
Computed Descriptors for Oxamine blue 4r
New Products
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