Direct Red 243
- CAS NO.：86543-85-3
- Empirical Formula: C38H32N10O17S4
- Molecular Weight: 1028.97748
- MDL number: MFCD00286977
- Update Date: 2026-08-28 09:47:36
What is Direct Red 243?
Preparation
3-Amino-4-hydroxybenzenesulfonic aciddiazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, its products and 2,4,6-Trichloro-1,3,5-triazine condensation, 2-Amino-5-methoxybenzenesulfonic acid diazo, and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, again with the condensation products condensation, then with 2-Aminoethanol condensation
Properties and Applications
blue-ray red. Used for dyeing and printing of cellulose fiber.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 7 | 3-4 | 2-3 | ||||
Properties of Direct Red 243
| EPA Substance Registry System | C.I. Direct Red 243 (86543-85-3) |
Safety information for Direct Red 243
Computed Descriptors for Direct Red 243
Direct Red 243 manufacturer
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