DIRECT SCARLET B
- CAS NO.：3530-19-6
- Empirical Formula: C30H25N4NaO8S2
- Molecular Weight: 656.66
- MDL number: MFCD00059531
- EINECS: 222-560-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:14:06
What is DIRECT SCARLET B?
The Uses of DIRECT SCARLET B
Direct Scarlet B is a dye used with textiles. It is a water pollutant, removed via chitin adsorption.
Preparation
4-(4-Aminophenyl)benzenamine double nitriding, first and 7-Hydroxynaphthalene-1,3-disulfonic acid coupling, again with phenol coupling, and then in contain sodium carbonate in aqueous solution of ethanol heating, air pressure,Using Chloroethane to make phenol??hydroxy ethylated?.
Properties and Applications
red. Soluble in water for red, slightly soluble in alcohol, acetone and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for dark purple, after diluted brown precipitation; In nitric acid solution for colourful red. The dye solution to join strong hydrochloric acid have orange brown precipitation; Add thick sodium hydroxide solution for red orange, precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 3-4 | 4 | 2 | 1-2 | 1-2 | ||
| AATCC | 3 | 5 | 2-3 | 1 | 1 | ||
Properties of DIRECT SCARLET B
| storage temp. | Amber Vial, Refrigerator, Under inert atmosphere |
| solubility | DMSO (Slightly), Methanol (Slightly), Water (Slightly) |
| form | Solid |
| Colour Index | 22240 |
| color | Very Dark Red |
| CAS DataBase Reference | 3530-19-6 |
| EPA Substance Registry System | C.I. Direct Red 37, disodium salt (3530-19-6) |
Safety information for DIRECT SCARLET B
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P271:Use only outdoors or in a well-ventilated area. P501:Dispose of contents/container to..… |
Computed Descriptors for DIRECT SCARLET B
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