| Identification | More | [Name]
Direct Red 23 | [CAS]
3441-14-3 | [Synonyms]
BENZO FAST SCARLET
CI 29160
DIRECT FAST SCARLET 4BS
DIRECT RED 23
Disodium 3-[(4-acetamidophenyl)azo]-4-hydroxy-7-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]naphthalene-2-sulphonate
2-naphthalenesulfonicacid,3-((4-(acetylamino)phenyl)azo)-4-hydroxy-7-((((5-hy
2-naphthalenesulfonicacid,3-[[4-(acetylamino)phenyl]azo]-4-hydroxy-7-[[[[5-hy
airedalescarlet4bd
aizenprimulascarlet4bsh
amanilfastscarlet4bs
benzanilfastscarlet4bsn
benzofastscarlet4bs
benzofastscarlet4bsa-cf
benzoscarlet4bs
C.I.Directred23
C.I.DirectRed23(29160)
c.i.directred23,disodiumsalt
chloraminefastscarlet4b
ChloramineFastScar-let4BS,SE
chloraminefastscarletse | [EINECS(EC#)]
222-348-4 | [Molecular Formula]
C35H25N7Na2O10S2 | [MDL Number]
MFCD00003946 | [Molecular Weight]
813.72 | [MOL File]
3441-14-3.mol |
| Hazard Information | Back Directory | [Hazard]
Low toxicity by ingestion. | [Preparation]
aniline and N-(4-aminophenyl)acetamide diazo respectively, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling. | [Properties and Applications]
red. Purple powder. Soluble in water for colourful red, solubility of 30 g/L (80 ° C), soluble in ethanol for orange, insoluble in acetone. The strong sulfuric acid was great red to product red, diluted light orange for palm. The dye solution to generate strong hydrochloric acid wine red precipitate; Add 10% sulfuric acid into a light blue; Add thick sodium hydroxide solution for red orange; Add 10% sodium carbonate (no change solution. Cellulose fiber of dyeing, dye devoured rate is very good, in the 80 ~ 100 ℃, affinity is the largest. Resistant to acid is very good. Copper ions in dyeing color shade darker; Iron ion in the same light. Mainly used in viscose etc of cellulose fiber dyeing, also can be used for silk, wool, paper and pulp dyeing, also can be used in the manufacture color which have pigment.
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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Fading
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Stain
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Fading
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Stain
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ISO
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5
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5
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2-3
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2
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|
2
|
|
|
AATCC
|
5
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5
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2-3
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4
|
|
2
|
|
|
|
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