Direct Red 23

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1.What is the Direct Red 23 ?

Direct Red 23 is a red-purple powder that is soluble in water, producing a colorful red solution with a solubility of 30 g/L at 80°C. It is also soluble in ethanol, resulting in an orange solution, but is insoluble in acetone. The dye solution generates a strong hydrochloric acid wine red precipitate, and adding 10% sulfuric acid results in a light blue color. Adding a thick sodium hydroxide solution produces a red-orange color, while adding 10% sodium carbonate does not change the solution. Direct Red 23 has good dye devouring rates on cellulose fibers, with the highest affinity between 80-100°C. It is resistant to acid and has good light fastness, soaping, and water fading properties.

2.What is the CAS number for Direct Red 23 ?

The CAS number of Direct Red 23 is 3441-14-3.

3.What are another words for Direct Red 23 ?

Synonyms?for?Direct Red 23 3441-14-3:2-Naphthalenesulfonicacid,3-[[4-(acetylamino)phenyl]azo]-4-hydroxy-7-[[[[5-hydroxy-6-(phenylazo)-7-sulfo-2-naphthalenyl]amino]carbonyl]amino]-,disodium salt (9CI);Benzo Fast Scarlet 4BS (6CI);C.I. Direct Red 23 (7CI);Aizen PrimulaScarlet 4BSH;Benzo Fast Scarlet 4BSA-CF;C.I. 29160;Chloramine Fast Scarlet 4B;Chloramine Fast Scarlet SE;Chrome Leather Scarlet SE;Columbia Fast Scarlet 4BS;Diacotton FastScarlet 4BS;Diamine Fast Scarlet 4BS;Diphenyl Fast Scarlet RS;Diphenyl Scarlet RS;Direct AcidFast Scarlet 4BS;Direct Brilliant Red 4A;DirectFast Scarlet 4B;Direct Fast Scarlet 4BS;Direct Fast Scarlet 4BSN;Direct Red 4BS;DirectScarlet;Direct Scarlet 4BS;Direct Scarlet Lightfast;Erie Fast Scarlet SCB;Fenamin Fast Scarlet 4BS;Hispamin Fast Scarlet 4BS;Kayaku Direct Fast Scarlet 4BS;Levacell Scarlet 4BS;Libia Scarlet 4BS;Nyanza Fast Scarlet 4BSA;Orbamin Scarlet 4BS;Paramine Fast Scarlet 4BS;Pheno Fast Scarlet 4BSY;Polycor Red SE;Red EMBL;Scarlet 4BS;Solar Red 4BSI;Wogenal Scarlet CB;

4.What is Direct Red 23 (3441-14-3) used for?

Used in Cellulose Fiber Dyeing Industry:
Direct Red 23 is used as a dye for cellulose fibers, such as viscose, due to its good dye devouring rates and affinity for these fibers at 80-100°C. Its resistance to acid and good light fastness make it suitable for this application.
Used in Silk and Wool Dyeing:
Direct Red 23 can also be used for dyeing silk and wool, as it provides good colorfastness and resistance to acid.
Used in Paper and Pulp Dyeing:
Direct Red 23 is used in the dyeing of paper and pulp, offering good colorfastness and resistance to acid.
Used in Pigment Manufacturing:
Direct Red 23 can be used in the manufacture of pigments for various applications, such as paints, inks, and coatings, due to its vibrant color and good light fastness properties.
Standard:
The standard for Direct Red 23 includes the following properties:
Acid Resistance: 5 (ISO) / 5 (AATCC)
Alkali Resistance: 5 (ISO) / 5 (AATCC)
Light Fastness: 2-3 (ISO) / 2-3 (AATCC)
Soaping: 2 (ISO) / 4 (AATCC)
Water Fading: 2 (ISO) / 2 (AATCC)
Stain Fading: 2 (ISO) / 2 (AATCC)

InChI:InChI=1/C35H27N7O10S2/c1-19(43)36-22-7-9-24(10-8-22)40-42-32-30(54(50,51)52)18-21-16-26(12-14-28(21)34(32)45)38-35(46)37-25-11-13-27-20(15-25)17-29(53(47,48)49)31(33(27)44)41-39-23-5-3-2-4-6-23/h2-18,39-40H,1H3,(H,36,43)(H2,37,38,46)(H,47,48,49)(H,50,51,52)/b41-31-,42-32-

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