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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.

3441-14-3

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3441-14-3 Usage

Uses

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)

Preparation

aniline and N-(4-aminophenyl)acetamide diazo respectively, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea coupling.

Hazard

Low toxicity by ingestion.

Standard

Acid Resistance

Fading

Stain

ISO

5

AATCC

5

Check Digit Verification of cas no

The CAS Registry Mumber 3441-14-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,4,4 and 1 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3441-14:
(6*3)+(5*4)+(4*4)+(3*1)+(2*1)+(1*4)=63
63 % 10 = 3
So 3441-14-3 is a valid CAS Registry Number.
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-

3441-14-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name Direct Red 23

1.2 Other means of identification

Product number -
Other names redembl

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:3441-14-3 SDS

3441-14-3Upstream product

3441-14-3Downstream Products

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