Direct Red 28

Product Name: Direct Congo Red/Direct Scarlet 4BE


» C.I. No.: 22120

» C.I. Name: Direct Red 28

» CAS No.:  573-58-0

Product Detail

Product Tags

Direct red 28, also known as direct congo red, direct scarlet 4BE, cotton red, direct vermilion, direct scarlet, has good application in pulp dyeing, and the amount is large.

Direct red 28 is widely used for dyeing cellulose fibers such as cotton, linen and viscose. It can also be used for dyeing silk, nylon and viscose/wool, viscose/nylon blended fabrics, paper and leather dyeing.

Direct red 28 dye can also be used for the dyeing of papermaking scarlet dye, super red powder and firecracker paper.


Direct Red 28 Specification

» Direct Dyes Name: Direct Scarlet 48E/ Direct Congo red

» Colour Index: C.I. Direct red 28(22120)

» CAS No.:  573-58-0

» Appearance: Shinning Dark Green Even Fluffy Powder .

» Usage: Paper Dyestuffs, Leather Dyestuffs, Nylon Dyestuffs, Linen Dyestuffs, Wool Dyestuffs,


Direct Red 28 Basic Information

Basic Information

Product Name

Direct Scarlet 4BE/ Direct Congo Red

Colour Index 

C.I. Direct Red 28

Colour Index No.






Similar With Standard
           Strength 100%


Brown Red Powder .
        Moisture %≤ 1.5

Insoluble Matter %≤



Very soluble in water and alcohol

Physicochemical Properties of Direct Red 28:

It is a kind of brown-red powder and become red color with yellowish shade after soluble in water. It is orange color after soluble in ethanol, slightly soluble in acetone. When concentrated sulfuric acid, it is dark blue, and when diluted, it is light blue to blue precipitation. After adding concentrated hydrochloric acid in the water solution, it’s blue color with reddish shade.

XCWY Main Dyes

» Direct red dyes

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» Acid red dyes


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