Direct black ex, Direct black 38, Direct black 38 dye

Direct Black EX

Product Name: Direct Black EX/Direct Black BRN

» C.I. No.: 30235

» C.I. Name: Direct black 38

» CAS No.: 1937-37-7

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When dyeing cotton or viscose with Direct Black EX, it is black with high blackness, which is better than direct black G.

High dyeing rate, poor migration, Direct Black EX is mainly used for textile industry.

direct-black-38-02

Direct Black EX Specification

» Direct Dyes Name: Direct black EX

» Colour Index: C.I.Direct black 38(30235)

» CAS No.: 1937-37-7

» Appearance: Black Powder .

» Usage: Cotton Dyestuffs, Leather Dyestuffs, Wood Dyestuffs, Polyamine Fiber Dyestuffs

Direct Black EX Basic Information

Basic Information
Product Name	Direct Black EX
Colour Index	C.I. Direct Black 38
Colour Index No.	30235
CAS No.	1937-37-7
Specification
Shade	Similar With Standard
Appearance	Uniform Black Powder
Moisture %≤	1.2
Insoluble Matter %≤	0.5
Properties	Very soluble in water and alcohol

Direct Black EX Properties

The appearance is brown black powder. After soluble in water, it’s black with greenish tint. After soluble in ethanol, it is blue black, soluble in fibrinolysin, insoluble in other organic solvents. When concentrated sulphuric acid, it is dark red with blueish shade. It produces purple to black precipitation with reddish shade after dilution; when concentrated nitric acid, it is brown solution with yellowish shade; when concentrated hydrochloric acid, it is black color with dark reddish shade. When concentrated hydrochloric acid, it is used to precipitate the dye solution in purple color.

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