Direct Black E

Direct Black E

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    Product Discription

    Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
    Fading Stain Fading Stain
    ISO 3 3 3 2 2-3
    AATCC 3 3 4-5 3 2

    Properties and Applications: black. Palm black powder. Soluble in water for green light black, solubility 40 g/l (85 ℃), and adequate soluble in alcohol for green light blue-black, right amount soluble in soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid is a deep red in blue, diluted Purple dark reddish brown for to red light black precipitation; In nitric acid solution for yellow brown (not completely); In strong hydrochloric acid for dark red light black solution (don’t). The dye solution to join strong hydrochloric acid for Purple dark reddish brown, precipitation; Concentrated sodium hydroxide solution is generated gray light blue precipitaten. Cellulose fiber of dyeing, the dye absorption rate as well, in 80 ℃ temperature when the biggest affinity. Can discharge. Used for cotton, viscose, silk, polyamide fiber and its blending fabric, leather, wood, biological and plastic color, also used as the raw material of black ink.


    CAS No. 1937-37-7
    Chemical Name: Direct Black 38
    Synonyms: Nsc8679;Nsc47756;CI 30235;Metablack;AZO BLACK;Erieblackb; Direct Black RND
    CBNumber: CB0745257
    Molecular Formula: C34H25N9Na2O7S2
    Formula Weight: 781.73
    MOL File: 1937-37-7.Mol