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HomeProduct name listDirect blue 215 (C.I. 24415)

Direct blue 215 (C.I. 24415)

  • CAS NO.:6771-80-8
  • Empirical Formula: C40H33N6NaO13S3
  • Molecular Weight: 924.9
Direct blue 215 (C.I. 24415) Structural

What is Direct blue 215 (C.I. 24415)?

Preparation

3,3′-Dimethoxylbenzidine double nitriding, first and 4-Amino-5-hydroxynaphthalene-1,3-disulfonic acid, and then in three alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications

green light blue. Soluble in water for blue purple, and adequate soluble in alcohol. The strong sulfuric acid for Tracy in blue, and in purple for diluted. The dye solution to join strong hydrochloric acid for red light blue; Add thick sodium hydroxide solution for dark purple, have precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3-4 3-4 6 3-4 2 4 2

Safety information for Direct blue 215 (C.I. 24415)

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