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Direct Red 127

Name:C.I.Direct Red 127,C.I.28215

Molecular Structure: Double azo class

C.I.Direct Red 127,C.I.28215,CAS 5938-84-1,718.67,C31H24N6Na2O8S2

C.I.Direct Red 127,C.I.28215,CAS 5938-84-1,718.67,C31H24N6Na2O8S2

Molecular Formula:C31H24N6Na2O8S2

Molecular Weight: 718.67

CAS Registry Number:5938-84-1

Manufacturing Methods : 2′,3-Dimethyl-4-amino-4′-sulfoazobenzene diazo, and 7-(3-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: Claret. Soluble in water for red light purple to purplish red color, soluble in ethanol for red, slightly soluble in soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for blue-ray green, for yellow orange after diluted, blue light green solution, brown to yellow. The dye solution to join strong hydrochloric acid for red zero red; Add thick sodium hydroxide solution for purple solution, accompanied by precipitation.

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

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3 Responses to “Direct Red 127”

  1. […] C.I.Direct Red 127 […]

  2. […] and Applications: Red Claret to blue light. And C.I. Direct Red 127  […]

  3. […] red orange brown precipitation; Add thick sodium hydroxide solution is Claret precipitation. And C.I. Direct Red 127 […]

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