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必应染料-您身边的染料专家

Direct Yellow 67

Name:C.I.Direct Yellow 67,C.I.29080

Molecular Structure: Double azo class

C.I.Direct Yellow 67,C.I.29080,CAS 6420-34-4,742.69,C29H28N8Na2O9S2,Para Yellow R

C.I.Direct Yellow 67,C.I.29080,CAS 6420-34-4,742.69,C29H28N8Na2O9S2,Para Yellow R

Molecular Formula:C29H28N8Na2O9S2

Molecular Weight: 742.69

CAS Registry Number:6420-34-4

Manufacturing Methods : 2-Amino-4-formamidobenzenesulfonic acid diazo, and 2-Amino-4-methylanisole coupling, and then with water and light acyl gasification.

Properties and Applications: yellow. Moderate soluble in water for gold orange, slightly soluble in ethanol for yellow. The strong sulfuric acid in blue, diluted light gray for subtle stitching. The dye solution to join strong hydrochloric acid for dark brown precipitation; Add thick sodium hydroxide colour and lustre is no change.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
AATCC 1 4 2 3 3

List of Suppliers:

Para Yellow R( Bayer Group )


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