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必应染料-您身边的染料专家

Direct Yellow 66

Name:C.I.Direct Yellow 66,C.I.25225

Molecular Structure: Double azo class

C.I.Direct Yellow 66,C.I.25225,650.51,C30H20N8Na2O7,Para Yellow RL

C.I.Direct Yellow 66,C.I.25225,650.51,C30H20N8Na2O7,Para Yellow RL

Molecular Formula:C30H20N8Na2O7

Molecular Weight: 650.51

CAS Registry Number:

Manufacturing Methods : 4-Nitrobenzenamine diazo, coupled with 2-Hydroxybenzoic acid, will the nitro reduction, and 4-Nitrobenzoyl chloride condensation , then the nitro reduction nitride pay equal attention to, and 1-(3-Nitrophenyl)-3-carboxy-5-pyrazolone coupling and will last a nitro reduction.

Properties and Applications: yellow. Moderate soluble in water for yellow orange, hardly soluble in alcohol. The strong sulfuric acid in orange, yellow for diluted. The dye solution to join strong hydrochloric acid colour and lustre is obvious change; Add thick sodium hydroxide solution without change color. Used for cellulose d dyeing and printing, dyeing copper, iron ion in the same light

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

List of Suppliers:

Para Yellow RL( IG Farbenindustrie AG )


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