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disodium 6-hydroxy-5-[[2-hydroxy-3-[(2-hydroxynaphthyl)azo]-5-sulphonatophenyl]azo]naphthalene-2-sulphonate

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disodium 6-hydroxy-5-[[2-hydroxy-3-[(2-hydroxynaphthyl)azo]-5-sulphonatophenyl]azo]naphthalene-2-sulphonate Basic information
Product Name:disodium 6-hydroxy-5-[[2-hydroxy-3-[(2-hydroxynaphthyl)azo]-5-sulphonatophenyl]azo]naphthalene-2-sulphonate
Synonyms:6-Hydroxy-5-[[2-hydroxy-3-[(2-hydroxy-1-naphtyl)azo]-5-sulfophenyl]azo]-2-naphthalenesulfonic acid disodium salt;Acid Alizarine Black;C.I.21725;C.I.Mordant Black 25;disodium 6-hydroxy-5-[[2-hydroxy-3-[(2-hydroxynaphthyl)azo]-5-sulphonatophenyl]azo]naphthalene-2-sulphonate;2-Naphthalenesulfonic acid, 6-hydroxy-5-[[2-hydroxy-3- [(2-hydroxy-1-naphthalenyl)azo]-5-sulfophenyl]azo ]-, disodium salt;C.I.Mordant Black 25:C.I.21725;disodium,(5Z)-5-[[2-hydroxy-3-[(2Z)-2-(2-oxonaphthalen-1-ylidene)hydrazinyl]-5-sulfonatophenyl]hydrazinylidene]-6-oxonaphthalene-2-sulfonate
CAS:3258-74-0
MF:C26H16N4Na2O9S2
MW:638.53618
EINECS:221-858-4
Product Categories:Organics
Mol File:3258-74-0.mol
disodium 6-hydroxy-5-[[2-hydroxy-3-[(2-hydroxynaphthyl)azo]-5-sulphonatophenyl]azo]naphthalene-2-sulphonate Structure
disodium 6-hydroxy-5-[[2-hydroxy-3-[(2-hydroxynaphthyl)azo]-5-sulphonatophenyl]azo]naphthalene-2-sulphonate Chemical Properties
Safety Information
MSDS Information
disodium 6-hydroxy-5-[[2-hydroxy-3-[(2-hydroxynaphthyl)azo]-5-sulphonatophenyl]azo]naphthalene-2-sulphonate Usage And Synthesis
Preparation3,5-Diamino-4-hydroxybenzenesulfonic acid double nitrogen, add Sodium hydroxide make show weak alkaline, in order to make molecules of chlorine is hydroxyl replaced, then first and 6-Hydroxynaphthalene-2-sulfonic acid coupling, again with Naphthalen-2-ol coupling.
Properties and Applicationsblue black. Soluble in water for purple to Copenhagen blue, slightly soluble in ethanol for dark purple, not soluble in Acetone. In concentrated sulfuric acid to deep purple, dilution after brown light orange. Dye aqueous solution to join concentrated hydrochloric acid to brown light orange, Join concentrated sodium hydroxide solution for purple.
Standard Ironing Fastness Light Fastness Fulling Persperation Fastness Soaping Water
Alkali Acid
ISO 5 7 5 4-5 4 5 5
disodium 6-hydroxy-5-[[2-hydroxy-3-[(2-hydroxynaphthyl)azo]-5-sulphonatophenyl]azo]naphthalene-2-sulphonate Preparation Products And Raw materials
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