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C.I. Direct green 21

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C.I. Direct green 21 Basic information
Product Name:C.I. Direct green 21
Synonyms:C.I. Direct green 21;C.I.Direct Green 21:C.I.31790;Direct Green 21
CAS:8003-52-9
MF:C39H27N7O13S3.4Na
MW:989.84
EINECS:
Product Categories:
Mol File:Mol File
C.I. Direct green 21 Structure
C.I. Direct green 21 Chemical Properties
EPA Substance Registry SystemC.I. Direct Green 21 (8003-52-9)
Safety Information
MSDS Information
C.I. Direct green 21 Usage And Synthesis
Preparation4-(4-Aminophenyl)benzenamine double nitriding, coupled with 2-Hydroxybenzoic acid?, and then and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-1,3-disulfonic acid coupling.
Properties and Applicationsdark green. Soluble in water for SAP green, slightly soluble in soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid in the dark for the light blue, green for blu-ray diluted, accompanied by precipitation;?Dye solution was added 10% sodium hydroxide solution as a pale red brown.
Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
AATCC 5 5 3-4 2 3
Tag:C.I. Direct green 21(8003-52-9) Related Product Information
Direct Green 21:1 2,7-Naphthalenedisulfonic acid, 5-(benzoylamino)-3-[[2-ethoxy-6-sulfo-4-[(3-sulfo[1,1'-biphenyl]-4-yl)azo]-1-naphthalenyl]azo]-4-hydroxy-, tetrasodium salt 4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt DIRECT GREEN 12 Direct Green 105 4-Amino-5-hydroxy-3-[[4'-[(4-hydroxyphenyl)azo]-1,1'-biphenyl-4-yl]azo]-6-(1-naphtylazo)-2,7-naphthalenedisulfonic acid disodium salt Direct Green 104 Benzoic acid, 5-[[4'-[[8-amino-7-[(2,5-disulfophenyl)azo]-1-hydroxy-5-sulfo-2-naphthalenyl]azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, tetrasodium salt Direct Green 103