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Mordant Red 7

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Mordant Red 7 / CAS : 3618-63-1

Appearance Blue light red pulverulent. Soluble in water and slightly soluble in ethanol and acetone. Its aqueous solution turns yellow to brown light red, with dilute sulfuric acid to red light orange; The concentrated alkali turned bright red. Rose red in concentrated sulfuric acid, turning orange upon dilution; The color disappeared in concentrated nitric acid. Exposure to copper, iron and chromogenic light changes during staining. UN 0
HS 32041200 DG Class 0
Synonyms Eriochrome Red B; Superchrome Red Ecb; Chrome Red; Acid Chrome Red; Fenakrom Red B; Ci No 18760; 1-Naphthalenesulfonic Acid, 4-[2-(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Diazenyl]-3-Hydroxy-, Sodium Salt (1:1); Chrome Fast Red B; Ci 18760; 1-Naphthalenesulfonicacid,4-[(4,5-Dihydro-3-Methyl-5-Oxo-1-Phenyl-1H-Pyrazol-4-Yl)Azo]-3-Hydroxy-,Monosodiumsalt; Eriochromered; Acid Chrome Bordeaux Bn
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Properties

Summary

Formula
C20H15N4NaO5S
Molecular Mass
446.41200
Exact Mass
446.06600
PSA
148.58000
Logp
5.14540

Attribute classification

Category
Dyestuffs and Pigments > Other Dyes

Chemical and Physical Properties

Density
1.53g/cm3
Appearance
Blue light red pulverulent. Soluble in water and slightly soluble in ethanol and acetone. Its aqueous solution turns yellow to brown light red, with dilute sulfuric acid to red light orange; The concentrated alkali turned bright red. Rose red in concentrated sulfuric acid, turning orange upon dilution; The color disappeared in concentrated nitric acid. Exposure to copper, iron and chromogenic light changes during staining.
Acidity and Basicity
acidness

Export information

HS Code
32041200
Export Rebate
0%
UN No.
0
DG-Class
0
Risk Code
R36/37/38
Safety Label
Xi

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