1658-56-6 Usage
Chemical Properties
Dark red to maroon powder
Preparation
4-Aminonaphthalene-1-sulfonic acid diazo, and Naphthalen-2-ol coupling.
Flammability and Explosibility
Notclassified
Properties and Applications
red. Deep red powder. Slightly soluble in acetone, soluble in ethanol, water and soluble fiber element (red). Meet strong sulfuric acid is blue purple, diluted was yellow brown precipitation; Meet nitric acid slightly soluble (red light yellow); Sodium hydroxide solution in a rare red brown, dark and precipitation. In dyeing copper and iron ion colour and lustre is dark. Discharge the gender is good. Also suitable for leather shading.
Standard
Light Fastness
Soaping
Persperation Fastness
Oxygen bleaching
Fastness to seawater
Fading
Stain
Fading
Stain
Fading
Stain
ISO
2-3
1
1
3
1
1
3
1
AATCC
4
1
1
3
1
1
2
2
Standard
Light Fastness
Fading
Stain
ISO
2-3
AATCC
4
Check Digit Verification of cas no
The CAS Registry Mumber 1658-56-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,5 and 8 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1658-56:
(6*1)+(5*6)+(4*5)+(3*8)+(2*5)+(1*6)=96
96 % 10 = 6
So 1658-56-6 is a valid CAS Registry Number.
InChI:InChI=1/C20H14N2O4S.Na/c23-18-11-9-13-5-1-2-6-14(13)20(18)22-21-17-10-12-19(27(24,25)26)16-8-4-3-7-15(16)17;/h1-12,23H,(H,24,25,26);/q;+1/p-1/b22-21+;