5859-00-7 Usage
Uses
Used in Textile Industry:
Disodium 3-hydroxy-4-(phenylazo)naphthalene-2,7-disulphonate is used as a direct dye for the coloring of fibers such as wool, silk, cotton, and vinegar fiber. It provides a vibrant red light orange color to the fibers, enhancing their visual appeal and quality.
Used in Paper Industry:
In the paper industry, disodium 3-hydroxy-4-(phenylazo)naphthalene-2,7-disulphonate is utilized as a coloring agent for paper coating. disodium 3-hydroxy-4-(phenylazo)naphthalene-2,7-disulphonate imparts a reddish hue to the paper, improving its overall appearance and aesthetic value.
disodium 3-hydroxy-4-(phenylazo)naphthalene-2,7-disulphonate also exhibits various fastness properties, which are essential for its performance in different applications:
1. Light Fastness: It has a rating of ISO 4, indicating that it maintains its color well when exposed to light.
2. Soaping: The fastness to soaping is rated at ISO 2, suggesting that the color remains stable even after washing with soap.
3. Perspiration Fastness: It has a rating of ISO 5, which means that the color does not fade or stain when exposed to sweat.
4. Oxygen Bleaching: The fastness to oxygen bleaching is rated at ISO 3-4, indicating that the color is resistant to fading when exposed to oxygen-based bleaching agents.
5. Fastness to Seawater: disodium 3-hydroxy-4-(phenylazo)naphthalene-2,7-disulphonate has a rating of ISO 1, which means that it is highly resistant to fading or staining when exposed to seawater.
Preparation
aniline diazo, coupled with 3-Hydroxynaphthalene-2,7-disulfonic acid.
Standard
Light Fastness
Fading
Stain
ISO
4
Check Digit Verification of cas no
The CAS Registry Mumber 5859-00-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,8,5 and 9 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 5859-00:
(6*5)+(5*8)+(4*5)+(3*9)+(2*0)+(1*0)=117
117 % 10 = 7
So 5859-00-7 is a valid CAS Registry Number.
InChI:InChI=1/C16H12N2O7S2/c19-16-14(27(23,24)25)9-10-8-12(26(20,21)22)6-7-13(10)15(16)18-17-11-4-2-1-3-5-11/h1-9,17H,(H,20,21,22)(H,23,24,25)/b18-15-
5859-00-7Relevant articles and documents
Molecular structure encodes nanoscale assemblies: Understanding driving forces in electrostatic self-assembly
Willerich, Immanuel,Groehn, Franziska
, p. 20341 - 20356 (2011)
Supramolecular nanoparticles represent a key field in recent research as their synthesis through self-assembly is straightforward and they often can respond to external triggers. A fundamental understanding of structure-directing factors is highly desirable for a targeted structure design. This contribution demonstrates a quantitative relation between the size of supramolecular self-assembled nanoparticles and the free energy of association. Nanoparticles are prepared by electrostatic self-assembly of cationic polyelectrolyte dendrimers as model macroions and oppositely charged di- and trivalent organic dye molecules relying on the combination of electrostatic and π-π-interactions. A systematic set of sulfonate-group carrying azo-dyes was synthesized. Light scattering and ζ-potential measurements on the resulting nanoparticles yield hydrodynamic radii between 20 nm H -1 is necessary to induce dendrimer interconnection. Structural features of the azo dyes causing these to favor or prevent nanoparticle formation have been identified. The dye-dye-interaction was found to be the key factor in particle size control. A simple model yields a quantitative relation between the free energy and the particle sizes, allowing for predicting the latter based on thermodynamic measurements. Hence, a set of different molecular "building bricks" can be defined where the choice of building block determines the resulting assembly size.
