Disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate is a synthetic azo dye characterized by its bright orange color. It is soluble in water, where it appears as a golden brown color, and slightly soluble in ethanol, where it exhibits a light golden brown hue. When treated with strong sulfuric acid, the dye turns orange, which then shifts to a gold color upon dilution. The dye solution changes to golden brown upon the addition of strong hydrochloric acid, and turns red light orange brown when mixed with a thick sodium hydroxide solution.
2347-72-0
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Basic information
- Product Name: disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate
- Synonyms: disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate;CI 15980;2-Naphthalenesulfonic acid, 6-hydroxy-5-(3-sulfophenyl)azo-, disodium salt;E 111;ORANGEGGN;CIFOODORANGE2;FOODORANGE2;6-Hydroxy-5-(m-sodiooxysulfonylphenylazo)-2-naphthalenesulfonic acid sodium salt
- CAS NO:2347-72-0
- Molecular Formula: C16H10N2Na2O7S2
- Molecular Weight: 452.36934
- EINECS: 219-073-7
- Product Categories: N/A
- Mol File: 2347-72-0.mol
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Chemical Properties
- Melting Point: N/A
- Boiling Point: °Cat760mmHg
- Flash Point: °C
- Appearance: /
- Density: g/cm3
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- CAS DataBase Reference: disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate(CAS DataBase Reference)
- NIST Chemistry Reference: disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate(2347-72-0)
- EPA Substance Registry System: disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate(2347-72-0)
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Safety Data
- Hazard Codes: N/A
- Statements: N/A
- Safety Statements: N/A
- WGK Germany:
- RTECS:
- HazardClass: N/A
- PackingGroup: N/A
- Hazardous Substances Data: 2347-72-0(Hazardous Substances Data)
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2347-72-0 Usage
Uses
Used in Textile Industry:Disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate is used as a coloring agent for dyeing fabrics, providing a vibrant and long-lasting color to textiles. Its solubility in water and ability to produce different shades under various chemical conditions make it a versatile choice for the textile industry.
Used in Analytical Chemistry:
In the field of analytical chemistry, disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate is utilized as a reagent for the detection and quantification of specific ions or compounds. Its color-changing properties in response to different chemical environments allow for accurate and sensitive analysis.
Used in Dye-sensitized Solar Cells (DSSCs):
Disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate is employed as a sensitizer in dye-sensitized solar cells, where it helps to improve the efficiency of light absorption and energy conversion. Its strong light absorption properties make it a suitable candidate for enhancing the performance of DSSCs.
Used in Colorimetry:
This azo dye is also used in colorimetric assays, where its color changes are exploited to determine the concentration of various substances. The dye's sensitivity to different chemical conditions allows for precise measurements and analysis in colorimetric applications.
Preparation
3-Aminobenzenesulfonic acid diazo, and 6-Hydroxynaphthalene-2-sulfonic acid coupling.Check Digit Verification of cas no
The CAS Registry Mumber 2347-72-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,3,4 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.Calculate Digit Verification of CAS Registry Number 2347-72:
(6*2)+(5*3)+(4*4)+(3*7)+(2*7)+(1*2)=80
80 % 10 = 0
So 2347-72-0 is a valid CAS Registry Number.
InChI:InChI=1/C16H12N2O7S2.2Na/c19-15-7-4-10-8-13(27(23,24)25)5-6-14(10)16(15)18-17-11-2-1-3-12(9-11)26(20,21)22;;/h1-9,17H,(H,20,21,22)(H,23,24,25);;/q;2*+1/p-2/b18-16+;;
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disodium 6-hydroxy-5-[(3-sulphonatophenyl)azo]naphthalene-2-sulphonate
