Sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate is an organic compound that exhibits a red light navy blue to black color. It is soluble in water, resulting in a purple to black hue, and has varying solubility in ethanol and acetone, producing a red light purple color when in the right amount and slightly soluble in acetone. In concentrated sulfuric acid, it appears red light purple, and upon dilution, it turns orange with red precipitation. When its dye aqueous solution is mixed with concentrated hydrochloric acid, it turns orange, and when mixed with concentrated sodium hydroxide solution, it becomes bordeaux red.
3179-84-8
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Basic information
- Product Name: sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate
- Synonyms: sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate;Benzenesulfonic acid, 4-hydroxy-3-(2-hydroxy-1-naphthalenyl)azo-5-nitro-, monosodium salt;3-(2-Hydroxy-1-naphtylazo)-4-hydroxy-5-nitrobenzenesulfonic acid sodium salt;4-Hydroxy-3-[(2-hydroxy-1-naphthalenyl)azo]-5-nitrobenzenesulfonic acid sodium salt;Acid Alizarine Black R;C.I.15690;C.I.Mordant Black 15;Solochrome Black RN
- CAS NO:3179-84-8
- Molecular Formula: C16H10N3NaO7S
- Molecular Weight: 411.32127
- EINECS: 221-663-4
- Product Categories: N/A
- Mol File: 3179-84-8.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: sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate(CAS DataBase Reference)
- NIST Chemistry Reference: sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate(3179-84-8)
- EPA Substance Registry System: sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate(3179-84-8)
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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: 3179-84-8(Hazardous Substances Data)
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3179-84-8 Usage
Uses
Used in Dye Industry:Sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate is used as a dye for various applications due to its color-changing properties in different solvents and its solubility in water, ethanol, and acetone.
Used in Textile Industry:
Sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate is used as a dye for textiles, providing colorfastness to various treatments such as ironing, light exposure, fulling, perspiration, soaping, water, alkali, and acid, as indicated by its ratings in ISO and AATCC standards.
Used in Analytical Chemistry:
Sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate can be used as an analytical reagent in various chemical tests and assays, taking advantage of its color-changing properties in the presence of different chemicals and its solubility in various solvents.
Preparation
3-Amino-4-hydroxy-5-nitrobenzenesulfonic acid diazotization, and Naphthalen-2-ol coupling.Standard
Ironing FastnessAlkali
AcidISO
5AATCC
5Check Digit Verification of cas no
The CAS Registry Mumber 3179-84-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,1,7 and 9 respectively; the second part has 2 digits, 8 and 4 respectively.Calculate Digit Verification of CAS Registry Number 3179-84:
(6*3)+(5*1)+(4*7)+(3*9)+(2*8)+(1*4)=98
98 % 10 = 8
So 3179-84-8 is a valid CAS Registry Number.
InChI:InChI=1/C16H11N3O7S.Na/c20-14-6-5-9-3-1-2-4-11(9)15(14)18-17-12-7-10(27(24,25)26)8-13(16(12)21)19(22)23;/h1-8,17,21H,(H,24,25,26);/q;+1/p-1/b18-15-;
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sodium 4-hydroxy-3-[(2-hydroxy-1-naphthyl)azo]-5-nitrobenzenesulphonate
