7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt is an organic compound that exhibits unique color properties and solubility characteristics in various solvents. It is soluble in water, showing a purplish-red color in darkness, and in ethanol, displaying a purple hue. When treated with strong sulfuric acid, the compound exhibits a blue-ray green color, which turns purple upon dilution. The dye solution forms a purple precipitate upon the addition of strong hydrochloric acid, while the addition of a concentrated sodium hydroxide solution results in a red sauce-like precipitate.

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Basic information
1. Product Name: 7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt
2. Synonyms: 7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt;C.I.27640;C.I.Direct Blue 140;Diazo Indigo Blue 3R
3. CAS NO:6226-99-9
4. Molecular Formula:
5. Molecular Weight: 0
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 6226-99-9.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: /
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt(CAS DataBase Reference)
10. NIST Chemistry Reference: 7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt(6226-99-9)
11. EPA Substance Registry System: 7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt(6226-99-9)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 6226-99-9(Hazardous Substances Data)

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6226-99-9 Usage

Uses

Used in Dye Industry:
7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt is used as a dye in the dye industry for its unique color-changing properties and solubility in various solvents. Its ability to produce different colors under different conditions makes it a versatile dye for various applications.
Used in Textile Industry:
In the textile industry, 7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt is used as a colorant for fabrics. Its light fastness, acid resistance, and alkali resistance properties make it suitable for dyeing and printing processes, ensuring color durability and resistance to fading and staining.
Used in Paper Industry:
7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt is used as a colorant in the paper industry for its ability to produce vibrant colors on paper surfaces. Its light fastness and resistance to acid and alkali make it suitable for various paper applications, including printing and writing.
Used in Cosmetics Industry:
In the cosmetics industry, 7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt is used as a color additive for various cosmetic products, such as lipsticks, blushes, and eyeshadows. Its unique color properties and solubility in different solvents make it an ideal ingredient for creating a wide range of shades and finishes.
Used in Analytical Chemistry:
7-Amino-3-[[4-[(4-amino-3-sodiosulfophenyl)azo]-1-naphthalenyl]azo]-4-hydroxynaphthalene-2-sulfonic acid sodium salt can be used as an analytical reagent in various chemical assays and tests. Its color-changing properties in response to different chemical conditions make it useful for detecting and measuring the presence of specific substances or reactions.

Preparation

3-(4-Amino-2-sulfophenylamino)-2,3-dioxopropanoic acid diazo, and Naphthalen-1-amine coupling, product to diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and then 2-(4-Aminophenylamino)-2-oxoacetic acid hydrolysis base.

Standard

Acid Resistance

Fading

Stain

ISO

Check Digit Verification of cas no

The CAS Registry Mumber 6226-99-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,2,2 and 6 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 6226-99:
(6*6)+(5*2)+(4*2)+(3*6)+(2*9)+(1*9)=99
99 % 10 = 9
So 6226-99-9 is a valid CAS Registry Number.

InChI:InChI=1/C26H20N6O7S2.2Na/c27-15-5-7-17-14(11-15)12-24(41(37,38)39)25(26(17)33)32-31-22-10-9-21(18-3-1-2-4-19(18)22)30-29-16-6-8-20(28)23(13-16)40(34,35)36;;/h1-13,33H,27-28H2,(H,34,35,36)(H,37,38,39);;/q;2*+1/p-2

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