4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt is a complex organic compound that exhibits unique properties and characteristics. It is characterized by its blue light green color when dissolved in water, and it is also soluble in solution and fiber. However, it is only slightly soluble in alcohol and insoluble in other organic solvents. In the presence of sulfuric acid, it turns palm black and becomes a shallow blue light green when diluted. In nitric acid, it appears olive and changes to brown to yellow. When strong hydrochloric acid is added to its dye solution, it turns blue light green and forms a precipitate. Adding concentrated sodium hydroxide solution results in a gray light blue color with precipitation.

6226-95-5

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Basic information
1. Product Name: 4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt
2. Synonyms: 4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt;C.I.27540;C.I.Direct Green 11
3. CAS NO:6226-95-5
4. Molecular Formula:
5. Molecular Weight: 0
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 6226-95-5.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: 4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt(CAS DataBase Reference)
10. NIST Chemistry Reference: 4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt(6226-95-5)
11. EPA Substance Registry System: 4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt(6226-95-5)
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: 6226-95-5(Hazardous Substances Data)

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6226-95-5 Usage

Uses

Used in Dye Industry:
4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt is used as a dye in the dye industry due to its unique color properties and solubility characteristics. Its ability to change color in the presence of different acids and bases makes it a versatile dye for various applications.
Used in Textile Industry:
In the textile industry, 4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt is used as a dye for coloring fabrics. Its solubility in water and fiber allows it to be easily applied to textiles, and its color-changing properties can be utilized to create unique and dynamic designs.
Used in Analytical Chemistry:
4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt can be used as an analytical reagent in chemistry due to its color-changing properties in the presence of different acids and bases. This makes it useful for detecting and measuring the concentration of various chemical species.
Standard:
The standard for 4,5-Dihydroxy-3-[[2-ethoxy-4-[(8-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]naphthalene-1-sulfonic acid sodium salt includes its acid resistance, alkali resistance, light fastness, soaping, water, fading, and staining properties. According to the ISO and AATCC standards, it has a rating of 3 for acid resistance, 2 for alkali resistance, 3 for light fastness, 1-2 for soaping, and 2 for water. The fading and staining properties have ratings of 2-3 and 1, respectively, for ISO standards, and 3-4 and 1 for AATCC standards.

Preparation

7-Aminonaphthalene-1-sulfonic acid diazo, and 2-Ethoxynaphthalen-1-amine?coupling, product to diazo, and 4,5Dihydroxynaphthalene-1-sulfonic acid coupling.

Standard

Acid Resistance

Fading

Stain

ISO

AATCC

2-3

Check Digit Verification of cas no

The CAS Registry Mumber 6226-95-5 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 5 respectively.
Calculate Digit Verification of CAS Registry Number 6226-95:
(6*6)+(5*2)+(4*2)+(3*6)+(2*9)+(1*5)=95
95 % 10 = 5
So 6226-95-5 is a valid CAS Registry Number.

InChI:InChI=1/C32H24N4O9S2.2Na/c1-2-45-27-16-24(34-33-19-14-13-18-7-5-12-28(23(18)15-19)46(39,40)41)20-8-3-4-9-21(20)31(27)36-35-25-17-29(47(42,43)44)22-10-6-11-26(37)30(22)32(25)38;;/h3-17,37-38H,2H2,1H3,(H,39,40,41)(H,42,43,44);;/q;2*+1/p-2

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