3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt is a complex organic compound with a unique chemical structure. It is characterized by its blue and black color, as well as its resistance to acids and alkalis. 3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt also exhibits light fastness and has properties related to soaping, water fading, and stain fading.

6358-73-2

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Basic information
1. Product Name: 3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt
2. Synonyms: 3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt;C.I.35415;C.I.Direct Black 100;Direct Grey B;2,7-Naphthalenedisulfonic acid, 3,3'-((1,1'-biphenyl)-4,4'-diylbis(azo))bis(4-hydroxy-5-((2-hydroxy-1-naphthalenyl)azo)-, tetrasodium salt
3. CAS NO:6358-73-2
4. Molecular Formula: C52H30N8Na4O16S4
5. Molecular Weight: 1243.05768
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 6358-73-2.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: 3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt(CAS DataBase Reference)
10. NIST Chemistry Reference: 3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt(6358-73-2)
11. EPA Substance Registry System: 3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt(6358-73-2)
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: 6358-73-2(Hazardous Substances Data)

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6358-73-2 Usage

Uses

Used in Textile Industry:
3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt is used as a dye for the textile industry. Its blue and black color, along with its acid and alkali resistance, make it suitable for coloring fabrics and ensuring that the color remains vibrant and resistant to various environmental factors.
Used in Paint Industry:
In the paint industry, 3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt is used as a pigment. Its light fastness and resistance to acids and alkalis make it an ideal choice for creating long-lasting and durable paints.
Used in Plastics Industry:
3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt is also used in the plastics industry as a colorant. Its properties, such as acid and alkali resistance, make it suitable for coloring various types of plastics and ensuring that the color remains stable over time.
Used in Cosmetics Industry:
In the cosmetics industry, 3,3'-[[1,1'-Biphenyl]-4,4'-diylbis(azo)]bis[4-hydroxy-5-[(2-hydroxy-1-naphthalenyl)azo]naphthalene-2,7-disulfonic acid disodium] salt is used as a color additive. Its ability to provide a vibrant blue and black color, along with its resistance to various environmental factors, makes it a popular choice for coloring cosmetics such as eyeshadows, lipsticks, and nail polishes.

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid(2 Moore) coupled, product to double nitriding, and Naphthalen-2-ol (2 Moore) coupled.

Standard

Acid Resistance

Fading

Stain

ISO

Check Digit Verification of cas no

The CAS Registry Mumber 6358-73-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,3,5 and 8 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 6358-73:
(6*6)+(5*3)+(4*5)+(3*8)+(2*7)+(1*3)=112
112 % 10 = 2
So 6358-73-2 is a valid CAS Registry Number.

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