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Sodium 6-hydroxy-5-[[4-(o-tolylazo)-o-tolyl]azo]naphthalene-2-sulphonate, commonly known as Acid Orange 8, is a synthetic azo dye characterized by its water-solubility and vibrant color. This complex chemical compound is widely recognized for its use as a colorant in various industries, including textiles, paper, and leather manufacturing. Its ability to impart a distinct hue and remain stable in different conditions makes it a popular choice for a range of applications.

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  • 2-Naphthalenesulfonicacid, 6-hydroxy-5-[2-[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]diazenyl]-,sodium salt (1:1)

    Cas No: 7357-71-3

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  • 2-Naphthalenesulfonicacid, 6-hydroxy-5-[2-[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]diazenyl]-,sodium salt (1:1)

    Cas No: 7357-71-3

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  • 2-Naphthalenesulfonicacid, 6-hydroxy-5-[2-[2-methyl-4-[2-(2-methylphenyl)diazenyl]phenyl]diazenyl]-,sodium salt (1:1)

    Cas No: 7357-71-3

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  • 7357-71-3 Structure
  • Basic information

    1. Product Name: sodium 6-hydroxy-5-[[4-(o-tolylazo)-o-tolyl]azo]naphthalene-2-sulphonate
    2. Synonyms: sodium 6-hydroxy-5-[[4-(o-tolylazo)-o-tolyl]azo]naphthalene-2-sulphonate;6-Hydroxy-5-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]-2-naphthalenesulfonic acid sodium salt
    3. CAS NO:7357-71-3
    4. Molecular Formula: C24H19N4NaO4S
    5. Molecular Weight: 482.48683
    6. EINECS: 230-889-2
    7. Product Categories: N/A
    8. Mol File: 7357-71-3.mol
  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: /
    5. Density: 1.36g/cm3
    6. Refractive Index: 1.673
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: sodium 6-hydroxy-5-[[4-(o-tolylazo)-o-tolyl]azo]naphthalene-2-sulphonate(CAS DataBase Reference)
    10. NIST Chemistry Reference: sodium 6-hydroxy-5-[[4-(o-tolylazo)-o-tolyl]azo]naphthalene-2-sulphonate(7357-71-3)
    11. EPA Substance Registry System: sodium 6-hydroxy-5-[[4-(o-tolylazo)-o-tolyl]azo]naphthalene-2-sulphonate(7357-71-3)
  • 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: 7357-71-3(Hazardous Substances Data)

7357-71-3 Usage

Uses

Used in Textile Industry:
Acid Orange 8 is utilized as a colorant in the textile industry for dyeing and printing fabrics. Its water solubility and affinity for various textile materials make it an effective choice for imparting color to a wide range of textiles.
Used in Paper Industry:
In the paper industry, Acid Orange 8 serves as a coloring agent for paper products. Its ability to provide a consistent and vibrant color makes it suitable for use in the production of colored paper and other paper-based items.
Used in Leather Industry:
Acid Orange 8 is also employed in the leather industry as a dye for coloring leather goods. Its compatibility with leather materials allows for the creation of a variety of colored leather products, enhancing their visual appeal.
Used in Laboratory Experiments:
Due to its distinctive color and water solubility, Acid Orange 8 is often used in laboratory settings for experiments that require the visualization and tracking of substances. Its ability to stain materials can be useful in various research applications.
Used in Industrial Processes:
In industrial processes, Acid Orange 8 is used for its coloring properties to enhance the appearance of products and materials. Its stability and solubility make it a reliable choice for coloring in a range of manufacturing applications.

Check Digit Verification of cas no

The CAS Registry Mumber 7357-71-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,3,5 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7357-71:
(6*7)+(5*3)+(4*5)+(3*7)+(2*7)+(1*1)=113
113 % 10 = 3
So 7357-71-3 is a valid CAS Registry Number.
InChI:InChI=1/C24H20N4O4S/c1-15-5-3-4-6-21(15)26-25-18-8-11-22(16(2)13-18)27-28-24-20-10-9-19(33(30,31)32)14-17(20)7-12-23(24)29/h3-14,27H,1-2H3,(H,30,31,32)/b26-25+,28-24-

7357-71-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name sodium,(5Z)-5-[[2-methyl-4-[(2-methylphenyl)diazenyl]phenyl]hydrazinylidene]-6-oxonaphthalene-2-sulfonate

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

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More Details:7357-71-3 SDS

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