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CAS

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5456-90-6

[(E)-(2-methylphenyl)diazenyl]propanedinitrile, commonly known as Methyl orange, is a synthetic azo dye and a pH indicator. It is characterized by its orange-red color and is sparingly soluble in water. With a molecular formula of C15H15N3O2 and a molecular weight of 269.3 g/mol, Methyl orange is widely used in various applications due to its ability to change color based on the acidity or alkalinity of a solution.

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  • 5456-90-6 Structure

  • Basic information

    1. Product Name: [(E)-(2-methylphenyl)diazenyl]propanedinitrile
    2. Synonyms:
    3. CAS NO:5456-90-6
    4. Molecular Formula: C10H8N4
    5. Molecular Weight: 184.1973
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 5456-90-6.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: 290.4°C at 760 mmHg
    3. Flash Point: 129.4°C
    4. Appearance: N/A
    5. Density: 1.1g/cm3
    6. Vapor Pressure: 0.00207mmHg at 25°C
    7. Refractive Index: 1.582
    8. Storage Temp.: N/A
    9. Solubility: N/A
    10. CAS DataBase Reference: [(E)-(2-methylphenyl)diazenyl]propanedinitrile(CAS DataBase Reference)
    11. NIST Chemistry Reference: [(E)-(2-methylphenyl)diazenyl]propanedinitrile(5456-90-6)
    12. EPA Substance Registry System: [(E)-(2-methylphenyl)diazenyl]propanedinitrile(5456-90-6)

  • 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: 5456-90-6(Hazardous Substances Data)

5456-90-6 Usage

Uses

Used in Laboratory Applications:
[(E)-(2-methylphenyl)diazenyl]propanedinitrile is used as a pH indicator for determining the acidity or alkalinity of a solution in laboratory settings. Its color change, from red to orange, helps identify the endpoint of a titration process.
Used in Textile Industry:
In the textile industry, [(E)-(2-methylphenyl)diazenyl]propanedinitrile is used as a colorant and dye for various fabrics. Its vibrant orange-red color adds visual appeal to the final products.
Used in Printing Industry:
Similarly, in the printing industry, [(E)-(2-methylphenyl)diazenyl]propanedinitrile is utilized as a dye for inks and other printing materials, providing a distinct and eye-catching color to the printed items.

Check Digit Verification of cas no

The CAS Registry Mumber 5456-90-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,4,5 and 6 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 5456-90:
(6*5)+(5*4)+(4*5)+(3*6)+(2*9)+(1*0)=106
106 % 10 = 6
So 5456-90-6 is a valid CAS Registry Number.

5456-90-6SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-[(2-methylphenyl)diazenyl]propanedinitrile

1.2 Other means of identification

Product number -
Other names 2-Tolyl-azo-malonitril

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

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:5456-90-6 SDS

5456-90-6Relevant articles and documents

DFT, FT-IR, FT-Raman and NMR studies of 4-(substituted phenylazo)-3,5- diacetamido-1H-pyrazoles

Kinali, Selin,Demirci, Serkan,?ali?ir, Zühre,Kurt, Mustafa,Ata, Ahmet

scheme or table, p. 254 - 258 (2011/06/27)

We present a detailed analysis of the structural and vibrational spectra of some novel azo dyes. 2-(Substituted phenylazo)malononitriles were synthesized by the coupling reaction of the diazonium salts, which were prepared with the use of various aniline

Pyridazine derivatives and related compounds. 23*. synthesis of 3-substituted pyrazolo[3,4-c] pyridazines and their application as disperse dyes

Deeb,Yassin,Ouf,Shehta

experimental part, p. 212 - 222 (2011/08/21)

Acetylacetone and malononitrile were coupled with diazotized arylamines to give arylazoacetylacetones and arylazomalononitriles. When refluxed with 3-hydrazino-4,5-diphenyl-1H-pyrazolo-[3,4-c]pyridazine in the presence of ethanol/HCl, they yielded the corresponding 3-[4-(arylazo)-3,5-dimethylpyrazol- 1-yl]- and 3-[3,5-diamino-4-(arylazo)pyrazol-1-yl]-4,5-diphenyl-1H-pyrazolo[3,4- c]pyridazine dyes. The dyes were applied to polyester and polyamide fabrics, and their spectral and fastness properties were measured.

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