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Lab Pro Modified Methyl Orange Indicator #2, 1Ltr - MO4194-1

$79.17
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SKU: MO4194-1
California prop 65
Description
  • Product Name
    Modified Methyl Orange Indicator #2
  • Catalog Number
    MO4194-1
  • CAS Number
    547-58-0
  • Grade
    ACS Reagent
  • Packaging
    1 L Container

Description

What is Lab Pro Modified Methyl Orange Indicator #2 (MO4194-1)?

Lab Pro Modified Methyl Orange Indicator #2 is a methyl orange–based indicator supplied as a prepared indicator solution. Methyl Orange is an azo dye that functions as a pH indicator and changes color depending on the acidity of the solution.

Methyl orange:

  • Is the sodium salt of p-dimethylaminoazobenzenesulfonic acid
  • Appears as an orange-colored synthetic dye
  • Turns red in acidic solutions and yellow in basic solutions

This indicator is used in analytical, biological, and diagnostic applications where pH-dependent color change is required.

Key Features

  • Methyl Orange indicator
  • ACS reagent grade
  • Dye content 85%
  • pH-sensitive color change
  • Supplied as a prepared indicator solution

Common Applications

  • pH indicator in cell sap
  • Counterstain to crystal violet in staining pollen tubes
  • Component of polychrome histological stains
  • Solution indicator in assays of oxalic and malonic acids
  • Biomedical applications, including film dosimeters and bromide ion assays

Packaging Details

  • Packaged In: 1 L container
  • Includes: Single unit

Legal & Safety Notice

This product is supplied for laboratory and analytical use. Proper handling and use in accordance with applicable laboratory procedures is the responsibility of the end user.

Standards and Certifications

  • Lab Pro CofA
  • Lab Pro SDS
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Properties

Chemical Name Methyl Orange
Synonyms 4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid sodium salt
Acid Orange 52
Helianthin
Orange III
Empirical Formula C14H14N3NaO3S
CAS Number 547-58-0
Molecular Weight 327.33
Color Index Number 13025
Grade ACS reagent
Color Orange


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FAQs

What is Modified Methyl Orange Indicator #2 used for?

Modified Methyl Orange Indicator #2 is used as a pH indicator in analytical, biological, and diagnostic applications. It provides a clear color change from red in acidic solutions to yellow in basic solutions, supporting pH monitoring in assays, staining procedures, and laboratory analytical workflows.

How does methyl orange function as a pH indicator?

Methyl orange is an azo dye that changes color based on solution acidity. It appears red under acidic conditions and yellow under basic conditions, making it useful for detecting pH transitions in titrations, biochemical assays, and analytical methods requiring a visible pH-dependent response.

What does ACS reagent grade and 85% dye content mean?

ACS reagent grade indicates the indicator meets American Chemical Society purity standards. An 85% dye content ensures consistent color strength and performance, supporting reliable results in analytical, biomedical, and research applications where indicator quality and reproducibility are important.

Is this indicator supplied ready to use?

Yes, this product is supplied as a prepared indicator solution in a 1-liter container. The ready-to-use format eliminates preparation steps, reduces variability, and supports efficient use in routine laboratory, analytical, and diagnostic procedures.

How should Modified Methyl Orange Indicator #2 be handled and stored?

Store the indicator tightly sealed at room temperature and protect it from contamination and excessive light exposure. Use clean dispensing practices to maintain solution integrity. Follow standard laboratory safety procedures and consult the Safety Data Sheet for proper handling and disposal guidance.