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

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LabPro Inc. logo
  • All Products
    All Categories
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    • Bags
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    • Buffers, Standards & Solutions
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    • Cleanroom and Critical Environment
    • Colony Counters
    Covid-19 Supplies
    • Containers
    • Crucibles
    • Cryogenic Supplies
    • Culture Media
    • Culture Plates & Microplates
    • Cuvettes & Accessories
    • Cylinders
    • Desiccators
    • Dispensers & Burettes
    • Distillation
    • Electrophoresis Reagents
    • Evaporating Dishes
    • ESD & Static Control
    • Film and Paper
    • Filtration

    • Flasks
    • Funnels
    • Furnaces & Ovens
    • Furnishings & Equipment
    • Furnishing, Racks and Storage
    • Gloves
    • Hand Tools
    • Hydrometers
    • Ice Buckets
    • Indicator Paper
    • Inoculating Loops & Spreaders
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    • Spill Protection
    • Spot Plates & Streak Plates
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    • Sticky Mats & Rollers
    • Stoppers & Corks
    • Swabs & Applicators
    • Syringes & Needles
    • Thermometers
    • Timers & Controllers
    • Trays & Pans
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    • Modular Cleanroom Solutions
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    • New Lab Startups
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    • 503B Outsourcing Facilities
    • Aerospace
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    • Cleanroom Manufacturing
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    • Defense

    • Electronics Manufacturing
    • Government Contractors
    • Industrial Manufacturing
    • Janitorial Supplies & Facilities Maintenance
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    • Pharmacy Compounding
    • Science Education and Teaching Institutions
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    • Vendor Managed Inventory Guide
    • Alconox Detergent Selection Guide
    • Botanicals Labware Guide
    • Common Chemical Grades
    • Common Chemical Names
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    • Frequently Used Chemicals
    • Glove Selection Guide
    • Los Angeles Lab Supplies

    • Cleanroom PPE & Garment Selection Guide
    • Microscope Guide
    • Nitinol Wire Cutters
    • Orange County Lab Supplies
    • San Diego Lab Supplies
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    • Tweezers Selection Guide
    • Where to Buy Deionized Water
    • Wiper Selection Guide
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    All Blogs
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    • Calibration of Lab Equipment
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Lab Pro Protective Face Shield Mask - 50% OFF

$4.00

Lab Pro Protective Face Shield Mask - 50% OFF

Lab Pro Masks LP-MaskSurg-W

$1.25

Lab Pro Masks LP-MaskSurg-W

Lab Pro 3ply Earloop Disposable Mask (Non-Surgical) (Box of 50) - 84% OFF

$9.00

Lab Pro 3ply Earloop Disposable Mask (Non-Surgical) (Box of 50) - 84% OFF

Tians Face Mask 3 Layer Spp, Latex Free Elastic Earloop & Clip, Blue-500/Cs - 40578C-RS5

$57.00

Tians Face Mask 3 Layer Spp, Latex Free Elastic Earloop & Clip, Blue-500/Cs - 40578C-RS5

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

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Vistage
ILDA
Thomasnet
BioLink Depot
SoCalBio
Laboratory Products Association
Vistage
ILDA
Thomasnet
BioLink Depot
Get updates on the latest products, promos, and discounts!

A monthly digest of the latest news, articles, and resources.

Products
  • Covid-19 Supplies
  • Chemicals & Reagents
  • Laboratory Equipment
  • LabClean Wipes
  • Microscopes & Accessories
COMPANY POLICIES
  • Privacy Policy
  • Return Policy
  • Tax & Shipping Policy
  • Terms of Service
Contact
Phone
888-4-LABPRO (888-452-2776)
Email
info@labproinc.com
Northern California:
1290 Anvilwood Ct Sunnyvale, CA 94089
Lab Pro SoCal:
16035 Arrow Hwy Irwindale, CA 91706
LabPro Inc. logo

Improving people's lives through innovative laboratory product since 1979

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© 2026 LabPro Inc. All rights reserved.

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

1

$79.17

Share

Product Number:MO4194-1
Warning:California prop 65

Categories

ChemicalsVolumetric SolutionsLaboratory Chemicals by Lab ProAcids by Lab Pro

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
SHOW MORE

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


Articles

  • Top 5 Uses Of Methyl Ethyl Ketone (MEK)
Lab Pro Modified Methyl Orange Indicator #2, 1Ltr - MO4194-1 - bad85fbae4504224667c256a85d064de_430x_7feff488-dac2-49e7-b89d-e7f808ef6cfa

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

1

$79.17

Share

Product Number:MO4194-1
Warning:California prop 65

Categories

ChemicalsVolumetric SolutionsLaboratory Chemicals by Lab ProAcids by Lab Pro

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
SHOW MORE

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


Articles

  • Top 5 Uses Of Methyl Ethyl Ketone (MEK)
Lab Pro Modified Methyl Orange Indicator #2, 1Ltr - MO4194-1 - bad85fbae4504224667c256a85d064de_430x_7feff488-dac2-49e7-b89d-e7f808ef6cfa