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Neminath Instruments

Methyl Orange

A pH indicator dye that changes from red in acid to yellow in alkali, commonly used in titrations and laboratory experiments.

Methyl Orange

Application

  • Acid–base titration indicator in chemical analysis
  • Determination of acidity/alkalinity in dairy, chemical, and educational labs
  • Volumetric analysis and teaching experiments
  • pH indication in analytical procedures

Compliance Standard

  • Conforms to AR / LR Grade specifications (as applicable)
  • As per ISO / ACS reagent quality standards
  • Packed and labeled as per GHS laboratory safety norms

Product Description

Methyl Orange is an azo dye indicator supplied as an orange crystalline powder or as a ready indicator solution. It is widely used in acid–base titrations due to its sharp and distinct color change from red in acidic medium to yellow in alkaline medium. Ideal for endpoint detection in strong acid vs. weak base titrations.

Technical Specifications

Parameter

Specification

Chemical Name

Methyl Orange

Chemical Formula

C14H14N3NaO3S

Molecular Weight

327.33 g/mol

Form

Crystalline powder / prepared solution

Grade

AR / LR Grade

Solubility

Soluble in water

Indicator Range (pH)

3.1 – 4.4

Color Change

Red (acidic) to Yellow (alkaline)

Apparatus is Supplied

  • Methyl Orange powder bottle or ready indicator solution bottle
  • Proper labeling and safety instructions

Common Capacities Available

Powder:

  • 10 grams
  • 25 grams
  • 50 grams

Solution:

  • 100 ml
  • 250 ml
  • 500 ml

Optional Accessories

  • Dropper bottle for indicator use
  • SDS / MSDS copy
  • Measuring dropper

Dimensions & Weight (Approx.) (for 100 ml solution pack)

Parameter

Value

Bottle Height

~110 mm

Bottle Diameter

~45 mm

Gross Weight

~120 grams

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