Categories: Stains Indicator Reagents-69
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Product Short Description: METHYL ORANGE (ACS GRADE)
Product Description:

METHYL ORANGE ACS GRADE excellent quality manufacturer, exporter and supplier. METHYL ORANGE ACS GRADE is an azo dye which works as a pH indicator.

Product Application:
Methyl Orange is the red, weak acid which dissociates in water forming orange neutral molecules.
Product Dose:

Methyl orange is a pH indicator frequently used in titration because of its clear and distinct color variance at different pH values. Methyl orange shows red color in acidic medium and yellow color in basic medium. 

Product Note:
Specifications :-
   Transition range: pH 3.1 - pH 4.4pink - orange yellow
  Appearance of solution: passes test
  Loss on drying (110 °C): ≤ 5
  Transition range (according to ACS): passes test
  Sensitivity test: passes testSpecifications :-
        Transition range: pH 3.1 - pH 4.4pink - orange yellow
  Appearance of solution: passes test
  Loss on drying (110 °C): ≤ 5
  Transition range (according to ACS): passes test
  Sensitivity test: passes test
Product Technical Specification:
C.A.S. No. 547-58-0
CI NO. 13025
M.F. C14H14N3SO3Na
M.W. 327.34gm/mole

Specifications:

Dye Content (by Spectrophotometry) >95%
Solubility 0.1 % (Dist. water) Clear solution
Transition Range pH 3.1-4.4
  Pink Orange-Yellow
Absorption maximum (pH 3.1) ?1max 501-504nm
Absorption maximum (pH 4.4) ?2max 467-471nm
Absorptivity (A1%/1cm at pH 3.1 at ?1max) 1050-1150
Absorptivity (A1%/1cm at pH 4.4 at ?2max) 750-850
Loss On Drying (110°C) <3%
Remarks:
Colour change 
The color change of a pH indicator is caused by the dissociation of the H+ ion from the indicator itself. Recall that pH indicators are not only natural dyes but also weak acids. The dissociation of the weak acid indicator causes the solution to change color.
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