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

METHYL RED ACS GRADE excellent quality manufacturer, exporter and supplier.

Product Application:
Product Dose:
Product Note:

 

Products  :  Methyl Red ACS Reag Ph. Eur , pH indicator
C.I. No.  : 13020
C15H 15N3O2  : M.W. 269.30
Absorption maxima :  
1 (pH 4.5) : 523-526 nm
2 (pH 6.2) : 427-437nm
Clarity of alcohol solution :   passes test
  :  
Absorptivity (on dried sub.) :  
(A 1 % 1cm at 1max pH 4.5) : 1330 -1430
(A1 %1cm at 2max ph 6.2) : 700 - 800
Visual transition : From pH 4.2 pink
interval :  to pH 5.5 orange
  : to pH 6.2 yellow
Melting point : 179 -182 oC
Loss on drying (at 1100C) : Max. 5.0%
  :  

 

Product Technical Specification:
C.A.S. No. 493-52-7
CI NO. 13020
M.F. C15H15N3O2
M.W. 269.31gm/mole

Specifications:

Dye Content (by Spectrophotometry) >95%
Transition Range pH 4.2-6.2
  Pink-Yellow
Solubility 0.1% (95% EtOH) Clear solution
Absorption maximum (pH 4.2) ?1max 523-526nm
Absorption maximum (pH 6.2) ?2max 430-434nm
Absorptivity (A1%/1cm at pH 4.2 at ?1max) 1300-1400
Absorptivity (A1%/1cm at pH 6.2 at ?2max) 700-800
Loss On Drying (110°C) <3%
Remarks:
Physical State Solid
Appearance dark red to purple
Odor none reported
pH Not available
Vapor Pressure Negliglble
Vapor Density Not available
Evaporation Rate Negligible
Viscosity Not available
Boiling Point Not available
Freezing/Melting Point 179-182 deg C
Decomposition Temperature Not available
Solubility Insoluble in water
Specific Gravity/Density Not available
Molecular Formula C15H15N3O2
Molecular Weight 269.30
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