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Methyl Red Sodium Salt C.I. 13020 Group Picture

Methyl Red Sodium Salt C.I. 13020

£10.64 to £43.88

Code: Please choose option from drop down above
  Pack Size List Price Qty  
photo_camera 10g
RRBD70-U
£10.64
photo_camera 25g
RRBD70-W
£18.69
photo_camera 50g
RRBD70-2W
£26.07
photo_camera 100g
RRBD70-X
£43.88

Methyl red is an indicator dye that turns red in acidic solutions. It is a pH indicator, turning red under pH 4.4, yellow over pH 6.2, and orange in between those values. It is used in microbiology in the Voges-Proskauer test to identify bacteria that produce stable acids through mixed acid fermentation of glucose.

  • pH Indicator
  • Identification of bacteria in Microbiology

C.I.13020

Dye Content: >90%
Molecular Formula: C15H14N3NaO3
Molecular Weight: 291.29 g/mol

Transition Range: pH4.2 (Violet Red) - pH6.2 (Brownish/Yellow)
Maximum Absorption (pH4.2): 523-527nm
Maximum Absorption (pH6.2): 430-434nm
Absorptivity(A1%/1cm@pH4.2): 1200-1300
Absorptivity(A1%/1cm@pH4.2): 675-735
Loss on Drying: <5%

Cas Number: 845-10-3

Einecs Number: 212-682-9

HS Code / Commodity Code: 29270000

Hazard Phrases: H0001

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