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Product Name

 NEUTRAL RED 60% (pH INDICATOR) (C. I. NO. 50040)

Article No

 N0142100025

CAS No

 553-24-2

Molecular Formula

 C15H17ClN4

Molecular Weight

 288.78

Specifications

Appearance:

 Dark green powder

Loss on dryig (at 110°C):

 Min 12%

Dye content (by spectrophotometry):

 Min 60%

Absorption maxima (50% ethanol + 2 ml acetic acid):

 539 - 544 nm

Absorptivity (A 1%/1cm; at lmax; in 50% ethanol + 2 ml acetic acid):

 Min 900

Solubility (0.1% in 50% ethanol):

 Clear solution

Transition range (pH 6.8 - 8.0):

 Violet Red - Yellow