OM SHREE GANESHYA NAMAH

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Product Name

 ALIZARINE RED S AR (pH INDICATOR) (C. I. NO. 58005)

Article No

 A0016500100

CAS No

 130-22-3

Molecular Formula

 C14H7NaO7S

Molecular Weight

 342.3

Specifications

Appearance:

 Red powder

Absorptivity (A 1%/1cm; at lmax):

 Min 350.0

Solubility (0.1% in water):

 Clear solution

Absorption maxima in 0.1 N NaOH :

 553-559 nm

pH 9.4-12.0:

 Brown orange-Violet

pH 4.3-6.3 :

 Yellow-Pink

Loss on drying (at 110°C):

 Max 5.0%

Dye content (by spectrophotometry):

 Min 70.0%