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Product Name

 O-CRESOLPHTHALEIN (pH INDICATOR)

Article No

 C0079200005

CAS No

 596-27-0

Molecular Formula

 C22H18O4

Molecular Weight

 346.39

Specifications

Appearance:

 Light brown powder

Sulphated ash:

 Max 0.5%

Loss on dryig (at 135°C):

 Max 0.5%

Absorption maxima at pH 11.3:

 565 - 569 nm

pH 8.2-9.8:

 Colourless to violet red

Specific absorptivity A1%/1cm (at lmax):

 Min 1500

Insoluble matter in ethanol:

 Passes test