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Product Name

 CARMINIC ACID (FOR MICROSCOPY)

Article No

 C0060500001

CAS No

 1260-17-9

Molecular Formula

 C22H20O13

Molecular Weight

 492.40

Specifications

Appearance:

 Dark brownish red powder

Loss on drying (at 105°C) :

 Max 7.0%

Assay (acidimetric; on anhydrous basis):

 Min 98%

Suitability (for microscopy):

 Passes test

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

 Min 130

Absorption maxima at pH 3.0:

 490 - 495 nm