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Product Name

 HYDROXY NAPTHOL BLUE (INDICATOR FOR CALCIUM DETERMINATION)

Article No

 H0109900025

CAS No

 63451-35-4

Molecular Formula

 C20H11N2Na3O11S3

Molecular Weight

 620.48

Specifications

Appearance:

 Dark bluish black powder

Solubility (0.1 % in distilled water):

 Passes test

Absorption maxima (A1%; 1 cm; pH 12.0; on dried substance):

 646 nm

Loss on dryig (at 105°C; 1 hr):

 < 5%