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Product Name

 ERIOCHROME BLACK T AR (C.I. NO. 14645)

Article No

 E0091300025

CAS No

 1787-61-7

Molecular Formula

 C20H12N3NaO7S

Molecular Weight

 461.38

Specifications

Appearance:

 Brownish black powder

Loss on dryig (at 110°C):

 Max 7.0%

Clarity of solution:

 Passes test

Specific absorptivity A1%/1cm (lmax; 0.02 g/L; buffer pH 10.0; calculated on dried substance):

 Min 300.0

Suitability (as metal indicator):

 Passes test

Absorption maxima at pH 10:

 612 - 616 nm