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Product Name

 ALKALI BLUE 6B (INDICATOR) (C. I. NO. 42750)

Article No

 A0016900025

CAS No

 1324-80-7

Molecular Formula

 C37H29N3O3S

Molecular Weight

 595.73

Specifications

Appearance:

 Brownish black powder

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

 Min 600

Transition range:

 pH 11.5 - pH 13.0 Violet -wine red

Absorption maxima at pH 4.0:

 585 - 590 nm

Loss on dryig (at 110°C; 1 hr):

 Max 5.0%