Products / pH Indicators

ALIZARIN RED S Print Download

C.A.S. No. 130-22-3
CI NO. 58005
M.F. C14H7NaO7S
M.W. 342.26gm/mole

Specifications:

Dye Content (by Spectrophotometry) >70%
Transition Range pH 4.3-6.3
Yellow-Pink
pH 9.4-12.0
Brown Orange-Violet
Solubility 0.1% (Dist. Water) Clear solution
Absorption Max (0.1N NaOH) ?1max 553-559nm
Absorption Max (0.1N NaOH) ?2max 592-599nm
Absorptivity (A1%/1cm at 556 ?1max) >350
Absorptivity (A1%/1cm at 595 ?2max) >325
Loss On Drying (110°C) <5%
Suitability for microscopy Passes test
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