Indigo Carmine, 80+% (Dye Content), 25g For Research & Development Not for drug, human, animal, or food use
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Specifications: Appearance (Color) Purple Appearance (Form) Powder Dye Content (Dried Basis) 80+% Loss on Drying <5.0% Visual Transition Interval from pH 11.5 (blue) to pH 14.0 (yellow) Aqueous Solubility 1g in 100ml at 25 Deg. C Subsidiary Dyes, excluding disodium-3,3-dioxo-2,2-bi-indolylidine-5,7-disulfonate <1% Dye Intermediates <0.5% Arsenic <8 ppm Lead <0.001% Sulfur 13.0-14.0% Mercury <1 mg/kg Cadmium <1 mg/kg Heavy Metals (as Pb) <40 mg/kg
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