SIGMA-ALDRICH CORPORATION Part No. C8385-500G
Formula: C₆H₅K₃O₇ + H₂O Formula Weight: 324.41
CAS No.: 6100-05-6 Purity: ≥98% (GC/titration) Packaging: 1 kg in poly bottle Packaging: 500 g in poly bottle

SIGMA-ALDRICH CORPORATION Part No. 244023-500G
Synonyms: Potassium ferricyanide; Red prussiate Formula: K₃Fe(CN)₆ Formula Weight: 329.24
CAS No.: 13746-66-2 Purity: ≥99.0% Supplemental Hazard Statements: Contact with acids liberates very toxic gas. Packaging: 100, 500 g in poly bottle Packaging: 12 kg in fiber drum Packaging: 5 g in glass bottle

SIGMA-ALDRICH CORPORATION Part No. PVP40-500G
Synonyms: PVP; Polyvidone; Povidone Formula: (C₆H₉NO)_n
CAS No.: 9003-39-8 Application: Complexes with phenolics and alkaloids for their removal from plant samples, thus preventing their modification of proteins and any interference they may cause in spectrophotometric determinations of protein content. This is also reported to improve stability of enzymes. Other Notes: Polyvinylpyrrolidone is a component of Denhardt′s Solution and is included at a concentration of 1% (w/v) in the standard 50X stock solution. Packaging: 1 kg in poly bottle Packaging: 5 kg in poly drum Packaging: 50, 100, 500 g in poly bottle