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Potassium ferrocyanide

Benedict s quantitative reagent (sugar in urine) This solution contains 18 g copper sulfate, 100 g of anhydrous sodium carbonate, 200 g of potassium citrate, 125 g of potassium thiocyanate, and 0.25 g of potassium ferrocyanide per liter 1 mL of this solution = 0.002 g sugar. [Pg.1188]

Ferric ferrocyanide—Cl Pigment Blue 27, Cl No. 77510. The color additive ferric ferrocyanide is a ferric hexacyanoferrate is a pigment characterized by the stmctural formula Fe4[Fe(CN)g]2ArH20, which may contain small amounts of ferric sodium ferrocyanide and ferric potassium ferrocyanide. ... [Pg.453]

Blau-salz, n. potassium ferrocyanide. -sand, m. coarsest smalt. [Pg.74]

Cyaneisen, n. iron cyanide, -kalium, n. potassium ferrocyanide, -verbindungt /. iron cyanogen compound, specif, a ferrocyanide. [Pg.95]

Ferrocyan-kaUum, n. potassium ferrocyanide. -kupfer, n. cupric ferrocyanide. -natrium, n. sodium ferrocyanide. -silber, n. silver ferrocyanide. -verbindung, /. ferrocyanide. -wasserstoff, m., -wasserstoffsMure, /. ferro-cyanic acid, -zink, n. zinc ferrocyanide. -zinn, n. tin ferrocyanide. [Pg.151]

Gelb-ingwer, m. turmeric, -kali, n. potassium ferrocyanide. -kraut, n. yellowweed, dyer s rocket (Reseda luteola). [Pg.177]

Erlenmeyer An early process for making potassium cyanide from potassium ferrocyanide by heating it with sodium ... [Pg.101]

Fischer A process for removing hydrogen sulfide from coal gas by absorption in an aqueous solution of potassium ferrocyanide and bicarbonate the solution is regenerated electro-chemically with the production of elemental sulfur. Operated at the Hamburg gasworks in the 1930s. [Pg.106]

The corresponding copper ferrocyanide salts of basic dyes are obtained by treating potassium ferrocyanide K4[Fe(CN)6] with sodium sulfite. Dissolved to-... [Pg.556]

The ferrocyanide complex is not easily biodegradable (Belly and Goodhue 1976 Pettet and Mills 1954). However, when an aqueous solution of potassium ferrocyanide was seeded with pure culture of Pseudomona aeruginosa, E. coli, or a mixture of the two bacteria, formation of free cyanide was observed after a delay period of 2 days (Cherryholmes et al. 1985). The rate of free cyanide formation increased with addition of nutrient in water, and a free cyanide concentration <4,000 pg/L was detected at the end of 25 days. It was shown that the free cyanide formation was due to biodegradation and not to either photolysis or hydrolysis. The relevance of this study to the fate of ferrocyanide complexes in natural water or industrial effluents is difficult to assess because cyanide concentrations used in these experiments (3,300 mg/L) are rarely encountered in these media. [Pg.171]

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