Sodium dichromate applications

Evaporators have performed successfully in a number of industrial applications. Typical materials that are processed in evaporators include Caustic Soda, Caustic Potash, Sodium Carbonate, Sodium Dichromate, Sodium Nitrate, Ammonium Nitrate, Phosphoric Acid Superacid, Potash, Urea, Glue, Glycerine,... 

Methyl-2-pentenal was oxidised to the acid in a process involving addition over a period into a mixture of acetic acid and sodium dichromate at 50°C. Addition of the aldehyde, effected by sucking it into the reactor by application of vacuum, was entrusted to an inexperienced operator, but was apparently too fast and the exotherm led to a runaway and eruption of the reactor contents. 

Chromium oxides with a minimal sulfur content are preferred for metallurgical applications. These are obtained by reacting sodium dichromate with ammonium chloride or sulfate in a deficiency of 10 mol% [3.51]. Chromium (III) oxides with a low sulfur content can also be obtained by thermal aftertreatment [3.52], Thermal decomposition of chromic acid anhydride (Cr03) yields high-purity chromium(III) oxide [3.53],... 

The sodium dichromate-sulfuric acid process has been found by some to be superior to other ferric chloride methods for the prebond treatment of copper. This dichromate-sulfuric acid method is also defined by ASTM D 2651. Nitric acid and ferric chloride etching processes have also been found to be useful for copper, brass, and bronze substrates in certain applications. 

Sodium Dichromate saturated 20 30 9 Neglible effect should be suitable for all applications Pro-Fax Himont Specimen 76X0.64 mm (3X0.025 in) dumbell specimen, unstressed... 

Solubilized vat Cotton, wool, cellulose, and protein fibers silk Impregnated fiber when treated with an oxidized agent usually sulfuric acid and sodium nitrite for cotton dichromate wool and silk therefore, no alkali is involved. This class is applicable to cellulose and protein fibers Dyeing, printing and wool in fast shades... 

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