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A Schlenk flask, or Schlenk tube, is a reaction vessel typically used in air-sensitive chemistry, invented by Wilhelm Schlenk. It has a side arm fitted with a PTFE or ground glass stopcock , which allows the vessel to be evacuated or filled with gases (usually inert gases like nitrogen or argon ).
The coating of the alumina platelets with high-refractive metal oxides, such as with titanium dioxide and iron(III) oxide leads to strongly reflecting effect pigments. These pigments possess a strong glitter effect. The coating process is analogous to that used for metal oxide mica pigments except it starts from an aqueous suspension of Al 2 O ...
Schlenk can refer to: People. Wilhelm Schlenk (1879-1943), German chemist; In chemistry. Schlenk flask; Schlenk line. or Schlenk apparatus; Schlenk equilibrium;
Arsenic pigments. Realgar: As 4 S 4 - a highly toxic natural pigment. Cadmium pigments. Cadmium red (PR108): cadmium sulfo-selenide (Cd2SSe). Cerium pigments. Cerium sulfide red (PR265). Iron oxide pigments. Sanguine, Caput mortuum, Indian red, Venetian red, oxide red (PR102). Red ochre (PR102): anhydrous Fe 2 O 3.
Wilhelm Johann Schlenk (22 March 1879 – 29 April 1943) was a German chemist. He was born in Munich and also studied chemistry there. Schlenk succeeded Emil Fischer at the University of Berlin in 1919.
A Schlenk line with four ports. The cold trap is on the right. Close-up view, showing the double-oblique stopcock, which allows vacuum (rear line) or inert gas (front line) to be selected. The Schlenk line (also vacuum gas manifold) is a commonly used chemistry apparatus developed by Wilhelm Schlenk. [1] It consists of a dual manifold with ...
Pigments for sale at a market stall in Goa, India. A pigment is a powder used to add color or change visual appearance. Pigments are completely or nearly insoluble and chemically unreactive in water or another medium; in contrast, dyes are colored substances which are soluble or go into solution at some stage in their use.
A metallic color is a color that appears to be that of a polished metal. The visual sensation usually associated with metals is its metallic shine . This cannot be reproduced by a simple solid color , because the shiny effect is due to the material's brightness varying with the surface angle to the light source.
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