Ads
related to: brick red selenium powder
Search results
Results From The WOW.Com Content Network
Selenium is a chemical element; it has the symbol Se and atomic number 34. It has various physical appearances, including a brick-red powder, a vitreous black solid, and a grey metallic-looking form. It seldom occurs in this elemental state or as pure ore compounds in Earth's crust.
Selenium: Azure blue Sn Tin: Blue-white Sr Strontium: Crimson to scarlet red; yellowish through green glass and violet through blue cobalt glass Ta Tantalum: Blue Te Tellurium: Pale green Ti Titanium: Silver-white Tl Thallium: Pure green V Vanadium: Yellowish green W Tungsten: Green Y Yttrium: Carmine, crimson, or scarlet red Zn Zinc: Colorless ...
Selenium, like manganese, can be used in small concentrations to decolorize glass, or in higher concentrations to impart a reddish color, caused by selenium nanoparticles dispersed in glass. It is a very important agent to make pink and red glass. When used together with cadmium sulfide, [9] it yields a brilliant red color known as "Selenium Ruby".
Strontium carbonate is used in the manufacturing of red fireworks. [75] Pure strontium is used in the study of neurotransmitter release in neurons. [76] [77] Radioactive strontium-90 finds some use in RTGs, [78] [79] which utilize its decay heat. Barium is used in vacuum tubes as a getter to remove gases. [61]
A selenocyanate is an ion or chemical compound that contains the -SeCN group, which could be in the form of an anion, SeCN −.Organic selenocyanates also exist. Some complex ions with transition metals such as silver and mercury (mercuris
During a water bath, which is usually 4–10 minutes, the solution should progress through the colors of blue (with no reducing sugar present), orange, yellow, green, red, and then brick red precipitate or brown (if a high concentration of reducing sugar is present). A color change would signify the presence of a reducing sugar.