Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid.


Antimony is a chemical element with the symbol Sb and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl.

Antimony Trioxide

Antimony(III) oxide is the inorganic compound with the formula Sb?O?. It is the most important commercial compound of antimony. It is found in nature as the minerals valentinite and senarmontite. Like most polymeric oxides, Sb?O? dissolves in aqueous solutions with hydrolysis.


Bismuth is a chemical element with the symbol Bi and atomic number 83. It is a pentavalent post-transition metal and one of the pnictogens with chemical properties resembling its lighter group 15 siblings arsenic and antimony.

Bismuth oxide

Bismuth trioxide is commercially made from bismuth subnitrate. The latter is produced by dissolving bismuth in hot nitric acid. Addition of excess sodium hydroxide followed by continuous heating of the mixture precipitates bismuth(III) oxide as a heavy yellow powder.


Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury.

Calcium Aluminium Alloy

Cadmium is added principally to alloys based on copper, tin, lead and zinc although several ... Zinc-cadmium alloys are useful for soldering aluminium.

Calcium lump and granules

Calcium granules of microscopic size are found among the packed extracellular particles and droplets and in smooth-muscle cells isolated among them. ... Over time, calcium lumps and plates form through accretion of adjacent extracellular calcium granules.


Cobalt is a chemical element with the symbol Co and atomic number 27. Like nickel, cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.

Cobalt Oxide

Cobalt(II) oxide or cobalt monoxide is an inorganic compound that appears as olive-green to red crystals, or as a greyish or black powder. It is used extensively in the ceramics industry as an additive to create blue colored glazes and enamels as well as in the chemical industry for producing cobalt(II) salts.

Manganous Manganic Oxide

Manganese (IV) oxide is the inorganic compound with the formula MnO2. ... Moreover, MnO2 increases the life-span of a Leclanche dry cell battery; to increase the rate of removal of hydrogen bubbles in a Leclanche dry cell. MnO2 is also used for dry-cell batteries, such as the alkaline battery and the zinc-carbon battery.

Selenium Granules

Selenium is a non-metal with several allotropes: a black, vitreous form with an irregular crystal structure three red-colored forms with monoclinic crystal structures and a gray form with a hexagonal crystal structure, the most stable and dense form of the element.

Selenium Metal Powder

Selenium Metal Powder is a multi-brand distributor and agent of chemical products, specializing in salts and non-ferrous metal oxides (99, 9%). Selenium metal occurs as a crystalline powder.


Tellurium is a chemical element with the symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens. It is occasionally found in native form as elemental crystals.