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Phosphorescent materials were discovered in the 1700s, and people have been studying them and making improvements over the centuries.The development of strontium aluminate pigments in 1993 was spurred on by the need to find a substitute for glow-in-the-dark materials with high luminance and long phosphorescence, especially those that used promethium.
Aluminium sulfide is a chemical compound with the formula Al 2 S 3. This colorless species has an interesting structural chemistry, existing in several forms. The material is sensitive to moisture, hydrolyzing to hydrated aluminium oxides/hydroxides. [1] This can begin when the sulfide is exposed to the atmosphere.
Crystal of potassium alum, KAl(SO 4) 2 ·12H 2 O. An alum (/ ˈ æ l ə m /) is a type of chemical compound, usually a hydrated double sulfate salt of aluminium with the general formula X Al(SO 4) 2 ·12 H 2 O, such that X is a monovalent cation such as potassium or ammonium. [1] By itself, "alum" often refers to potassium alum, with the ...
A compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. These semiconductors form for example in periodic table groups 13–15 (old groups III–V), for example of elements from the Boron group (old group III, boron, aluminium, gallium, indium) and from group 15 (old group V, nitrogen, phosphorus, arsenic, antimony, bismuth).
In the extraction of antimony from antimony ores the alkaline sulfide process is employed where Sb 2 S 3 reacts to form thioantimonate(III) salts (also called thioantimonite): [12] 3 Na 2 S + Sb 2 S 3 → 2 Na 3 SbS 3. A number of salts containing different thioantimonate(III) ions can be prepared from Sb 2 S 3. These include: [13]
Aluminium carbide – Al 4 C 3 [12] Aluminium iodide – AlI 3 [13] Aluminium nitride – AlN [14] Aluminium oxide – Al 2 O 3 [15] Aluminium phosphide – AlP [16] Aluminium chloride – AlCl 3 [17] Aluminium fluoride – AlF 3 [18] Aluminium hydroxide – Al(OH) 3 [19] [20] Aluminium nitrate – Al(NO 3) 3 [21] Aluminium sulfide – Al 2 S 3 ...
Magnesium aluminide is an intermetallic compound of magnesium and aluminium.Common phases (molecular structures) include the beta phase (Mg 2 Al 3) and the gamma phase (Mg 17 Al 12), which both have cubic crystal structures.
Some sulfide minerals are economically important as metal ores. The sulphide class also includes the selenides, the tellurides, the arsenides, the antimonides, the bismuthinides, the sulpharsenides and the sulphosalts. [1] [2] Sulphide minerals are inorganic compounds. Pyrite