List of articles in "Chemical Substance" category - Page 1053

Tourmaline (tur-mah-Leen) is a crystal boron silicate mineral compounded with elements such as aluminium iron magnesium sodium lithium or potassium. Tourmaline is classified as a semi-precious stone and the gemstone […]

Talc (derived from Persian: تالک‎ tālk; Arabic: تلك‎ talk) is a mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2. In loose form it is the […]

Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al2SiO4(FOH)2. Topaz crystallizes in the orthorhombic system and its crystals are mostly prismatic terminated by pyramidal and […]

Tyrosine (abbreviated as Tyr or Y) or 4-hydroxyphenylalanine is one of the 22 amino acids that are used by cells to synthesize proteins. Its codons are UAC and UAU. It […]

Titanite or sphene (from the Greek sphenos (σφηνώ) meaning wedge) is a calcium titanium nesosilicate mineral CaTiSiO5. Trace impurities of iron and aluminium are typically present. Also commonly present are […]

Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. The best known brand name of PTFE is Teflon by DuPont Co.PTFE is a fluorocarbon solid as it […]

Trinitrotoluene /ˌtraɪnaɪtrɵˈtɒljʉ.iːn/ (TNT) or more specifically 246-trinitrotoluene is a chemical compound with the formula C6H2(NO2)3CH3. This yellow-colored solid is sometimes used as a reagent in chemical synthesis but it is […]

Toluene /ˈtɒluːiːn/ formerly known as toluol /ˈtɒluːɒl/ is a clear water-insoluble liquid with the typical smell of paint thinners. It is a mono-substituted benzene derivative i.e. one in which a […]

Thiamine or thiamin or vitamin B1 (/ˈθaɪ.əmɨn/ THY-ə-min) named as the thio-vitamine (sulfur-containing vitamin) is a water-soluble vitamin of the B complex. First named aneurin for the detrimental neurological effects […]

Sapphire (Greek: σάπφειρος; sappheiros ‘blue stone’ which probably referred instead at the time to lapis lazuli) is a gemstone variety of the mineral corundum an aluminium oxide (α-Al2O3). Trace amounts […]