Metal oxides and hydroxides

Soda

Soda, in trade known as soda ash and historically as washing soda, is sodium carbonate, an alkali refined from trona and used chiefly in glassmaking.

Sodium hydroxide

Sodium hydroxide (NaOH), also known as caustic soda, is a white, corrosive solid and one of the most widely produced industrial bases, used in papermaking and soap.

Sodium nitrite

Sodium nitrite (NaNO2) is the sodium salt of nitrous acid, a white crystalline oxidizer used as a preservative and color fixative in cured meats and as a cyanide-poisoning antidote.

Sodium oxide

Sodium oxide (Na2O), also called sodium monoxide, is a white, strongly basic ionic solid that reacts violently with water and is a key component of soda-lime glass.

Sr3Ir2O7

Sr3Ir2O7, known as strontium iridate, is a bilayered perovskite iridate studied as a candidate spin-orbit Mott insulator; it orders antiferromagnetically along the c axis at 285 K.

SrIrO3, strontium iridate, is a 5d transition-metal oxide, the n = ∞ end member of the Ruddlesden–Popper iridate series, a paramagnetic semimetal and Dirac nodal-line semimetal studied for correlated topological states.

SrIrO3 perovskite

SrIrO3 perovskite is a strontium iridium oxide, more than ten times more active than IrO2 for acidic oxygen evolution, whose surface reconstructs into catalytically active amorphous IrOx.

Strontium oxide

Strontium oxide, also called strontia or strontium monoxide, is the strongly basic oxide of strontium, a grayish-white ionic solid used chiefly as a glass modifier and fluxing agent.

Superoxide

Superoxide, also written O₂•⁻, is the radical anion of oxygen formed when a single electron is added to molecular oxygen, occurring in salts like potassium superoxide and in cells.

Thorium monoxide

Thorium monoxide (ThO) is a heavy polar diatomic molecule of thorium and oxygen, best known as the working molecule of the ACME electron electric dipole moment searches.

Tin dioxide

Tin dioxide (SnO₂), also called stannic oxide, is an inorganic compound of tin and oxygen that occurs naturally as cassiterite, the principal ore of tin.

Tin(IV) oxide

Tin(IV) oxide (SnO₂), also called tin dioxide or stannic oxide, is a white crystalline oxide of tin that occurs as the mineral cassiterite, the world's predominant ore of tin.

Triuranium octoxide

Triuranium octoxide (U₃O₈) is a mixed-valence oxide of uranium, the standard traded form of uranium concentrate known as yellowcake, and the feed material for converting uranium into nuclear reactor fuel.

Tungsten trioxide

Tungsten trioxide (WO₃) is an n-type semiconductor oxide of tungsten, best known as the standard electrochromic material in smart windows and the intermediate from which tungsten metal is made.

Uranium trioxide

Uranium trioxide (UO₃) is the highest oxide of uranium, in which uranium is in the +6 oxidation state, and serves as a high-purity intermediate in uranium refining.

Vanadium dioxide

Vanadium dioxide is a transition metal oxide that undergoes a reversible metal-to-insulator transition at about 68 °C, changing its electrical and optical properties, most prominently in thermochromic smart windows.

Vanadium pentoxide

Vanadium pentoxide (V₂O₅) is the most stable oxide of vanadium, used industrially as an oxidation catalyst, as the feedstock for vanadium metal and ferrovanadium, and in battery electrodes.