| antimony oxide | Sb2O3;used technically in paints and flame-proofing; also used as an expectorant and emetic. Synonym: antimonous oxide, antimony oxide, flowers of antimony. Abbreviation: Sb (05 Mar 2000) |
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| arsenous oxide | As2O3;dissolves in water to give arsenous acid, H3AsO3; used in the treatment of skin diseases and malaria, and as a tonic; also used externally as a caustic. Synonym: arsenous oxide, white arsenic. (05 Mar 2000) |
| barium oxide | BaO;it is caustic, forming the strong base, Ba(OH)2, in water; used as a dehydrating agent. Synonym: baryta. (05 Mar 2000) |
| basic oxide | A base anhydride; an oxide of an electropositive element or radical; it can combine with water to form a base. (05 Mar 2000) |
| benzo(a)pyrene-4,5-oxide hydratase | <enzyme> Aspect of epoxide hydrolase, EC 3.3.2.3 Registry number: EC 3.3.2.- (26 Jun 1999) |
| benzopyrene 4,5-oxide reductase | <enzyme> Nadph and cytochrome p-450-dependent reduces epoxide to glycol Registry number: EC 1.- Synonym: benzo(a)pyrene 4,5-epoxide reductase, bap 4,5-or, benz(a)pyrene 4,5-oxide reductase (26 Jun 1999) |
| bismuth chloride oxide | BiOCl;basic bismuth chloride, used for the same purposes as the subnitrate. Synonym: bismuth chloride oxide, bismuthyl chloride. (05 Mar 2000) |
| bismuth oxide | Bi2O3;used for the same purposes as the subnitrate. (05 Mar 2000) |
| calcium oxide | <chemical> A chemical compound with the formula CaO which is a whitish, odourless solid that does not dissolve well in water. It will, however, react with water (H20) to form calcium hydroxide (CaOH, a base). It has a melting point of 2614 degrees Celsius and a boiling point of 2850 degrees Celsius. It can be made by heating calcium carbonate (CaCO3, limestone) until carbon dioxide (CO2) is released. It has a great many industrial uses. (09 Oct 1997) |
| magnesium oxide | <chemical> Magnesium oxide (mgo). An inorganic compound that occurs in nature as the mineral periclase. In aqueous media combines quickly with water to form magnesium hydroxide. It is used as an antacid and mild laxative and has many nonmedicinal uses. Pharmacological action: antacids, cathartic. Chemical name: Magnesium oxide (MgO) (12 Dec 1998) |
| red oxide of lead | A bright orange-red powder that turns black when heated; used in ointments and plasters. Synonym: red lead, red oxide of lead. (05 Mar 2000) |
| mercuric oxide | The red precipitate of HgO; it has been used externally as an antiseptic in chronic skin diseases and fungus infections. The yellow precipitate of HgO; used externally as an antiseptic in the treatment of inflammatory conditions of the eyelids and the conjunctivae. (05 Mar 2000) |
| modified zinc oxide-eugenol cement | Dental cement obtained by mixing zinc oxide and eugenol with one or more additives. (05 Mar 2000) |
| polyvinylpyridine n-oxide | <chemical> Poly-2-vinylpyridine-n-oxide. Inhibits the cytotoxic action of quartz and is reported to have delayed the development of experimental silicosis in rats. Chemical name: Pyridine, 2-ethenyl-, 1-oxide, homopolymer (12 Dec 1998) |
| stannic oxide | SnO2;used in industry; it is a cause of pneumoconiosis. Synonym: tin oxide. (05 Mar 2000) |