IPC Revision WGDefinition Project D110 Subject: Compounds of alkali metals EPO Rapporteur Proposal IPC range: C01D 2011-05-03 Title – C01D Compounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium Definition statement This subclass covers: - Oxides or hydroxides of sodium, potassium or alkali metals in general and their methods of preparation, purification, concentration, dehydration and the shaped products obtained with, i.e. granules. -Halides of sodium, potassium, or alkali metals in general and their purification, the preparation in shaped products and the prevention of moisture's absorption. - Sulfates or sulfites of sodium, potassium or alkali metals in general, their preparation, purification and dehydration. - Carbonates of sodium, potassium or alkali metals in general and their methods of preparation, their purification, the variation of the water's content of crystallisation, the preparation in shaped products and the prevention of moisture's absorption. - Nitrates of sodium, potassium or alkali metals in general and their methods of preparation, their purification, the preparation in shaped products and the prevention of moisture's absorption. - Compounds of sodium or potassium not provided for elsewhere. - Lithium compounds, i.e. oxides, halides, sulfates, carbonates, nitrates. - Rubidium, caesium or francium compounds Relationship between large subject matter areas References relevant to classification in this subclass This subclass does not cover: Metal hydrides C01B6/00 Salts of oxyacids or halogens C01B11/00 Peroxides, salts of peroxyacids C01B15/00 Sulfides or polysulfides of alkali metals C01B17/22 Thiosulfates, dithionites, polythionates C01B17/64 Compounds containing selenium or tellurium C01B19/00 Binary compounds of nitrogen with metals C01B21/06 Azides C01B21/08 Metal amides C01B21/092 Nitrites C001B21/50 Phosphides C01B25/08 Salts of oxyacids of phosphorous C01B25/16 Carbides C01B31/30 Compounds containing silicon C01B33/00 Compounds containing boron C01B35/00 Cyanides C01C3/08 Salts of cyanic acid C01C3/14 Salts of cyanamide C01C3/16 Thiocyanates C01C3/20 Preparation of elements or inorganic compounds except carbon dioxide by using micro-organisms or enzymes C12P3/00 Burning, calcining lime, magnesite or dolomite C04B2/10 Obtaining metal compounds from mixtures in a metallurgical process C22B Production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis C25B Examples of places where the subject matter of this class is covered when specially adapted, used for a particular purpose, or incorporated in a larger system: Places in relation to which this subclass is residual: Informative references Attention is drawn to the following places, which may be of interest for search: Calcination B01J6/00 General methods of preparing halides C01B9/00 Methods of preparing sulfites in general C01B17/62 Production of calcium suflate cements C04B11/02 Shaped ceramic products characterised by their composition C04B35/00 Special rules of classification within this subclass A compound is classified in the last place priority rule Glossary of terms In this subclass, the following terms (or expressions) are used with the meaning indicated: Synonyms and Keywords In patent documents the following abbreviations are often used: In patent documents the following expressions/words "---", "---" and "---" are often used as synonyms. In patent documents the expression/word "---" is often used instead of "---" which is used in the classification scheme of this subclass. In patent documents the expression/word "---" is often used with the meaning "---"