carbonate magnesium chloride potassium fluoride sodium iodide lactate nitrate nitrite octanoate phosphate sulfate tartrate 2.5.7 acids and other chiral substances Many chiral substances, such as amino acids, can exist as a single optical isomer (enantiomer) or as a mixture of isomers. The reference quoted for the name will define the isomer or mixture. In the case of amino acids, which mainly exist naturally in the l-form, the prefix has been omitted from the approved name, even if it is included in the name ‘l-’ shown in the reference. The designators, and should be included in the of amino acids that occur ‘dl-’ ‘d-’ naturally in these forms, to distinguish them from the form. This is consistent with INN ‘l’ naming policy. Inclusion of and in the name improves the amount of information ‘d-’ ‘dl-’ provided by the name and reduces ambiguity. The designators and should not be used for chiral molecules, unless used in the ‘R’, ‘RS’ ‘S’ reference or required to distinguish between different chiral molecules. 2.5.8 Metals For metals, the common name should be used; for example, and rather than ‘copper’ ‘iron’, or and or Common names are more readily understood ‘cuprous’ ‘cupric’, ‘ferrous’ ‘ferric’. by consumers. Where a single oxidation state occurs, that state should be included in the name (e.g. copper (I), copper (II), iron (II), iron (III)). Where mixed oxidation states occur, the names would merely be copper, iron, and so on (e.g. iron phosphate). 2.5.9 Colour names New names for ingredients used as colours should not include the Colour Index (CI) number. Separate names will be created for each colour and its lake (e.g. aluminium or calcium lake), as required (e.g. erythrosine and erythrosine aluminium lake).
carbonate magnesium chloride potassium fluoride sodium iodide lactate nitrate nitrite octanoate phosphate sulfate tartrate 2.5.7 acids and other chiral substances Many chiral substances, such as amino acids, can exist as a single optical isomer (enantiomer) or as a mixture of isomers. The reference quoted for the name will define the isomer or mixture. In the case of amino acids, which mainly exist naturally in the l-form, the ‘l-’ prefix has been omitted from the approved name, even if it is included in the name shown in the reference. The designators, ‘dl-’ and ‘d-’ should be included in the of amino acids that occur naturally in these forms, to distinguish them from the ‘l’ form. This is consistent with INN naming policy. Inclusion of ‘d-’ and ‘dl-’ in the name improves the amount of information provided by the name and reduces ambiguity. The designators ‘R’, ‘RS’ and ‘S’ should not be used for chiral molecules, unless used in the reference or required to distinguish between different chiral molecules. 2.5.8 Metals For metals, the common name should be used; for example, ‘copper’ and ‘iron’, rather than ‘cuprous’ or ‘cupric’, and ‘ferrous’ or ‘ferric’. Common names are more readily understood by consumers. Where a single oxidation state occurs, that state should be included in the name (e.g. copper (I), copper (II), iron (II), iron (III)). Where mixed oxidation states occur, the names would merely be copper, iron, and so on (e.g. iron phosphate). 2.5.9 Colour names New names for ingredients used as colours should not include the Colour Index (CI) number. Separate names will be created for each colour and its lake (e.g. aluminium or calcium lake), as required (e.g. erythrosine and erythrosine aluminium lake).
consult-ihin-130515-atm.docx