Dimagnesium phosphate is a compound with formula MgHPO4. It is a magnesium acid salt of phosphoric acid. It is one of the compounds that have E number "E343". E numbers are number codes for food additives and are usually found on food labels throughout the European Union. The numbering scheme follows that of the International Numbering System (INS) as determined by the Codex Alimentarius committee . Only a subset of the INS additives are approved for use in the European Union, the 'E' prefix which stands for Europe. In casual language in the UK and Ireland, the term "E-number" is used as a pejorative term for artificial food additives, and products may promote themselves as "free of E-numbers" even though most of the (natural) ingredients contain components that also have an E-number (e.g. Vitamin C (E300) or lycopene (E160d), the colour in tomatoes). To have a diet without any components that also have an E-number is basically impossible. Free of E-numbers thus refers mainly to the use of additives, not to the absence of components with an E-number. E numbers are also encountered on food labelling in other jurisdictions, including the GCC, Australia, New Zealand and Israel. The "E" prefix is omitted in Australia and New Zealand. They are increasingly (though still rarely) found on North American packaging, especially in Canada.