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Commission Regulation (EU) No 231/2012Show full title
Commission Regulation (EU) No 231/2012 of 9 March 2012 laying down specifications for food additives listed in Annexes II and III to Regulation (EC) No 1333/2008 of the European Parliament and of the Council (Text with EEA relevance)
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- Regulations originating from the EU
- 2012 No. 231
- ANNEX
- E 290 CARBON DIOXIDE
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E 290 CARBON DIOXIDE
| Synonyms | Carbonic acid gas; Dry ice (solid form); Carbonic anhydride |
| Definition | |
|---|---|
| Einecs | 204-696-9 |
| Chemical name | Carbon dioxide |
| Chemical formula | CO2 |
| Molecular weight | 44,01 |
| Assay | Content not less than 99 % v/v on the gaseous basis |
| Description | A colourless gas under normal environmental conditions with a slight pungent odour. Commercial carbon dioxide is shipped and handled as a liquid in pressurised cylinders or bulk storage systems, or in compressed solid blocks of ‘dry ice’. Solid (dry ice) forms usually contain added substances, such as propylene glycol or mineral oil, as binders |
| Identification | |
| Precipitate formation | When a stream of the sample is passed through a solution of barium hydroxide, a white precipitate is produced which dissolves with effervescence in dilute acetic acid |
| Purity | |
| Acidity | 915 ml of gas bubbled through 50 ml of freshly boiled water must not render the latter more acid to methylorange than is 50 ml freshly boiled water to which has been added 1 ml of hydrochloric acid (0,01 N) |
| Reducing substances, hydrogen phosphide and sulphide | 915 ml of gas bubbled through 25 ml of ammoniacal silver nitrate reagent to which has been added 3 ml of ammonia must not cause clouding or blackening of this solution |
| Carbon monoxide | Not more than 10 μl/l |
| Oil content | Not more than 5 mg/kg |
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