Difference between revisions of "Sodium aluminosilicate"
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'''Sodium aluminosilicates''', sometimes called '''sodium silicoaluminates''' (especially in the United States), are a large class of compounds of general formula Na<sub>(2''x'')</sub>Al<sub>(2''y'')</sub>Si<sub>''z''</sub>O<sub>(''x''+3''y''+2''z'')</sub>·''m''H<sub>2</sub>O, also written as ''x''Na<sub>2</sub>O·''y''Al<sub>2</sub>O<sub>3</sub>·''z''SiO<sub>2</sub>·''m''H<sub>2</sub>O. They occur widely in nature as [[feldspar]]s and other [[aluminosilicate mineral]]s, and are also produced artificially on a large scale as [[zeolite]]s, especially for use in laundry powders.<ref>{{Greenwood&Earnshaw1st|pages=141–16}}.</ref> | '''Sodium aluminosilicates''', sometimes called '''sodium silicoaluminates''' (especially in the United States), are a large class of compounds of general formula Na<sub>(2''x'')</sub>Al<sub>(2''y'')</sub>Si<sub>''z''</sub>O<sub>(''x''+3''y''+2''z'')</sub>·''m''H<sub>2</sub>O, also written as ''x''Na<sub>2</sub>O·''y''Al<sub>2</sub>O<sub>3</sub>·''z''SiO<sub>2</sub>·''m''H<sub>2</sub>O. They occur widely in nature as [[feldspar]]s and other [[aluminosilicate mineral]]s, and are also produced artificially on a large scale as [[zeolite]]s, especially for use in laundry powders.<ref>{{Greenwood&Earnshaw1st|pages=141–16}}.</ref> | ||
| − | Amorphous sodium aluminosilicate is manufactured for use as an [[anticaking agent]] in food ([[International Numbering System for food additives|INS]] 554).<ref name="Codex">{{FoodAdd Codex list}}.</ref><ref>{{citation | title = Sodium aluminosilicate | url = http://www.fao.org/ag/agn/jecfa-additives/specs/monograph3/additive-391.pdf | publisher = FAO/WHO [[Joint Expert Committee on Food Additives]] (JECFA) | date = 2006}}.</ref> It is "[[generally recognized as safe]]" (GRAS) at levels of less than 2% in the United States,<ref>[[Code of Federal Regulations]], Title 21: Food and Drugs, [http://www.access.gpo.gov/nara/cfr/waisidx_09/21cfr182_09.html Part 182: Substances generally recognized as safe] (edition of April 1, 2009).</ref> and is also approved for use in Australia and New Zealand,<ref>[http://www.foodstandards.gov.au/foodstandards/foodstandardscode/standard131foodaddit4239.cfm Standard 1.3.1], [[Australia New Zealand Food Standards Code]].</ref> Canada<ref>Table X to Division B.16, [http://laws.justice.gc.ca/en/showtdm/cr/C.R.C.-c.870 Food and Drug Regulations] (C.R.C., c. 870).</ref> and (in a limited range of products) in the European Union.<ref>Art. 30, [http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2008:354:0016:01:EN:HTML Regulation (EC) No 1333/2008 of the European Parliament and of the Council of 16 December 2008 on food additives], ''OJEU'' L354, 31.12.2008, pp 16–33.</ref><ref>Annex IV, [http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31995L0002:EN:HTML European Parliament and Council Directive No 95/2/EC of 20 February 1995 on food additives other than colours and sweeteners], ''OJEU'' L61, 18.3.1995, pp 1–40.</ref><ref>Art. 1.6 and Annex, [http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31998L0072:EN:HTML Directive 98/72/EC of the European Parliament and of the Council of 15 October 1998 amending Directive 95/2/EC on food additives other than colours and sweeteners], ''OJEU'' L295, 4.11.1998, pp 18–30.</ref><ref>Art. 1.3 and Annex I, [http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2006:204:0010:01:EN:HTML Directive 2006/52/EC of the European Parliament and of the Council of 5 July 2006 amending Directive 95/2/EC on food additives other than colours and sweeteners and Directive 94/35/EC on sweeteners for use in foodstuffs], ''OJEU'', L204, 26.07.2006, pp 10–22.</ref> | + | Amorphous sodium aluminosilicate is manufactured for use as an [[anticaking agent]] in food ([[International Numbering System for food additives|INS]] 554).<ref name="Codex">{{FoodAdd Codex list}}.</ref><ref>{{citation | title = Sodium aluminosilicate | url = http://www.fao.org/ag/agn/jecfa-additives/specs/monograph3/additive-391.pdf | publisher = FAO/WHO [[Joint Expert Committee on Food Additives]] (JECFA) | date = 2006}}.</ref> It is "[[generally recognized as safe]]" (GRAS) at levels of less than 2% in the United States,<ref>[[Code of Federal Regulations]], Title 21: Food and Drugs, [http://www.access.gpo.gov/nara/cfr/waisidx_09/21cfr182_09.html Part 182: Substances generally recognized as safe] (edition of April 1, 2009).</ref> and is also approved for use in Australia and New Zealand,<ref>[http://www.foodstandards.gov.au/foodstandards/foodstandardscode/standard131foodaddit4239.cfm Standard 1.3.1], [[Australia New Zealand Food Standards Code]].</ref> Canada<ref>Table X to Division B.16, [http://laws.justice.gc.ca/en/showtdm/cr/C.R.C.-c.870 Food and Drug Regulations] (C.R.C., c. 870).</ref> and (in a limited range of products)<ref group="note" name="EU-anticake">Only dried powdered foodstuffs (including sugars), salt and salt substitutes, sliced or grated hard, semi-hard and processed cheese and cheese analogues (< 10 g/kg total anticaking agents); seasonings and tin-greasing products (< 30 g/kg total anticaking agents); chewing gum, rice, food supplements as defined in Directive 2002/46/EC, foodstuffs in tablet and coated tablet form (''quantum satis''); sausages and confectionery (excluding chocolate; suface treatment only, ''quantum satis''): Annex IV, Directive 95/2/EC, as modified by Art. 1.6 and Annex, Directive 98/72/EC and by Art. 1.3 and Annex I, Directive 2006/52/EC.</ref> in the European Union.<ref>Art. 30, [http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2008:354:0016:01:EN:HTML Regulation (EC) No 1333/2008 of the European Parliament and of the Council of 16 December 2008 on food additives], ''OJEU'' L354, 31.12.2008, pp 16–33.</ref><ref>Annex IV, [http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31995L0002:EN:HTML European Parliament and Council Directive No 95/2/EC of 20 February 1995 on food additives other than colours and sweeteners], ''OJEU'' L61, 18.3.1995, pp 1–40.</ref><ref>Art. 1.6 and Annex, [http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31998L0072:EN:HTML Directive 98/72/EC of the European Parliament and of the Council of 15 October 1998 amending Directive 95/2/EC on food additives other than colours and sweeteners], ''OJEU'' L295, 4.11.1998, pp 18–30.</ref><ref>Art. 1.3 and Annex I, [http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2006:204:0010:01:EN:HTML Directive 2006/52/EC of the European Parliament and of the Council of 5 July 2006 amending Directive 95/2/EC on food additives other than colours and sweeteners and Directive 94/35/EC on sweeteners for use in foodstuffs], ''OJEU'', L204, 26.07.2006, pp 10–22.</ref> |
| − | ==References== | + | ==See also== |
| + | *[[Nepheline]], NaAlSiO<sub>4</sub> | ||
| + | *[[Jadeite]], NaAlSi<sub>2</sub>O<sub>6</sub> | ||
| + | *[[Albite]], NaAlSi<sub>3</sub>O<sub>8</sub> | ||
| + | |||
| + | ==Notes and references== | ||
| + | ===Notes=== | ||
| + | {{reflist|group=note}} | ||
| + | |||
| + | ===References=== | ||
{{reflist|2}} | {{reflist|2}} | ||
Revision as of 04:48, 12 December 2009
| Sodium aluminosilicate (amorphous) | |
|---|---|
| Other names | E554 |
| Identifiers | |
| CAS number | [] |
| EC number | |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Sodium aluminosilicates, sometimes called sodium silicoaluminates (especially in the United States), are a large class of compounds of general formula Na(2x)Al(2y)SizO(x+3y+2z)·mH2O, also written as xNa2O·yAl2O3·zSiO2·mH2O. They occur widely in nature as feldspars and other aluminosilicate minerals, and are also produced artificially on a large scale as zeolites, especially for use in laundry powders.[1]
Amorphous sodium aluminosilicate is manufactured for use as an anticaking agent in food (INS 554).[2][3] It is "generally recognized as safe" (GRAS) at levels of less than 2% in the United States,[4] and is also approved for use in Australia and New Zealand,[5] Canada[6] and (in a limited range of products)[note 1] in the European Union.[7][8][9][10]
See also
Notes and references
Notes
- ↑ Only dried powdered foodstuffs (including sugars), salt and salt substitutes, sliced or grated hard, semi-hard and processed cheese and cheese analogues (< 10 g/kg total anticaking agents); seasonings and tin-greasing products (< 30 g/kg total anticaking agents); chewing gum, rice, food supplements as defined in Directive 2002/46/EC, foodstuffs in tablet and coated tablet form (quantum satis); sausages and confectionery (excluding chocolate; suface treatment only, quantum satis): Annex IV, Directive 95/2/EC, as modified by Art. 1.6 and Annex, Directive 98/72/EC and by Art. 1.3 and Annex I, Directive 2006/52/EC.
References
- ↑ Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; pp 141–16. ISBN 0-08-022057-6.
- ↑ Codex Class Names and the International Numbering System for Food Additives, 7th ed.; Codex Alimentarius Commission, Food and Agriculture Organization, 2009. CAC/GL 36-1989, <http://www.codexalimentarius.net/download/standards/7/CXG_036e.pdf>.
- ↑ Sodium aluminosilicate; FAO/WHO Joint Expert Committee on Food Additives (JECFA), 2006, <http://www.fao.org/ag/agn/jecfa-additives/specs/monograph3/additive-391.pdf>.
- ↑ Code of Federal Regulations, Title 21: Food and Drugs, Part 182: Substances generally recognized as safe (edition of April 1, 2009).
- ↑ Standard 1.3.1, Australia New Zealand Food Standards Code.
- ↑ Table X to Division B.16, Food and Drug Regulations (C.R.C., c. 870).
- ↑ Art. 30, Regulation (EC) No 1333/2008 of the European Parliament and of the Council of 16 December 2008 on food additives, OJEU L354, 31.12.2008, pp 16–33.
- ↑ Annex IV, European Parliament and Council Directive No 95/2/EC of 20 February 1995 on food additives other than colours and sweeteners, OJEU L61, 18.3.1995, pp 1–40.
- ↑ Art. 1.6 and Annex, Directive 98/72/EC of the European Parliament and of the Council of 15 October 1998 amending Directive 95/2/EC on food additives other than colours and sweeteners, OJEU L295, 4.11.1998, pp 18–30.
- ↑ Art. 1.3 and Annex I, Directive 2006/52/EC of the European Parliament and of the Council of 5 July 2006 amending Directive 95/2/EC on food additives other than colours and sweeteners and Directive 94/35/EC on sweeteners for use in foodstuffs, OJEU, L204, 26.07.2006, pp 10–22.
External links
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See also the corresponding article on Wikipedia. |
