Hidróxido de sodio: Diferenzas entre revisións

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Liña 152:
* [https://web.archive.org/web/20110722200125/http://ecb.jrc.it/ European Chemicals Bureau]
* [http://www.chlorineinstitute.org/ The Chlorine Institute, Inc. website]
* [https://web.archive.org/web/20060822050456/http://www.bayermaterialsciencenafta.com/businesses/ibc/index.html Sodium hydroxide products of Bayer MaterialScience in North America]
* [http://www2.iq.usp.br/docente/gutz/Curtipot_.html Titration of acids with sodium hydroxide – freeware for data analysis, simulation of curves and pH calculation]
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