Process for crystallization of anhydrous sodium carbonate

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Alkali metal

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423265, 423421, 23302T, 23300, C01D 700, C01D 740

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active

041839013

ABSTRACT:
Anhydrous sodium carbonate is crystallized from saturated aqueous sodium carbonate solutions at temperatures in the range of 104.degree. to below 109.degree. C. by adding to the solution very small proportions of additives which function to reduce the transition temperature of monohydrate to anhydrous sodium carbonate.

REFERENCES:
patent: 3103413 (1963-09-01), Blumenthal
patent: 3656892 (1972-04-01), Bourne et al.
patent: 3738938 (1973-06-01), Barrett
patent: 3796794 (1974-03-01), Ilardi
patent: 3836628 (1974-09-01), Ilardi et al.
patent: 3852427 (1974-12-01), Hoffman et al.
patent: 3855397 (1974-12-01), Hoffman et al.
patent: 3933977 (1976-01-01), Ilardi et al.
Sienko et al., Chemistry, 2nd Edition, McGraw Hill Book Co., N.Y., N.Y. 1961, pp. 196-199.

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