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Phase Diagram of the Reciprocal System 2NH+4, Mg2+//SO2-4, 2NO-3–H2O
Fellner, P. and Khandl, V. Phase Diagram of the Reciprocal System 2NH+4, Mg2+//SO2-4, 2NO-3–H2O Chemical Papers, Vol.58, No. 4, 2004, 221-223
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n584a221.pdf
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584a221.pdf |
application/pdf |
103.72KB |
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| Author(s) |
Fellner, P.
Khandl, V.
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| Title |
Phase Diagram of the Reciprocal System 2NH+4, Mg2+//SO2-4, 2NO-3–H2O
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| Journal name |
Chemical Papers
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| Publication date |
2004
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| Year available |
2004
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| Volume number |
58
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| Issue number |
4
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| ISSN |
0366-6352
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| Start page |
221
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| End page |
223
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2004
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| Language |
english
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| Subject |
250000 Chemical Sciences
250200 Inorganic Chemistry
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| Abstract/Summary |
Phase equilibria in the reciprocal system 2NH+4 ,Mg2+//SO2−4 ,2NO−3 —H2O were investigated in the temperature range of 70°C—115°C. It was found out that two double salts can exist in this system, viz. (NH4)2Mg(SO4)2 · 6H2O (boussingaultite) and (NH4)2Mg2(SO4)3 (efremovite). Boussingaultite is stable up to (107 ± 3)°C while at higher temperatures efremovite crystallizes from aqueous solutions. Boussingaultite loses its hydrate water when heated to the temperatures higher than 110°C. However, its transformation to efremovite is very slow. Detailed phase diagram of the system 2NH+4 ,Mg2+//SO2−4 ,2NO−3 —H2O at the temperature of 90°C is presented.
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