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Citation: Li Jun, Yang Qin, Zhang Feng-Xing, Li Heng-Xin, Wang Zhen-Jun. Isothermal Solubility of Na₂B₄O₇-Na₂CO₃-NaHCO₃-NaBO₂-H₂O System at 25， 35 and 45 ℃[J]. Acta Physico-Chimica Sinica, ;2001, 17(11): 1045-1048. doi: 10.3866/PKU.WHXB20011117 shu

Isothermal Solubility of Na₂B₄O₇-Na₂CO₃-NaHCO₃-NaBO₂-H₂O System at 25， 35 and 45 ℃

1.
Department of Chemistry, Northwest University, Key Laboratory of Phosicoinorganic Chemistry of Shaanxi Province， Xi′an　710069

Received Date: 16 April 2001
Available Online: 15 November 2001

Solubilities and refractive indices of saturated solutions of the system Na2B4O7Na2CO3 NaHCO3NaBO2H2O have been investigated by isothermal method at 25, 35 and 45 ℃. The complex trona (Na2CO3•NaHCO3•2H2O) was found in the system, therefore,there are 5 monosaturated fields,7 disaturated lines and 3 invariant points ：E1t（Na2B4O7•10H2O＋NaBO2•4H2O＋Na2CO3•nH2O）， E2t（Na2B4O7•10H2O＋ Na2CO3•NaHCO3•2H2O＋Na2CO3•nH2O）， E3t（Na2B4O7•10H2O＋Na2CO3•NaHCO3•2H2O＋NaHCO3）， at 25 ℃， n=10； 35 ℃， n=7； 45 ℃， n=1.
- Solubility diagram;Phase equilibrium;Quaternary system;Trona;Borate;　Carbonate
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沈阳化工大学材料科学与工程学院沈阳 110142

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Isothermal Solubility of Na2B4O7-Na2CO3-NaHCO3-NaBO2-H2O System at 25， 35 and 45 ℃

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通讯作者: 陈斌, bchen63@163.com

Isothermal Solubility of Na₂B₄O₇-Na₂CO₃-NaHCO₃-NaBO₂-H₂O System at 25， 35 and 45 ℃