发明授权
- 专利标题: Process for crystallization of anhydrous sodium carbonate
- 专利标题(中): 无水碳酸钠结晶方法
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申请号: US927187申请日: 1978-07-24
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公开(公告)号: US4183901A公开(公告)日: 1980-01-15
- 发明人: Joseph M. Ilardi , Eric Rau
- 申请人: Joseph M. Ilardi , Eric Rau
- 申请人地址: PA Philadelphia
- 专利权人: FMC Corporation
- 当前专利权人: FMC Corporation
- 当前专利权人地址: PA Philadelphia
- 主分类号: C01D7/00
- IPC分类号: C01D7/00 ; C01D7/24 ; C01D7/40
摘要:
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.
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