信息检索与阅读第一课：Patentspecification

1、PATENT SPECIFICATION专利说明书专利说明书第三、四讲第三、四讲要要 求求掌握：化学化工中常用的词汇及科技英语的掌握：化学化工中常用的词汇及科技英语的 翻译基本原则翻译基本原则熟悉：专利中所描述的两种脱水的方法熟悉：专利中所描述的两种脱水的方法了解：专利说明的基本形式了解：专利说明的基本形式 dehydratebarium hydroxide hydrate octahydratemonohydrate anhydrouswater of crystallisationreduced pressure(使使)脱水脱水氢氧化钡水合物氢氧化钡水合物(水合氢氧化钡水合氢氧化钡)八水合

2、物八水合物一水合物一水合物无水的无水的结晶水结晶水减压减压patent specification专利说明书专利说明书New words and expressionscongruent melting pointdigestionelevated temperatureazeotropic distillation overflowreceiverchemically inertmiscibleimmiscibleazeotropic boiling point同成分熔点（共熔点）同成分熔点（共熔点）浸提浸提升温升温共沸蒸馏共沸蒸馏溢流口溢流口接受器接受器化学惰性的化学惰性的互溶的，易混合的

3、互溶的，易混合的共沸点共沸点不能互溶的不能互溶的hydrophobicadhesive affinitytoluenechloro-hydrocarbon flowabilitywetting strengthcovalent bondrefluxevacuation疏水的，憎水的疏水的，憎水的胶粘亲和力胶粘亲和力甲苯甲苯氯代烃氯代烃流动性流动性润湿能力润湿能力共价键共价键回流回流抽真空抽真空同系物同系物filtrationfiltratehomologuebenzenepastesludgeaqueousdistillatedioxane苯苯糊状物糊状物淤泥淤泥水的，含水的水的，含水的蒸馏物

4、，馏分蒸馏物，馏分二恶烷二恶烷过滤过滤 n.滤液滤液碳链词根碳链词根C1- meth-C2- eth-C3- prop-C4- but(a)-C5- pent(a)-C6- hex(a)-C7- hept(a)-C8- oct(a)-C9- mon(a)-C10- dec(a)-数字前缀数字前缀mono-di-tri-tetra-penta- hexa- hepta- octa- mona-, enne-1deca- 知识补充知识补充第一讲第一讲 PATENT SPECIFICATION GB851,690NO DRAWINGSDate of Application and filing Co

5、mplete Specification:June 26, 1959 No. 22094/59.Application made in Germany on Aug. 21, 1958.Complete Specification Published: Oct. 19, 1960. Index at Acceptance: -Class 1(3), Ain46A.International Classification: -C01f. 专利说明书专利说明书国际（专利）分类号国际（专利）分类号COMPLETE SPECIFICATIONMethod of Dehydrating Barium H

6、ydroxide Hydrate脱水脱水钡钡氢氧化物氢氧化物水合物水合物氢氧化钡水合物的脱水方法氢氧化钡水合物的脱水方法We, Kali-CHEMIE AKTIENGESELLSCHAFT, of Hans 苛性钾苛性钾 化学化学 股份公司股份公司（德语）（德语） Bckler Allee 20, Hannover, Germany, a body corporate organized under the laws of 法人团体法人团体Germany, do hereby declare the invention, for 特此特此which we pray that a patent

7、may be granted to us, 请求请求 授予，准予授予，准予and the method by which it is to be performed, to be particularly described in and by the following 详细地详细地 statement: 我们，我们，德国法律下组织的一个法人团体，特此，德国法律下组织的一个法人团体，特此宣布一项我们申请并希望授予专利的发明以及在下列宣布一项我们申请并希望授予专利的发明以及在下列的陈述中将被详细描述的该发明的实施方法。的陈述中将被详细描述的该发明的实施方法。我们，我们，德国法律下组织的一个法人

8、团体，特此宣布一项发明以及本发明，德国法律下组织的一个法人团体，特此宣布一项发明以及本发明的实施方法，希望能授予我们专利。相关的详细描述的声明如下：的实施方法，希望能授予我们专利。相关的详细描述的声明如下：This invention relates to a method of dehydrating barium hydroxide hydrates. 涉及，与涉及，与有关有关 本发明是有关氢氧化钡本发明是有关氢氧化钡水合物水合物脱水的方法。脱水的方法。Barium hydroxide octahydrate, monohydrate, and octa-：八：八 mono- ：一：一an

9、hydrous barium hydroxide are known as well 无水无水defined compounds. Products having varying contents of water of crystallization between the 结晶水结晶水mono- and the octahydrate are also industrially used. 八水合、一水合八水合、一水合氢氧化钡氢氧化钡和无水氢氧化钡都是明确界定的化合物。和无水氢氧化钡都是明确界定的化合物。 结晶水含量在一到八之间的产物（氢氧化钡）也是工业上常用的。结晶水含量在一到八之间的产

10、物（氢氧化钡）也是工业上常用的。Barium hydroxide octahydrate congruently melts in 共熔融共熔融its own water of crystallization. The water cannot be removed from this solution otherwise than by 除了除了之外之外prolonged heating at temperatures up to 300. The延长的延长的process is accompanied by troublesome spattering and incrustation p

11、henomena. 飞溅飞溅结壳，积垢结壳，积垢八水合氢氧化钡共熔融于其结晶水中。（八水合氢氧化钡与其结晶八水合氢氧化钡共熔融于其结晶水中。（八水合氢氧化钡与其结晶水共熔融。）水共熔融。）除非在除非在 300以上的温度下长时间的加热，否则这些水无法从溶液中除去。以上的温度下长时间的加热，否则这些水无法从溶液中除去。（这些水只有通过（这些水只有通过在在300以上的温度下以上的温度下长时间地加热才能从溶液中除去。）长时间地加热才能从溶液中除去。） 这个过程伴随着令人讨厌的飞溅和结壳现象。这个过程伴随着令人讨厌的飞溅和结壳现象。An improvement can be achieved by de

12、hydrating under reduced pressure at a temperature of about 130 . 减压减压The barium hydroxide octahydrate will then, when slowly heated, lose part of its water of crystallization at temperature below its congruent melting point of 78, 共熔点，同成分熔点共熔点，同成分熔点so that the solid state is preserved throughout the

13、 dehydrating process. 在大约在大约130的温度和减压条件下脱水能实现对该方法的改进的温度和减压条件下脱水能实现对该方法的改进 。（对该方法的改进措施是（对该方法的改进措施是在大约在大约130的温度和减压条件下脱水。的温度和减压条件下脱水。）当缓慢加热时，八水合氢氧化钡将在低于其共熔点即当缓慢加热时，八水合氢氧化钡将在低于其共熔点即78的温度的温度下失去部下失去部分结晶水，从而使得整个脱水过程保持在固态中进行。分结晶水，从而使得整个脱水过程保持在固态中进行。A drawback of this method is the long time the process 缺点，弊

14、端缺点，弊端of dehydration takes to perform, the water of crystallization being released extremely slowly. In both cases it is impossible quantitatively to control the degree of dehydration attained in the course of the process. 脱水脱水 n. 过程，进程过程，进程 quantitatively 定量地；定量地； qualitatively 定性地定性地这种方法的缺点是所进行的脱水

15、过程时间长，结晶水释放非常缓慢。这种方法的缺点是所进行的脱水过程时间长，结晶水释放非常缓慢。 两种情况下都不可能在工艺两种情况下都不可能在工艺过程过程中定量地控制脱水的程度。中定量地控制脱水的程度。It has now been found that the water of crystallization can be withdrawn from the barium hydroxide hydrate 提取，抽出提取，抽出either by heating the same in an organic solvent, the water being azeotropically dis

16、tilled off with the solvent, 共沸蒸馏共沸蒸馏or by removing it from the barium hydroxide hydrate merely by digestion in a suitable solvent at elevated 浸提浸提 升温升温temperature. 现在发现可以通过两种方法把氢氧化钡水合物中的结晶水除去：将其在某现在发现可以通过两种方法把氢氧化钡水合物中的结晶水除去：将其在某一有机溶剂中加热，一有机溶剂中加热，水可以水可以通过通过与溶剂一起与溶剂一起共沸蒸馏而除去；或在升温条共沸蒸馏而除去；或在升温条件下用合适的溶

17、剂将水从氢氧化钡件下用合适的溶剂将水从氢氧化钡水合物水合物中浸提出去。中浸提出去。It is, however, necessary to select a solvent which is chemically inert to barium hydroxide, 化学惰性的化学惰性的but the selected solvent may be a solvent mixture. 然而，所选择的溶剂必须对氢氧化钡是化学惰性的，且可能是一种混合溶然而，所选择的溶剂必须对氢氧化钡是化学惰性的，且可能是一种混合溶剂。剂。Organic solvents which, in the liquid

18、 phase, are not miscible with water in any proportion have been 易混合的，互溶的易混合的，互溶的 比例比例found to be especially useful for performing the azeotropic distillation, so that the continuous and 共沸蒸馏共沸蒸馏complete separation of the water can be effected in a receiver fitted with an overflow. 接受器接受器 溢流口溢流口 液相时以

19、任意比例都不能和水互溶的有机溶剂在进行共沸蒸馏时是特别液相时以任意比例都不能和水互溶的有机溶剂在进行共沸蒸馏时是特别有用的，因此使用装有溢流口的接收器可以连续并完全地将水分离出去。有用的，因此使用装有溢流口的接收器可以连续并完全地将水分离出去。It is then possible to dehydrate relatively large quantities of barium hydroxide hydrate with the aid of a constant quantity of solvent. 因而使用因而使用一定量的一定量的溶剂就可能使相当溶剂就可能使相当大量的大量的氢氧化

20、钡氢氧化钡水合物水合物脱水。脱水。In the case of barium hydroxide octahydrate a solvent must be selected which has a boiling point 沸点沸点near the congruent melting point of 78，and an 共熔点，同成分熔点共熔点，同成分熔点azeotropic boiling point which below this melting point. 共沸点共沸点 熔点熔点 对于八水合氢氧化钡而言，所选择的溶剂必须具有与同成分熔点即对于八水合氢氧化钡而言，所选择的溶剂必须

21、具有与同成分熔点即78相近相近的沸点和的沸点和低于此熔点的低于此熔点的共沸点共沸点。The process of dehydration can be discontinued when a desired quantity of water has been removed so that barium hydroxides in any desired stage of hydration can thus be obtained. 当一定量的水被除去时，脱水过程可以随时中止，因此可以获得所当一定量的水被除去时，脱水过程可以随时中止，因此可以获得所希望的结晶水数目的氢氧化钡。希望的结晶水数

22、目的氢氧化钡。停止停止For lower hydrates of barium hydroxide the selection of a suitable solvent is not determined in the above manner, and the boiling point of pure solvent and of the azeotropic mixture should be above and as close as possible respectively to the boiling point of water. 分别地分别地 对于结晶水数目较少的氢氧化钡，

23、合适溶剂的选择与上述方式不同：纯对于结晶水数目较少的氢氧化钡，合适溶剂的选择与上述方式不同：纯溶剂和共沸混合物的沸点应分别高于和尽可能接近水的沸点。溶剂和共沸混合物的沸点应分别高于和尽可能接近水的沸点。 In an alternative procedure of heating the barium hydroxide hydrates with an organic solvent, the water of crystallization is removed by digestion in an anhydrous organic solvent or solvent mixture

24、which is chemically inert with respect to barium hydroxide but miscible in the liquid phase with water in any proportion, the process being performed at a temperature above the congruent melting point of the barium hydroxide octahydrate and below the boiling point of the solvent or solvent mixture.

25、在另一个把氢氧化钡在另一个把氢氧化钡水合物水合物与有机溶剂一起加热的方法中，结晶水是通过与有机溶剂一起加热的方法中，结晶水是通过在一种无水的有机溶剂或溶剂混合物中浸提而除去的，这种溶剂对于氢氧在一种无水的有机溶剂或溶剂混合物中浸提而除去的，这种溶剂对于氢氧化钡是化学惰性的，且在液相可以与水以任意比例互溶，化钡是化学惰性的，且在液相可以与水以任意比例互溶，脱水过程的温度脱水过程的温度高于八水合氢氧化钡的共熔点而低于溶剂或溶剂混合物的沸点。高于八水合氢氧化钡的共熔点而低于溶剂或溶剂混合物的沸点。PATENT SPECIFICATION （II）第二讲第二讲It has been proposed

26、to dry aqueous pastes or sludges consisting of fine particles of hydrophobic solids, by a method which consists in mixing the pastes with a second liquid which is substantially immiscible with water and which has a greater adhesive affinity with solid than water, and then separating the solid from i

27、ts water by the displacement of the water, the second liquid being then removed by evaporation until the paste is dry. （人们）提议，人们提出了。（人们）提议，人们提出了。含水的糊状物含水的糊状物淤泥状淤泥状物物细颗粒细颗粒疏水的疏水的不能混溶的不能混溶的胶粘亲和力胶粘亲和力蒸发蒸发 n.evaporate v. 在于在于 +名词或动名词名词或动名词It has been proposed to dry aqueous pastes or sludges consisting

28、of fine particles of hydrophobic solids, by a method which consists in mixing the pastes with a second liquid which is substantially immiscible with water and which has a greater adhesive affinity with solid than water, and then separating the solid from its water by the displacement of the water, t

29、he second liquid being then removed by evaporation until the paste is dry. 人们提出人们提出了一种方法来干燥由了一种方法来干燥由疏水的疏水的细颗粒细颗粒组成的组成的含水的糊状物含水的糊状物或或淤泥状物淤泥状物。这种方法是指将这些糊状物与第二种液体混合，所选的。这种方法是指将这些糊状物与第二种液体混合，所选的液体与水完全液体与水完全不能混溶不能混溶，而且它与固体之间的，而且它与固体之间的胶粘亲和力胶粘亲和力大于水；大于水；然后然后通过置换水的方法把固体从水里分离出来；再通过通过置换水的方法把固体从水里分离出来；再通过蒸发蒸

30、发作用除作用除去第二去第二种液体，直至糊状物干燥。种液体，直至糊状物干燥。合适的置换液体合适的置换液体如如甲苯甲苯或其它或其它苯苯的的同系物同系物，以及以及各种各种氯代烃氯代烃。Suitable displacing liquid are for instance toluene or other benzene homologues, as well as various chloro-hydrocarbons. homo- 同；同； hetero- 异异 The major proportion of the adhesively bound water is removed from t

31、he aqueous pastes after their flowability has possibly first been improved by the addition of further water, the water being displaced by the second liquid and separated without the application of heat, for instance by filtration. 当含水糊状物的当含水糊状物的流动性流动性通过通过进一步加入水的方法可能得到改进一步加入水的方法可能得到改进后，大部分粘附的水可以从中除去。

32、水被第二种液体取代进后，大部分粘附的水可以从中除去。水被第二种液体取代后无需通过加热，可用如后无需通过加热，可用如过滤过滤的方法分离出去。的方法分离出去。filtration 过滤过滤 n. filtrate 滤液滤液 n. filter 过滤过滤 v. 过滤器过滤器 n. 少量残留的仍然粘附在疏水固体上的水可以通过与第少量残留的仍然粘附在疏水固体上的水可以通过与第二种液体二种液体共沸蒸馏共沸蒸馏一起除去。一起除去。Small residues of water still attached by the hydrophobic solid are azeotropically distill

33、ed off together with the second liquid. 这种方法的目的是通过这种方法的目的是通过利用利用第二种液体具有第二种液体具有比比水更强的水更强的润湿润湿能力能力，来干燥其他方式难以干燥的、由疏水的细颗粒组成的，来干燥其他方式难以干燥的、由疏水的细颗粒组成的含水糊状物，含水糊状物，同时同时该方法从该方法从热能热能消耗角度来说是比较经济消耗角度来说是比较经济的。的。The object of the method is to dry otherwise difficultly drying aqueous pastes consisting of fine part

34、icles of hydrophobic solids by utilising the higher wetting strength of the second liquid in relation to water, the method at the same time affording economies in the consumption of thermal energy. It has been proposed to dry pastes or sludges consisting of fine particles of hydrophobic solids, by a

35、 method which consists in mixing the pastes with a second liquid which is substantially immiscible with water and which has a greater adhesive affinity with solid than water, and then separating the solid from its water by the displacement of the water, the second liquid being then removed by evapor

36、ation until the paste is dry. Suitable displacing liquid are for instance toluene or other benzene homologues, as well as various chloro-hydrocarbons. The major proportion of the adhesively bound water is removed from the aqueous pastes after their flowability has possibly first been improved by the

37、 addition of further water, the water being displaced by the second liquid and separated without the application of heat, for instance by filtration. Small residues of water still attached by the hydrophobic solid are azeotropically distilled off together with the second liquid. The object of the me

38、thod is to dry otherwise difficultly drying aqueous pastes consisting of fine particles of hydrophobic solids by utilising the higher wetting strength of the second liquid in relation to water, the method at the same time affording economies in the consumption of thermal energy. 人们提出人们提出了一种方法来干燥由了一种

39、方法来干燥由疏水的疏水的细颗粒细颗粒组成的组成的含水的糊状物含水的糊状物或或淤泥状物淤泥状物。这种方法是指将这些糊状物与第二种液体混合，所选的。这种方法是指将这些糊状物与第二种液体混合，所选的液体与水完全液体与水完全不能混溶不能混溶，而且它与固体之间的，而且它与固体之间的胶粘亲和力胶粘亲和力大于水；大于水；然后通过置换水的方法把固体从水里分离出来；再通过然后通过置换水的方法把固体从水里分离出来；再通过蒸发蒸发作用除作用除去第二种液体，直至糊状物干燥。合适的置换液体去第二种液体，直至糊状物干燥。合适的置换液体如如甲苯甲苯或其它或其它苯苯的的同系物同系物，以及以及各种各种氯代烃氯代烃。当含水糊状物

40、的。当含水糊状物的流动性流动性通过进一步加通过进一步加入水的方法可能得到改进后，大部分粘附的水可以从中除去。这些入水的方法可能得到改进后，大部分粘附的水可以从中除去。这些水被第二种液体取代后无需通过加热，可用如水被第二种液体取代后无需通过加热，可用如过滤过滤的方法分离出去。的方法分离出去。少量残留的仍然粘附在疏水固体上的水可以通过与第二种液体少量残留的仍然粘附在疏水固体上的水可以通过与第二种液体共沸共沸蒸馏蒸馏一起除去。这种方法的目的是通过一起除去。这种方法的目的是通过利用利用第二种液体具有第二种液体具有比比水更水更强的强的润湿能力润湿能力，来干燥其他方式难以干燥的、由疏水的细颗粒组成，来干燥

41、其他方式难以干燥的、由疏水的细颗粒组成的含水糊状物，的含水糊状物，同时同时该方法从该方法从热能热能消耗角度来说是比较经济的。消耗角度来说是比较经济的。In contradistinction thereto, the present method relates to dehydration, that is to say to the removal of water of crystallisation from barium hydroxide hydrates, which is bound by covalent bonds and in practice produces comp

42、ounds of distinctive properties. thereto 一般指上文或此外；一般指上文或此外； hereto 于此，关于这个于此，关于这个与与上述方法上述方法不同的是，本方法和不同的是，本方法和脱水脱水有关，有关，也就是也就是从从氢氧化氢氧化钡水合物钡水合物除去除去结晶水结晶水，脱水行为受，脱水行为受共价键共价键所限制，并且在所限制，并且在实实践中践中可以制备具有不同性质的化合物。可以制备具有不同性质的化合物。Dehydration is performed whilst heating the dry hydrated initial substance, eithe

43、r by azeotropic distillation of the water of crystallisation with a solvent known to be suitable for such a purpose, or by digestion at a given temperature in an anhydrous organic solvent which is miscible with water in any proportions, and then filtering. The object as well as the manner of perform

44、ing the two methods are therefore different. 脱水脱水与加热干燥的水合起始物质与加热干燥的水合起始物质同时同时进行，并通过两种方式进行，并通过两种方式实现：即通过实现：即通过结晶水结晶水与一种满足此目的的溶剂共沸蒸馏的方与一种满足此目的的溶剂共沸蒸馏的方法；或者通过在一定温度下用一种与水以任意比例互溶的无法；或者通过在一定温度下用一种与水以任意比例互溶的无水有机溶剂浸提，然后过滤的方法。水有机溶剂浸提，然后过滤的方法。因此，这两种方法的实施对象和操作方式是不同的。因此，这两种方法的实施对象和操作方式是不同的。In contradistinction

45、thereto, the present method relates to dehydration, that is to say to the removal of water of crystallisation from barium hydroxide hydrates, which is bound by covalent bonds and in practice produces compounds of distinctive properties. Dehydration is performed whilst heating the dry hydrated initia

46、l substance, either by azeotropic distillation of water of crystallisation with a solvent known to be suitable for such a purpose, or by digestion at a given temperature in an anhydrous organic solvent which is miscible with water in any proportions, and then filtering. The object as well as the man

47、ner of performing the two methods are therefore different. 与与上述方法上述方法不同的是，本方法和不同的是，本方法和脱水脱水有关，有关，也就是也就是从从氢氢氧化钡水合物氧化钡水合物除去除去结晶水结晶水，脱水行为受，脱水行为受共价键共价键所限制，所限制，并且在实践中可以制备具有不同性质的化合物。并且在实践中可以制备具有不同性质的化合物。脱水脱水与与加热干燥的水合起始物质加热干燥的水合起始物质同时同时进行，并通过两种方式实进行，并通过两种方式实现：即通过结晶水与一种满足此目的的溶剂共沸蒸馏的现：即通过结晶水与一种满足此目的的溶剂共沸蒸馏的方

48、法；或者通过在一定温度下用一种与水以任意比例互方法；或者通过在一定温度下用一种与水以任意比例互溶的无水有机溶剂浸提然后过滤的方法。因此，这两种溶的无水有机溶剂浸提然后过滤的方法。因此，这两种方法的实施对象和操作方式是不同的。方法的实施对象和操作方式是不同的。 本发明现将通过以下例子加以本发明现将通过以下例子加以阐明阐明： The present invention will now be illustrated by the following examples:-EXAMPLE 1. 150g Ba(OH)28H2O were slowly heated, whilst being stir

49、red, with 500 cc. benzene under reflux with a receiver fitted with an overflow.例例1：在不停地搅拌下，：在不停地搅拌下，150g八水氢氧化钡和八水氢氧化钡和500mL苯苯在在带有一配有溢流口的接受器的装置里带有一配有溢流口的接受器的装置里一起缓慢加热一起缓慢加热回流回流。g：gramme/gram 克克cc. - cubic centimeter - cm3 (mL)在苯和水混合物的共沸温度在苯和水混合物的共沸温度即即69.3时，第一个时，第一个蒸馏蒸馏物（馏分）物（馏分）出现。出现。At the boiling

50、temperature viz. 69.3 of the azeotropic mixture of benzene and water, the first distillate appeared. distillate 馏分馏分 n.； distill 蒸馏蒸馏 v.； distillation 蒸馏蒸馏 n. At the end of 90 minutes a quantity of water representing 7 molecules of water of crystallisation had collected in the receiver. In the cours

51、e of further heating the temperature rose to 80.2. 90分钟后接收器中收集到相当于分钟后接收器中收集到相当于7分子结晶水量的水。分子结晶水量的水。 在继续加热的过程中温度升高到在继续加热的过程中温度升高到80.2。Not until fresh Ba(OH)28H2O had been added did the temperature drop and the process of dehydration continue.直到直到加入新的八水合氢氧化钡，使得温度下降，并且脱水过加入新的八水合氢氧化钡，使得温度下降，并且脱水过程继续进行。程继

52、续进行。最后取出所形成的一水合氢氧化钡的苯最后取出所形成的一水合氢氧化钡的苯悬浮液悬浮液并并过滤过滤，粘附，粘附的苯通过简单的的苯通过简单的抽真空抽真空方法从底物中除去。方法从底物中除去。Finally the benzene suspension of the barium hydroxide which had been dehydrated to the monohydrate was drained and filtered, adhering benzene being removed from the substance by brief evacuation. The benze

53、ne filtrate was immediately re-used for further dehydration. （过滤得到的）苯（过滤得到的）苯滤液滤液 马上重新用于进一步的脱水。马上重新用于进一步的脱水。EXAMPLE 2. 100 g. of barium hydroxide monohydrate obtained in accordance with Example 1 was treated with 300 cc. of toluene in the same manner as that described above. Dehydration could now be

54、 continued to completion and the anhydrous barium hydroxide obtained. The boiling temperature of the azeotropic toluene and water mixture was 84.1 . 例例2：依照依照例例1（方法）得到的（方法）得到的100g一水合氢氧化钡按上一水合氢氧化钡按上述方式用述方式用300 mL甲苯处理。甲苯处理。 甲苯和水混合物的共沸温度是甲苯和水混合物的共沸温度是84.1。 脱水过程进行完全，获得无水氢氧化钡。脱水过程进行完全，获得无水氢氧化钡。EXAMPLE 3.50 g. Ba(OH)2.8H2O were digested in 1000 cc. of anhydrous dioxane at 80 , the mixture being v