Sigma-Aldrich 氯化钙，无水，自由流动，Redi-Dri™，≥97%

产品概述

氯化钙是一种白色结晶盐。无水形式具有吸湿性，潮解性，高度溶于水，并溶于一些极性有机溶剂，如乙酸，醇和吡啶，但不溶于液氨和DMSO。无水氯化钙在水中具有大的溶解焓，溶解时放出热量，无水氯化钙可以通过几种方法制备。一种方法是将石灰石（CaCO 3）用氯化钠或盐酸处理，然后用钡盐沉淀碳酸盐。另一种方法是纯化盐水。在这两种方法中，然后，湿的CaCl 2被化学纯化和干燥。2工业上，这通常在喷雾干燥塔或流化床干燥器中进行。

我们致力于为您带来更环保的替代产品，坚持四个类别之一的绿色替代产品。氯化钙是一种用于高温热能储存的三元盐的赋能产品，可实现高效的储热和释热。点击此处了解更多信息。

应用领域

Anhydrous calcium chloride is used in a multitude of applications. Scientists have found that molten CaCl₂ is an excellent flux material in molten-salt electrolysis of oxides, due to it high solubility of oxygen anions. Most notably, molten CaCl₂ is used in the electrochemical production of titanium from titanium dioxide[PMID 11014188] in the FFC Cambridge process. Similarly, it has been used to produce pure silicon, uranium, vanadium and a host of metals.


CaCl₂ is also used as the calcium source in the synthesis of hydroxyapatites PMID 12221709 (calcium phosphates), which are found naturally in tooth enamel, and are of interest in chemistry, biology, medicine, and geology.


CaCl₂ is commonly used in the preparation of calcium alginate gel beads, PMID 19957940 which can serve as a substrate for nanoparticle synthesis.

CaCl₂ has been found to act as a Lewis base catalyst in organic solvents or aqueous conditions:


-Activating DMS enolates PMID 11804481


-In chiral oxazoline-metal complexes for stereoselective syntheses PMID 34019404


Anhydrous calcium chloride is also used as a drying agent in labs and shipping containers.


Anhydrous calcium chloride is sometimes added to concrete mixes because the heat given off by the dissolution of CaCl₂ accelerates the setting of the concrete.

产品特点

Redi-Dri™中的氯化钙提供了几个好处-作为自由流动的粉末，不添加防结块剂，保质期更长-由于珠状形式和Redi-Dri包装，对环境水分的吸收更慢-与安瓿相比，可方便地重新密封储存容器-与结块材料相比，溶解更快-无需切片，凿，或研磨成块的盐-与粉末相比，由于珠粒的表面积与体积比较低，减少了静电积聚-与粉末相比，增加了坩埚填充密度-与粉末相比，在高温固态工艺中的挥发性较低-通过气动加载将微珠方便地输送到样品室，这防止了通常与粉末对应物相关的沉降和堵塞问题-虽然Redi-Dri ™包装系统确实提供干燥性能，开幕式和闭幕式的Redi-Dri ™瓶仍预期在受控气氛下进行，以保持您的MilliporeSigma产品的最高质量。

包装信息

Redi Dri™ 是一种创新的包装系统，可在运输和化学品储存过程中防止无水盐和吸湿盐吸收环境湿气，无需添加防结块剂，从而保持化合物的质量保证和良好的流动性。Redi-Dri™ 还提供了一个方便重新封口的储存容器，是一次性使用包装（如安瓿）的更简单、更安全的替代方案。虽然 Redi-Dri™ 包装系统确实具有干燥功能，但 Redi-Dri™ 瓶的开关仍应在受控环境下进行，以保持 MilliporeSigma 产品的最高质量。

技术规格