#hygroscopic

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Efflorescent, deliquescent and hygroscopic compounds are terminologies used in chemistry to describe the chemical changes that occur in a compound during a chemical reaction. These changes are reflective of the kind of bonding present in the reacting elements, their oxidation numbers, their affinity for electrons and their ability to displace other elements. Efflorescent, deliquescent and hygroscopic compounds is also indicative of the ability of the compounds to absorb of crystallization. When pellets of sodium hydroxide, washing soda crystals that is gotten from an airtight container, concentrated tetraoxosulphate(VI) acid and quicklime are each placed on a watch glass after noting their appearances carefully. When you leave each of these substances in the open for a while, you would notice some visible differences in their appearance which is an indication of their ability to either lose or gain moisture from the atmosphere.   Efflorescence: A number of crystalline salts will lose all or part of their water of crystallization when they are exposed to the atmosphere to form a lower hydrate or the anhydrous salt. This phenomenon is referred to as efflorescence while the salt is said to be efflorescent. A perfect example of a compound that undergoes efflorescence is washing soda where its molecules lose nine out of its ten molecules of water of crystallization when it is exposed to the open air.           Na2CO3.10H2O(s) → Na2CO3.H2O(s) Read the full article

Having the property of absorbing moisture from the atmosphere, as hygroscopic tissue, or of becoming coated with a film of moisture.

So when I visited the Dead Sea, I brought home some of the salt rocks. And then the funny chemical hygroscopic behaviours show up. I’ve got my own humidity sensor at home. When the humidity goes too high, the capacity for the salt rock to retain moisture is exceeded and then the water comes out. And then the reverse. Fascinating #deadsea #hygroscopic #salt (at Abu Dhabi, United Arab Emirates) https://www.instagram.com/p/B_WR_vPJwn9/?igshid=dfu2i9y5xhzi

Caustic Soda prills are solid small fused white pearls, color- and odorless and very hygroscopic. It is very soluble in water and dissolves very rapidly to caustic soda solution liberating a lot of heat; in methanol and ethanol it is well soluble. Caustic Soda prills and caustic soda solutions thereof are very corrosive to many materials and have to be handled with great care. The Asia-Pacific Caustic Soda Prills 99% market will reach xxx Million USD in 2018 and CAGR xx% 2018-2023. The report begins from overview of Industry Chain structure, and describes industry environment, then analyses market size and forecast of Caustic Soda Prills 99% by product, region and application, in addition, this report introduces market competition situation among the vendors and company profile, besides, market price analysis and value chain features are covered in this report.