Talk:Calcium chloride

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Calcium chloride was one of the Natural sciences good articles, but it has been removed from the list. There are suggestions below for improving the article to meet the good article criteria. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake.

Article milestones
Date	Process	Result
November 22, 2005	Good article nominee	Listed
September 8, 2007	Good article reassessment	Kept
August 26, 2016	Good article reassessment	Delisted

Current status: Delisted good article

Removal of how-to section on aquaria

Today I removed a section from this article describing how to create a solution of calcium chloride for use in a marine aquarium and without any citations for same. While the information was interesting, such how-to instructions do not belong in a Wikipedia article (see WP:NOTHOWTO). They could certainly be re-written describing how other people use calcium chloride in marine aquaria, along with at least one citation for same, no? But the section as it stood was a how-to guide, and that's not the goal of the project. Also, uses in marine aquaria already are mentioned in the article several paragraphs earlier, so the section was redundant as well. KDS4444^Talk 16:51, 10 May 2013 (UTC)[reply]

Solubility data seems off

Here's what it says about soluability in water:

Anhydrous: MW=110.98
74.5 g/100 mL (20 °C)

Hexahydrate: MW=219.07
49.4 g/100 mL (−25 °C)
59.5 g/100 mL (0 °C)
65 g/100 mL (10 °C)
81.1 g/100 mL (25 °C)
102.2 g/100 mL (30.2 °C)

α-Tetrahydrate: MW=183.04
90.8 g/100 mL (20 °C)
114.4 g/100 mL (40 °C)

Dihydrate: MW=147.01
134.5 g/100 mL (60 °C)
152.4 g/100 mL (100 °C)

I added the molecular weights

90.8g of Dihydrate = 68.55 g CaCl2 + 22.25g H20

Seems very strange that less CaCl2 dissolves when we're actually adding more solvent contained in the dihydrate crystals.