Talk:Calcium chloride

message: Anybody knows the colour of calcium chloride when damp?
Piss  —Preceding unsigned comment added by Khurs (talk • contribs) 11:29, 9 April 2008 (UTC)
replies: text: When totally pure it should be colourless, but the technical grade product (used as a drying agent) often has a yellowish or brownish tinge to it when it gets damp.
Walkerma 17:47, 12 Mar 2005 (UTC)
thread_title:  Colour 

message: "It is used in concrete mixes to help speed up the initial setting and to strengthen the concrete.". Adding calcium chloride to the concrete mix will make (in about a 10-year timeframe) the rebar rust, and make way for "concreterot" (dutch: "nl:betonrot"). Rust has 6 times the volume of iron; this process will eventually crack the surface off the concrete, laying bare the rebar, further weakening the structure. Therefore, the use of calcium chloride in concrete mixes is banned in the Netherlands (at least, might be in all of Europe).
Might be worth a note. 83.160.162.119 01:20, 5 January 2006 (UTC)
replies: text: Yes, chloride ion does corrode steel so this makes sense.  I don't know about a ban, but I have added a warning and an external link to a recent academic report on this.  If you find out "concrete" information about a ban please post this.  Thanks for pointing it out. Walkerma 03:55, 5 January 2006 (UTC)
replies: text: OK, I added a link to this article which describes both the use as an accelerant and the corrosion problem, with citations.  I hope this meets your needs.  I also found a recent academic paper on effects of CaCl2 on Portland cement, but I only added that into the concrete article, it seemed to fit better there. Walkerma 18:38, 16 January 2007 (UTC)
thread_title: Use in concrete mixes

message: What is ONE fact about calcium carbonate NOT in the article???!!! doing report and jotted down all notes i could but need 1 more!!!!!!!!!!
:This is calcium chloride, not calcium carbonate. Argyriou (talk) 03:13, 6 November 2006 (UTC)
thread_title:  HELP 

message: So I got a can of sliced carrots at Whole Foods, and the ingredients listed are carrots, water, salt, and calcium chloride.
I was curious as to the calcium chloride and looked it up on wikipedia.
It says calcium chloride is used as a salt substitute in some foods because while it tastes very salty, it does not up the sodium content of the food.
It also says it helps to keep canned foods firm (because it's so good at absorbing water, I assume).
It's also used in two other food products.
But then it says:
"Calcium chloride is an irritant; wear gloves and goggles to protect hands and eyes; avoid inhalation.
Although calcium chloride is relatively safe to handle, care should be taken that it is not ingested. Calcium chloride reacts exothermically with water and can burn the mouth and esophagus."
?!
Should I be alarmed that I just ate a can of sliced carrots that had calcium chloride as an ingredient? Should I be alarmed that Whole Foods is selling it? If it's as dangerous as the wiki page says, why is it being put into food?
Just curious... 
(sorry, my laptop doesn't have tildes) Sofia Soledad
:In small quantities, absolutely yes. Because it contains calcium rather than sodium, you can sometimes found it sold in supermarkets as a salt substitute and that's probably why it was in your carrots. In large quantities, of course, any salt is poisonous if only because it screws up your electrolyte balance.
:Atlant 14:00, 31 January 2007 (UTC)
thread_title:  Is calcium chloride edible or not? 

message: Is calcium chloride ionic or covalent/molecular? —The preceding unsigned comment was added by Difficult (talk • contribs) 23:26, 10 February 2007 (UTC)
thread_title:  Ionic? 

message: Re-reviewing this article almost two years after it's[sic] original nomination to see if it still meets the GA criteria. Article hasn't changed too much in that time, although more details have been added. The article continues to meet the GA criteria, although there are some minor issues that should be fixed.
First, it looks like most of the information in the article is being 'cited' by the two listings under 'general references', and not directly with inline citations. While this is still acceptable, the use of inline citations is preferred, and the article should be converted. See WP:CITE.
Second, I removed the mention of the approximate 1990 price of $182/ton from the article. It had no source, and a 1990 price is not particularly relevant to an article today. If people want to know the price, they can go to a website selling it and find out what the exact price is today.
Third, the 'uses' section seems to have grown the most. It seems to be developing as a bulleted list, and this should ideally be converted more to prose form. These items added should probably be checked against the general reference citations, and additional references added as needed.
Dr. Cash 18:13, 8 September 2007 (UTC)
thread_title: GA Review

message: A bot  has added class=GA to the WikiProject banners on this page, as it's listed as a good article.  If you see a mistake, please revert, and leave a note on the bot's talk page. Thanks, BOT Giggabot (talk) 05:04, 10 December 2007 (UTC)
thread_title: Automatic addition of "class=GA"

message: I'm writing a lab report on the uptake of plasmids into bacteria.  Apparently, calcium chloride is essential to this process, as one of the steps of the lab involves adding 250 microliters of it into a solution containing E. coli.  10 microliters of plasmids are later added to two out of four beakers of E. coli, before the bacteria are heat shocked.  One question I have to answer is the role of CaCl2 in transfomation.  The problem is, I've forgotten precisely what it does.  Can anyone here help me out before Wednesday?  --Luigifan (talk) 16:57, 21 January 2008 (UTC)
replies: text: The aqueous form of calcium chloride is used in genetic transformation of cells by increasing the cell membrane permeability, inducing competence for DNA uptake (allowing DNA fragments to enter the cell more readily). --Slashme (talk) 05:02, 22 January 2008 (UTC)
thread_title:  Okay, what is the purpose of calcium chloride in transformation? 

message: There needs to be more info about the gel or brine that results when Calcium Chloride has adsorbed a maximum of water.  It is transparent.  It looks like water.  But it seems to have the amazing feature of never evaporating, never drying out!
-69.87.199.223 (talk) 00:13, 24 July 2008 (UTC)
thread_title:  gel or brine 

message: I'm just a form 3 student...i'm here to ask about below two crystals,can they absorb water,and which one absorb the water faster.
1.calcium chloride
2.copper (II) chloride
i'm here to wish anyone can solve this problem for me...
thank you...
from:Michelle Yewen  — Preceding unsigned comment added by 60.50.8.34 (talk) 17:51, 7 June 2011 (UTC)
thread_title:  about calcium chloride & copper (II) chloride... 

message: In this quote:
"Calcium chloride is used to increase the hardness in swimming pools and piscines."
I am confused by the word "piscines".  As far as I know, this is just the French word for "swimming pool".  I looked it up in several dictionaries and cannot find anywhere that it is considered to be a noun in English.  Is this just the work of a confused francophone contributor? 70.116.13.152 (talk) 15:35, 8 July 2012 (UTC)
thread_title:  Piscines? 

message: It seems that the reported water solubility is different from the CRC chemical handbook (rubber bible) by as much as a factor of two. wiki 74.5 g/100mL and CRC handbook 42.13 % (w/w). Granted the units are not the same, but assuming that the solubilisation causes only minor volume changes to the water, the units are certainly comparable.
I would assume that the solubility refers to the anhydrate (as far as I can tell this is not explicitly stated any where). If the solubilities refer to one of the hydrates they could very well be correct.
Troelsbach (talk) 07:50, 18 October 2012 (UTC)
thread_title:  Solubility in water 

message: 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. KDS4444Talk 16:51, 10 May 2013 (UTC)
thread_title: Removal of how-to section on aquaria

message: It's presented as one would be:
    "A chalky taste in the mouth
    Hot flushes
    Lowered blood pressure
    Loss of appetite
    Feeling sick (nausea)
    Being sick (vomiting)
    Constipation
    Stomach pain
    Feeling weak
    Mental disturbances
    Extreme thirst
    Passing a large amount of urine
    Bone pain
    Calcium deposits in the kidney
    Kidney stones
    Irregular heart beat
    Coma" 
But oh, the depressing final line.  — Preceding unsigned comment added by 130.76.96.144 (talk) 19:46, 31 October 2013 (UTC)
replies: text: Fixed to be a bulleted list. You could have too.  vlad§inger  tlk  04:51, 29 January 2014 (UTC)
thread_title:  Is that a poem? 

message: In my opinion, the article looks good excepting the shape of the article. On my iMac, 1920x1080 display, I see the right chembox is longer than the article itself, which does not look aesthetically pleasing.
Qwertyxp2000 (talk) 07:18, 8 September 2014 (UTC)
thread_title:  Article 

message: "Calcium chloride dissolution is exothermic, and the compound is relatively harmless to plants and soil; however, recent observations in Washington state suggest it may be particularly harsh on roadside evergreen trees.[13]"
I'm not sure where the information that it is relatively harmless to plants and soil came from, but I accidentally spilled some on a 10' by 20' area and it killed everything in that area. Absolutely nothing has grown there for 3 years - not even weeds.
74.98.138.194 (talk) 12:23, 12 February 2015 (UTC)
thread_title:  Effect On Plants and Soil 

message: - Clarifying edits to the page were made since this discussion began. This question is no longer a concern.
Spadfield (talk) 15:50, 16 March 2021 (UTC)
thread_title:  Contains metals? 

message: Hello,
I a m suspicious about the image chosen for the crystal structure of CaCl2. The same one is used in the french wikipedia (and probably many others); there is not the correct amount of Ca and Cl ions in this elementary cell, and it does not correspond to the description of the right panel  	Orthorhombic (anhydrous), Tetragonal (anhydrous > 217 °C). The wikipage [Rutile] shows an example of the crystal structure that could correspond to the tetragonal phase, P42mnm, it owuld also be nice to have a diagram of the Pnnm lattice, and to show both in the article. Can anyone confirm that there is a mistake here ? 
Lgostiaux (talk) 18:20, 3 March 2017 (UTC)
thread_title:  Crystal structure 

message: I'm not sure what is meant by "Calcium chloride injection may decrease cardiac toxicity as measured by electrocardiogram." User:Doc James, any comment? --Slashme (talk) 20:23, 12 September 2017 (UTC)
replies: text: Changed to "improve appearance of ECG". Doc James (talk · contribs · email) 20:34, 12 September 2017 (UTC)
thread_title:  cardiac toxicity? 

message: I have no idea what "It is also used to provide inhibition of swelling clays" means. Any ideas? --Slashme (talk) 20:46, 12 September 2017 (UTC)
thread_title:  provide inhibition of swelling clays?