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The reputable site www.epa.gov/ttn/atw/hlthef/chlorine.html has it that
"Chlorine has a suffocating odor; the odor threshold is 0.31 ppm"(7)
reference: (7) J.E. Amoore and E. Hautala. Odor as an aid to chemical safety: Odor thresholds compared with threshold limit values and volatilities for 214 industrial chemicals in air and water dilution. Journal of Applied Toxicology, 3(6):272-290. 1983.
Yet this page, perhaps a mistake with the decimal point, says it smell onyl at > 3ppm, out by x10. — Preceding unsigned comment added by 188.8.131.52 (talk) 09:48, 8 December 2013 (UTC)
Why is it that this article can't be edited (at least by IP users), yet there is no explanation or announcement of this fact placed conspicuously near the top of the article? 184.108.40.206 (talk) 05:52, 16 December 2014 (UTC)
The page was protected last December 8, because of vandalism . This is noted when one tries to edit/view_source (this difference also indicates the protection status). -DePiep (talk) 12:42, 16 December 2014 (UTC)
Thanks for the tip. I understand now that a lock only sometimes appears on the main article page, but it's always visible if you follow the "view source" link. 220.127.116.11 (talk) 23:36, 17 December 2014 (UTC)
The half-life of this hydrophilic nonreactive isotope makes it suitable for geologic dating in the range of 60,000 to 1 million years.
How can one isotope of an element have chemical properties (hydrophilicity, nonreactiveness) that differ significantly from those of another isotope? 18.104.22.168 (talk) 23:30, 17 December 2014 (UTC)
It can't. I suspect that the sentence means Cl-36 is hydrophilic (like all chlorine) then after decay becomes Ar-36, which is non-reactive. But it's not at all clear. I think a few descriptors will have to be removed till the original writer can clarify or provide a ref. SBHarris 00:35, 18 December 2014 (UTC)