Comments | liquidcarbon: Badass organics.

liquidcarbon

Badass organics.

Jan 30, 2008 10:18

According to Handbook of Chemistry and Physics (in its 71st reincarnation, 1990-1991), isopropyl iodide boils at 891 °C, while 1-tetratriacontanol (saturated C-34 alcohol, or n-carnatyl alcohol) melts at 913 °C. I don't understand how do these oopsies make it to the final edition (not only this one, I assume) - they are so easy to spot! Just out ( Read more... )

mistake, personal

Comments 13

1 out of 2 anonymous January 30 2008, 23:25:56 UTC

I have the same edition and the 2-iodopropane (page 3-413) is correct in my CRC (at least when compared to the Aldrich catalog) at 89.4°C. The 1-tetratriacontanol is wrong in my book as well.

I wonder if mine is a different printing.

-Chemgeek

[1] me and my -10°F are pissed off. Enjoy your rain, jerk ;)

Re: 1 out of 2 anonymous January 30 2008, 23:42:28 UTC

I just checked my 39th edition (1957-1958). Both entries are listed correctly.
1-tetratriacontanol melts at 91.9-92.2°C.

Interestingly, the mp of isopropyl iodide (as it was listed in 1957) is listed as 89.5°C. Somewhere along the way it lost a tenth of a degree.

Re: 1 out of 2 liquidcarbon January 30 2008, 23:54:48 UTC

Same - correctly on 3-413, but not in boiling point index - 3-600

Re: 1 out of 2 anonymous January 31 2008, 00:07:53 UTC

Interesting. They list it twice in the 71st edition. Once as "propane, 2-iodo" [compound 11870] and as "isopropyl iodide" [compound 12307]. The mp for the latter (page 3-427) is wrong (891.4°C).

-Chemgeek

chaostheory635 January 31 2008, 02:50:09 UTC

I wish someone would misplace a decimal in my bank account balance! Srsly, just shift it one place to the right?

Grrrrr. Would you rather have our FREEZING rain? Wouldn't it make you feel more at home? :P

liquidcarbon January 31 2008, 06:32:56 UTC

Nah, freezing rains are not common in Russia.

One place to the right... don't you think it's too modest?

chaostheory635 January 31 2008, 22:50:22 UTC

Seriously, no freezing rain? Weird. Wet snow, though, right?
...Hmmmm. Yes, one place to the right is not enough. Especially because I just paid rent.

liquidcarbon February 2 2008, 10:32:23 UTC

Wet snow, right.
I have not read it.

Thread 6

ext_55561 February 1 2008, 10:44:48 UTC

Alaskan Winter ale is too damn sweet for me. I guess one can warm it up and make mulled beer for rainy weather.

One infuriating mistake commonly found in many compendiums is the cooling bath for -100C supposedly obtainable from dry ice and ether. In fact this mix will produce about -75C like most solvents that do not freeze above CO2 sublimation point.

BUt one can make a -100C bath from Et2O and liquid nitrogen

liquidcarbon February 2 2008, 10:29:36 UTC

Anyone who ever has wondered "why -78 is common?" should know why is that and don't believe in -100 with CO2.

liquidcarbon February 3 2008, 12:27:30 UTC

What do you expect, I was raised on crappy lagers. I realize that ales are supposed to be bitter, but I really liked this one!

Maybe I should visit Chemgeek? :)