Talk:Methylamine/Archive 1

Archive 1

LD50 Discrepancy

article body quotes 2.5 g/kg for LD50, but tabulated data on right hand side says 100 mg/kg. — Preceding unsigned comment added by 50.136.174.250 (talk) 14:37, 1 September 2013 (UTC)

Headline text

I took a crack at filling in some of the chemical data for this. It would be useful for someone to proofread my work though, and there is a lot more to add.

A material safety data sheet is here and is probably useful for this.

Can anyone recommend open source software for drawing the structure? --Pmetzger 17:36, 22 September 2005 (UTC)

Recommended Software

I use Accelrys to model SMILES and molecules, then save the file as a .pdb and open it with Qutemol.

Microswitch 08:19, 22 January 2007 (UTC)

Really a solvent?

This compound is a gas at room temperature. I understand it is usually found as a solution. Is it really used as a solvent? How??? --Rifleman 82 02:14, 11 November 2007 (UTC)

Ammonia is sometimes used as a solvent, despite having an even lower boiling point, so that shouldn't be a problem. --Itub 13:00, 12 November 2007 (UTC)

I don't know how much it is actually used in practice, but research on its use as a solvent dates from 1906! LIQUID METHYLAMINE AS A SOLVENT, AND A STUDY OF ITS CHEMICAL REACTIVITY. H. D. Gibbs; J. Am. Chem. Soc.; 1906; 28(10); 1395-1422. --Itub 13:05, 12 November 2007 (UTC)

While I've heard of liquid ammonia and supercritical CO2 as solvents, I've never heard of liquid methylamine... See Ed's comments at User talk:Shaddack#Solvent over-enthusiasm?. --Rifleman 82 13:24, 12 November 2007 (UTC)

After further searching, I've only been able to find very few obscure mentions of it as a solvent. So perhaps it doesn't deserve being categorized as a solvent, or even being mentioned as a solvent unless some specific example is given with a reference. --Itub 13:53, 12 November 2007 (UTC)

 THE PLACE THAT METHYLAMINE WAS USED AS A SOLVENT WAS  IN GLASS CLEANER IN HIGH VOLUME. THIS STARTED TO COME TO A END IN THE 1970’S TO 1980’S IT WAS TOTALLY STOP FOR THIS USE 1980. THE REASON IF YOU HAVE EVER HAD ACCESS TO IT WAS IT WAS A LOT MORE STABLE THEN AMMONIUM HYDROXIDE, BUT IT CUTS A LOT BETTER. BOTH ITEMS SET IN THE SUN WILL EVAPORATE BUT THE METHYLAMINE 40% IN WATER WOULD LAST HOURS LONGER. AMMONIUM WILL MAKE A TOXIC GAS AT THAT STRENGTH LEFT OUT. YOU CAN TOUCH 40% METHYLAMINE WITH YOU HANDS AND YOU MITE GET A RASH WHERE AMMONIUM WILL STRIP YOUR SKIN OFF. 
  IT IS NOT TALKED ABOUT BECAUSE OF THE DRUGS THAT CAN BE MADE FROM METHYLAMINE. IT IS TOTAL BAND NOW FOR NONE PROFESSIONAL CLEANERS NOW. YOU WOULD HAVE TO GET A APPROVAL FROM THE DEA NOW TO HAVE, USE AND SALE METHYLAMINE IN GAS OR SOLUTION FROM.  

References

pKa - incorrect value

According to D. H. Everett and B. R. W. Pinsent, Proc. Roy.SOC. (London), 215, 426 (1952) which is cited as a resource of information in Hall, H.K., J. Am. Chem. Soc., 1957, 79, 5441., the number that claimed to be pKa of methylamine is in fact pKa of methylammonium ion. I suggest removing that number. Unfortunately, I was not able to find the right value, but the old one is definitely wrong. 147.231.123.171 (talk) 12:14, 21 April 2011 (UTC)

IUPAC name

Can methylmaine be also called aminomethane under IUPAC naming?

In rule 811.3 of the Blue book, it mentions that if NH2 is the principal group, has to be given the name with the suffix amine, such that methanamine is okay, but aminomethane is not.

http://www.acdlabs.com/iupac/nomenclature/79/r79_510.htm —Preceding unsigned comment added by 27.32.204.217 (talk) 12:55, 22 May 2011 (UTC)

Methamphetamine

A precursor in the production of methamphetamine. =//= Johnny Squeaky 19:17, 11 January 2012 (UTC)

Jesse, GET SAUL — Preceding unsigned comment added by 205.178.22.139 (talk) 05:35, 30 January 2012 (UTC)

Breaking Bad

It really isn't appropriate to have a section about how this chemical relates to a single TV show. This show is one of millions. It's like quoting penicillin as appearing frequently in Medical TV dramas. — Preceding unsigned comment added by 94.7.244.125 (talk) 02:31, 15 May 2015 (UTC)

I came here specifically looking for Breaking Bad info. Damn you Wikipedia squares. — Preceding unsigned comment added by 98.148.215.197 (talk) 08:30, 3 July 2016 (UTC)

As a counterpoint, unlike medical shows where penicillin appears from time to time, Breaking Bad's plot centered around acquiring this chemical for 2 seasons, and is a major driving force behind ancillary sub plots. 50.35.76.29 (talk) 20:17, 12 March 2017 (UTC)

Breaking Bad - The greatest train robbery in history valued at $200 million should get a mention. — Preceding unsigned comment added by 2600:8800:1382:2600:1460:635A:C497:FA52 (talk) 01:46, 1 April 2019 (UTC)

Why does "monomethylamine" redirect here?

Is it a synonym, or a related compound of some kind? Equinox ◑ 17:29, 16 September 2016 (UTC)

It is a synonym (to distinguish from dimethylamine and trimethylamine). -- Ed (Edgar181) 14:51, 13 March 2017 (UTC)