Tellurium; why the. . . .
Posted 04 May 2005 - 03:19 PM
I bought a large bag of kno3, only to find that it also contained 4% te.
The "te" in lower case letters on the bag told me that the kno3 was contaminated by Tellurium. 'Right, I knew te was metallic, but the name. . . Perhaps named after Edward Teller. Teller, the father of the H-b**b. This must mean it's possibly radio-active, or toxic; probably both.
And what was a poison doing in fertiliser, anyway?
Finding that tellurium was indeed toxic, I started getting paranoid about handling the stuff.
I could find no mention anywhere of it being used in fertiliser.
The thick plottened! Much later(days)I examined a packet of ordinary fertiliser, and looking at the list of TRACE ELEMENTS, I had a little "eureka moment".
'Yep, that's what it was, finally; bloody trace elements, like mg, cu, etc.
'Luckily, it can be removed by recrystallisation.
'Seemed funny at the time.
Posted 04 May 2005 - 05:26 PM
Thanks Alan, Its compounds, yes; the free element, I dunno. Phosgene(CCl2O)too, if memory serves(WW1 poison gas in my kno3?).
You'd know if there was Te in there. Its compounds smell like garlic *very* strongly.
'Probably outdoor handling recommended[sic].
Posted 08 July 2007 - 10:35 AM
the other Garlicy (it`s not a word but it should be) compounds are from Arsenic, Selenium and Phosphorus, all quite toxic too.
Posted 16 August 2007 - 07:52 PM
"Warning Extremely offensive smell"
It was permanently stored in a fume cupboard and no, I didn't try sniffing it.
Posted 29 October 2007 - 07:44 PM
I once worked for a construction chemical maufacturer as a process operator. On one particular occassion, one of the products I had to make required 250ml of DMF (Dimethylformamide) as a constituent of the mix. Fetching the 245 litre drum on the fork lift, I could see there was a massive skull and crossbones and the word 'Toxic' on the label - I knew that even though I'd never come across this before, I should treat it with caution. Once I'd decanted the required amount into a small plastic bucket, my boss advised me to smell it.
(Turns out I was right to be cautious about it - DMF is NASTY stuff. The same guy once questioned why I asked for a respirator when dealing with 1000 litres of concentrated HCL, as the person who did my job before I joined the company didn't use one. I asked my boss what happened to that person - "Oh, he left because he became ill". I too left because I became ill. Thank god that company is no longer trading.)
Still thinking of the label I'd seen, I didn't want to smell it so I said "No, it's toxic" and he said "No seriously - you've GOT to smell this - you'll recognise it straight away - tell me what the smell is". He then proceeded to pick up the bucket and took a HUGE deep breath from it right in front of his face. He then urged me to smell it again, exclaiming that it was fine to do so. So I nervously took a VERY small sniff of it. Then, with a big smile on his face, he said - "See what I mean - fannies!"
(Apologies if the use of that word offended anyone reading this post)
Edited by GZ22, 29 October 2007 - 07:56 PM.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users