feacetech - 22-11-2007 at 14:40
I have a hot paraffin liquid bath heated to at least 105 up to 115C. The goal is 105 but the bath plays up, over heats sometimes forcing it to smoke.
Now this stuff stinks its fills the lab and saturates my clothes, apart from the explosive risk (has been like this for a number of years before I was
even in the lab on 24/7) is the a health risk to my lungs i.e emphysema etc
[Edited on 27-11-2007 by feacetech]
evil_lurker - 22-11-2007 at 22:26
Dude, get yourself some heavy mineral oil laxative.
The shiznit is good for 200+ºC before it even starts to smoke.
feacetech - 23-11-2007 at 11:09
Na im going to get rid of it all together just tryn to get some ammo, im after a temperature probe controled hot plate magnetic strrer.
[Edited on 27-11-2007 by feacetech]
kclo4 - 23-11-2007 at 11:54
If you pour hot/boiling wax in water it will ignite and blow flames all over!
so... i think even dripping some water in it could be very hazardous.
Be careful
vulture - 24-11-2007 at 06:45
Learn to spell and use grammar BEFORE posting please.
MagicJigPipe - 24-11-2007 at 10:08
I think English is his second language, vulture.
And, oh my god I would love so much to have a temperature probe controlled hotplate. No more constant adjusting of the temp to compensate for
evaporation and different liquids/amounts. I wonder what one would cost on the low end. Time to find out.
Fleaker - 24-11-2007 at 12:34
Yes MagicJigPipe, those are like a Glas-col mantle minder. Every once in awhile you'll find one on eBay for $100 or so.
evil_lurker - 24-11-2007 at 13:21
Yeah I know, someone outbid me on the last one.. lost it to a bid of $62. Still kicking myself in the ass over it!
BromicAcid - 24-11-2007 at 14:09
I wouldn't think that it would be a major health risk, I mean, it's not as hot as a burning candle and those are a constant source of liquid paraffin.
They also create a lot of smoke and the only real health hazard I have heard of those is that some manufactuers use lead in the wick.
As for temperature control, check out a J-Kem, those things are awesome, they hold at plus or minus a degree in my experience, they learn and will
keep your bath where you want it (though constantly adding or taking away from your bath can mess them up but not by too much).
The_Davster - 24-11-2007 at 14:31
I have had a parafin wax bath bath spill on me before. It spilled onto the hotplate and was boiling into a cloud of parafin vapour. I inhaled some
of this, and the only effect was my throat feeling weird(I imagine just from condensed wax vapour) for a day or so.
I also had the pleasure of spilling several ml of water into a parafin oil bath at ~120C at one point. No explosions, just loud cracking and bubbling
comimg from the parafin bath.
Nearly shat myself at the loud cracking sounds, as I did not know yet that I had added water accidently, and the bath was being used for making
guanidine nitrate from molten ammonium nitrate and calcium cyanamide.
MagicJigPipe - 24-11-2007 at 22:19
Seems like there cheapest temp regulator is nearly 600 bucks... I can dream though. Guess I'll have to start selling crack.
that was a joke, btw...
[Edited on 25-11-2007 by MagicJigPipe]
feacetech - 26-11-2007 at 13:04
The heating bath at the moment is quite large; it holds about 7.5L of paraffin liquid density 0.87-0.89 g/mL (not melted paraffin wax).
There are some relatively cheap units (stirrer plus thermoregulator combo) from VELP Scientifica that I am looking at, my chem supplier has them on
Christmas special.
On closer inspection I almost got had. The units that look cheap in the leaflet I got from my supplier are not what they appear in the picture. They
have a picture of a AREC.X with a thermoregulator. But the units they have on special are the AREC and the ARE with no thermoregulator the description
makes it sound like it has aswell. upto 1200rpm temperature regulation from room to 370C for only $595. temperature regulation being the dial.
Bastards they got my hopes up.
So maybe heavy mineral oil wont be to bad any other oil suggestions, the stupid thing is I use it to heat up tallow.
[Edited on 27-11-2007 by feacetech]
bio2 - 26-11-2007 at 18:24
Hard hydrogenated cooking oil will not smoke at 200 degrees and has some advantages over a hot plate
(more even heat).