Sciencemadness Discussion Board
Not logged in [Login - Register]
Go To Bottom

Printable Version  
Author: Subject: Asbestos
itchyfruit
Hazard to Others
***




Posts: 231
Registered: 15-6-2009
Member Is Offline

Mood: No Mood

[*] posted on 11-11-2010 at 07:37
Asbestos


A friend of mine recently asked if i knew how to test for Asbestos, i do realise their lots of different types and having done a bit of research found out the most popular method seems to be to study a dyed sample under a microscope.
This got me thinking about a couple of things firstly is this the only method and secondly can Asbestos be made into any other compounds (preferably safe ones) by chemical process.
View user's profile View All Posts By User
ScienceSquirrel
Super Moderator
*******




Posts: 1863
Registered: 18-6-2008
Location: Brittany
Member Is Offline

Mood: Dogs are pets but cats are little furry humans with four feet and self determination! :(

[*] posted on 11-11-2010 at 07:49


The standard method is polarised light microscopy.
It is very sensitive and the fibres can be distinguished from other similar substances eg glass fibre, etc.
A review is here;

http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_tabl...
The only safe thing to do with asbestos is leave it in the ground! :)
View user's profile View All Posts By User
mr.crow
International Hazard
*****




Posts: 884
Registered: 9-9-2009
Location: Canada
Member Is Offline

Mood: 0xFF

[*] posted on 11-11-2010 at 11:29


I find it funny your name is _itchy_fruit and you are talking about asbestos



Double, double toil and trouble; Fire burn, and caldron bubble
View user's profile View All Posts By User
itchyfruit
Hazard to Others
***




Posts: 231
Registered: 15-6-2009
Member Is Offline

Mood: No Mood

[*] posted on 11-11-2010 at 15:42


Quote: Originally posted by mr.crow  
I find it funny your name is _itchy_fruit and you are talking about asbestos


Why ?

Btw does anyone know how to make itching powder. :D
View user's profile View All Posts By User
Sedit
International Hazard
*****




Posts: 1934
Registered: 23-11-2008
Member Is Offline

Mood: Manic Expressive

[*] posted on 11-11-2010 at 18:14


Why is asbestos toxic? What is it that causes cancer and such because it does not seem to fix the bill of normal carcinogens to me.




Knowledge is useless to useless people...

"I see a lot of patterns in our behavior as a nation that parallel a lot of other historical processes. The fall of Rome, the fall of Germany — the fall of the ruling country, the people who think they can do whatever they want without anybody else's consent. I've seen this story before."~Maynard James Keenan
View user's profile View All Posts By User
Lambda-Eyde
International Hazard
*****




Posts: 855
Registered: 20-11-2008
Location: Norway
Member Is Offline

Mood: Cleaved

[*] posted on 11-11-2010 at 18:19


http://en.wikipedia.org/wiki/Asbestos#Mechanisms_which_might...
View user's profile View All Posts By User This user has MSN Messenger
Magpie
lab constructor
*****




Posts: 5929
Registered: 1-11-2003
Location: USA
Member Is Offline

Mood: Chemistry: the subtle science.

[*] posted on 25-5-2017 at 19:30


I remember using loose asbestos fibers as a filtering medium in my quantitative analysis class in college in 1962. The fibers were placed in a Gooch crucible as a slurry forming a porous mat. The utility of it was that it could be fired in a muffle furnace without losing weight.

A few times in my own lab I have wished that I had some available both for the above purpose and in sheet form for high temperature work.

Recently I found some 1/4" sheet at a garage sale in the form of a fireproof metal box for valuables. I estimate it contains about 3 ft^2 of sheet asbestos:




asbestos fireproof box.jpg - 162kB asbestos fireproof box 2.jpg - 143kB

[Edited on 26-5-2017 by Magpie]




The single most important condition for a successful synthesis is good mixing - Nicodem
View user's profile View All Posts By User
NedsHead
National Hazard
****




Posts: 399
Registered: 9-12-2014
Location: South Australia
Member Is Offline

Mood: No Mood

[*] posted on 25-5-2017 at 23:24


I was thinking about a safe and affordable way to dispose of asbestos roofing just the other day, a property I'm interested in has a second dwelling with an asbestos roof. I was thinking along the lines of using a propane burner under a stainless 44 gallon drum of sodium hydroxide solution and destroying the sheets one at a time

[Edited on 26-5-2017 by NedsHead]
View user's profile View All Posts By User
Sulaiman
International Hazard
*****




Posts: 2445
Registered: 8-2-2015
Location: Shah Alam, Malaysia
Member Is Offline


[*] posted on 26-5-2017 at 01:05
NedsHead


1) most municipal dumps (in UK, so I assume AU also) have asbestos waste facilities,
probably cheaper than your proposed plan.

2) sheet asbestos releases very little dust if not sawn, drilled, filed etc.

3) asbestos sheet can be really useful to a home scientist, keep some (safely)




CAUTION : Hobby Chemist, not Professional or even Amateur
View user's profile View All Posts By User
diddi
International Hazard
*****




Posts: 697
Registered: 23-9-2014
Location: Victoria, Australia
Member Is Offline

Mood: Fluorescent

[*] posted on 26-5-2017 at 01:34


wear a mask. spray it with water to keep wet and bust it into small bits. shove it in the bin in a garbage bag a bit at a time and say nothing.

btw it is easy to identify. heres a sample of the nasty carcinogenic form from Wittenoom, Western Australia



Asbestos - blue 8d (Medium).JPG - 152kB Blue asbestos M4c (Medium).jpg - 230kB

the fluffy fibres spall constantly. this is the raw material stored out of the weather. it becomes windborne easily and the entire mining town has been closed to the public

[Edited on 26-5-2017 by diddi]




Beginning construction of periodic table display
View user's profile View All Posts By User
NedsHead
National Hazard
****




Posts: 399
Registered: 9-12-2014
Location: South Australia
Member Is Offline

Mood: No Mood

[*] posted on 26-5-2017 at 01:47


The cost of asbestos removal and disposal here in Aus is an absolute rort, easily running into the $10s of thousands, it's common for dodgy operators to illegally dump asbestos in the streets to avoid the high costs.

The house needs renovating and will be getting a new roof at some stage anyway, I'm just thinking of ways to save a buck in the future.

I will absolutely keep a sheet of two for the hobby

@diddi;)

Edit, case in point: http://www.abc.net.au/news/2017-05-26/asbestos-dumped-south-...

I turned on the telly and this was the first news update I see, I swear it wasn't me lol

[Edited on 26-5-2017 by NedsHead]

[Edited on 26-5-2017 by NedsHead]
View user's profile View All Posts By User
CharlieA
National Hazard
****




Posts: 426
Registered: 11-8-2015
Location: Missouri, USA
Member Is Offline

Mood: No Mood

[*] posted on 26-5-2017 at 16:03


Quote: Originally posted by Magpie  
I remember using loose asbestos fibers as a filtering medium in my quantitative analysis class in college in 1962. The fibers were placed in a Gooch crucible as a slurry forming a porous mat. The utility of it was that it could be fired in a muffle furnace without losing weight.

A few times in my own lab I have wished that I had some available both for the above purpose and in sheet form for high temperature work.

[Edited on 26-5-2017 by Magpie]


I remember the same uses (I'm class of1962), and just the other day was also wishing I had some.;)
View user's profile View All Posts By User
Melgar
Anti-Spam Agent
*******




Posts: 2002
Registered: 23-2-2010
Location: NYC
Member Is Offline

Mood: Aromatic

[*] posted on 26-5-2017 at 17:03


I have a 1-cm thick sheet of something that is probably asbestos. It's from roughly the WWII era, and was used as heat shielding, so I can't imagine what else it'd be. Asbestos is only carcinogenic if you inhale it, so I keep the pieces in a bag in a drawer. In the US, they've decided that covering up asbestos is okay in buildings, so I guess that should work for me.
View user's profile View All Posts By User
Texium (zts16)
Administrator
Thread Moved
26-5-2017 at 19:31

  Go To Top