Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
Perlite
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
==Properties== [[File:Perlite-nps-02316.jpg|thumb|Perlite boulders with [[fireweed]] in foreground]] Perlite softens when it reaches temperatures of {{convert|850|β|900|Β°C}}. Water trapped in the structure of the material vaporises and escapes, and this causes the expansion of the material to 7β16 times its original volume. The expanded material is a brilliant white, due to the reflectivity of the trapped bubbles. Unexpanded ("raw") perlite has a [[bulk density]] around 1100 kg/m<sup>3</sup> (1.1 g/cm<sup>3</sup>), while typical expanded perlite has a bulk density of about 30β150 kg/m<sup>3</sup> (0.03β0.150 g/cm<sup>3</sup>).<ref>{{Cite journal|title = Perlite toxicology and epidemiology β a review|journal = Inhalation Toxicology|date = 2014-04-01|issn = 0895-8378|pmc = 4002636|pmid = 24601903|pages = 259β270|volume = 26|issue = 5|doi = 10.3109/08958378.2014.881940|first1 = L. Daniel|last1 = Maxim|first2 = Ron|last2 = Niebo|first3 = Ernest E.|last3 = McConnell| bibcode=2014InhTx..26..259M }}</ref>
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)