|
From the MSDS:
| Chemical Names
|
CAS Numbers |
Exposure Limits
in Air (give units) |
| |
|
ACGIH TLV |
OSHA PEL |
Other(Specify) |
| Perlite |
93-763-70-3 |
10 mg/M 3 |
15 mg/M 3 |
A mineral composed of sodium potassium aluminum silicate of
variable composition, Perlite is considered a nuisance
dust only.
| Alpha-Cristobalite &
Tridymite: |
Less than 0.1% |
| Alpha Quartz: |
0.01 to 0.05%
|
Ray Barkalow - First Rays Orchids - www.firstrays.comPlants, Supplies,
Artwork, Books and Lots of Free Info!
----- Original Message -----
Sent: Thursday, November 17, 2005 1:14
AM
Subject: Re: [OGD] perlite dust
As I understand it perlite is expanded glass. I could be
mistaken on that
but breathing the dust is bad. almost any dust is bad but
some is worse.
like perlite. but wet like iris suggested and its harmless.
i would suggest
keeping it away from the children also because i dont
think eating it is a
good idea.
Roger in
Indy
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OrchidGuide Digest (OGD)
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|
_______________________________________________
the OrchidGuide Digest (OGD)
orchids@orchidguide.com
http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
