Home | Community | Message Board


Azarius
Please support our sponsors.

Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Amazon Shop for: Calcium Carbonate, Gypsum, Perlite

Jump to first unread post. Pages: 1
OfflineTorey
consciousparadox

Registered: 11/11/02
Posts: 82
Loc: somewhere over the rainbo...
Last seen: 10 years, 10 months
Plaster of Paris as Gypsum. Cancer warning?
    #1135517 - 12/12/02 02:05 PM (14 years, 1 day ago)

I am posting out of concern raised by a warning on this product:

"WARNING: This product contains a chemical known to the State of California to cause cancer."

One may also note that Plaster of Paris contains calcium sulphate, calcium carbonate, and crystalline silica. Which of these chemicals is the cancer agent?

I've read many posts suggesting Plaster of Paris as a source of Gypsum, calcium sulphate. Hopefully nobody is being indirectly harmed due to the use of this product.

I have searched the forums for Plaster of Paris and found no thread regarding whether or not it may be dangerous.


--------------------
peace and love!


Post Extras: Print Post  Remind Me! Notify Moderator
OfflinepsilocybinjunkieM
relaxin
Male

Registered: 03/18/01
Posts: 13,338
Last seen: 3 hours, 22 minutes
Trusted Cultivator
Re: Plaster of Paris as Gypsum. Cancer warning? [Re: Torey]
    #1135526 - 12/12/02 02:10 PM (14 years, 1 day ago)

Do not use plaster of paris!
jeesh :crazy:


Post Extras: Print Post  Remind Me! Notify Moderator
OfflineMyceLehfan
Stranger

Registered: 06/16/08
Posts: 4
Last seen: 8 years, 4 months
Re: Plaster of Paris as Gypsum. Cancer warning? [Re: Torey]
    #8540564 - 06/19/08 02:01 PM (8 years, 5 months ago)

Of the ingredients listed in Plaster of Paris the warning most likely pertains to crystalline silica which is in clay and acts as a drying agent. Like clay plasters that contain crystalline silica can be inhaled if you are not wearing the appropriate breathing apparatus. I remember when we where working with dry clay models in sculpture class the teacher warned us that inhaling silica dust causes silicosis and cancer because it is like inhaling glass. The same is true about asbestos and perlite (white volcanic glass). When you inhale crystalline silica the lymph cells of the immune system ingest the piece of glass lodged in the lungs and a sac is formed where the glass is housed in the body. As far as I know its fucking impossible to hock that shit up because it becomes attached to tissue in silicosis, and so it is a cancer causing hazard for this reason, like asbestos. So as long as you are not breathing the fine floaty glass dust. But none of those are toxic as far as I know. Calcium carbonate is like, baking soda or something fine. It should be cool, just wet it down while your working with it that is the primary hazard.


Post Extras: Print Post  Remind Me! Notify Moderator
Offlinerev 766
gum flappin' scallywag
Male User Gallery


Folding@home Statistics
Registered: 04/08/08
Posts: 886
Loc: $tate of Inebriation, Pat...
Last seen: 1 year, 2 months
Re: Plaster of Paris as Gypsum. Cancer warning? [Re: MyceLehfan]
    #8540647 - 06/19/08 02:29 PM (8 years, 5 months ago)

sodium bicarbonate is baking soda.

calcium carbonate is limestone.

it sounds like you got lime plaster. pure plaster of paris is merely the hemihydrate of gypsum.

find some pure plaster of paris that doesn't have any other bullshit in it, wet it, let it dry, then crush it up.

you're better off springing for a bag of gypsum or busting a hole in your drywall, though.


--------------------
praise "Bob"
did you mean shmooed-R.I.P.

"drought besets the mind, decay besets the man"-me


Post Extras: Print Post  Remind Me! Notify Moderator
OfflineRogerRabbitM
Bans for Pleasure
 User Gallery


Registered: 03/26/03
Posts: 41,968
Loc: USA Mountain Northwest
Last seen: 2 months, 14 days
Trusted Cultivator
Re: Plaster of Paris as Gypsum. Cancer warning? [Re: rev 766]
    #8541153 - 06/19/08 05:29 PM (8 years, 5 months ago)

You're not supposed to use plaster of paris.  Use gypsum.  It should be in every garden center.  If not, get a sheet of drywall at the lumber yard, and smash it up to use.
RR


--------------------
Download Let's Grow Mushrooms



semper in excretia sumus solim profundum variat


Post Extras: Print Post  Remind Me! Notify Moderator
Jump to top. Pages: 1

Amazon Shop for: Calcium Carbonate, Gypsum, Perlite

Mushrooms, Mycology and Psychedelics >> Mushroom Cultivation

Similar ThreadsPosterViewsRepliesLast post
* lime and calcium carbonate question (ive searched with no clear answer) capnstemz 946 2 12/30/05 04:27 PM
by FooMan
* substitute for gypsum? robinhood2 2,806 6 09/09/02 03:12 PM
by zeta
* When to add gypsum.
( 1 2 all )
thedefone 2,646 25 01/05/08 11:51 AM
by fastfred
* crushed oyster shell or calcium carbonate 0003 3,346 12 10/09/06 11:27 PM
by RogerRabbit
* Gypsum, good or bad? Captain Cubensis 2,467 10 12/04/07 12:29 AM
by Alphanautics
* Gypsum Phish_Dude 568 3 11/11/08 09:23 PM
by Phish_Dude
* Relationship between Hydrated Lime and Calcium Carbonate? Solidcell 2,350 10 09/26/06 11:06 PM
by Synaethesia
* Using gypsum in bulk sub Rahz 2,754 7 04/07/07 04:42 PM
by RogerRabbit

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: Magash, Shroomism, george castanza, Prisoner#1, RogerRabbit, Citric, total, FooMan, 13shrooms, stonesun, EvilMushroom666, cronicr, PussyFart
4,709 topic views. 23 members, 95 guests and 31 web crawlers are browsing this forum.
[ Toggle Favorite | Print Topic | Stats ]
Search this thread:
Shroom Supply
Please support our sponsors.

Copyright 1997-2016 Mind Media. Some rights reserved.

Generated in 0.024 seconds spending 0.006 seconds on 14 queries.