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Amazon Shop: Calcium Carbonate, Dehydrator, San Pedro

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Invisiblebob5

Registered: 03/01/09
Posts: 1,292
Is Calcium Hydroxide safe? *DELETED*
    #11411183 - 11/08/09 03:11 PM (8 years, 1 month ago)

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Offlinekoppie
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Re: Is Calcium Hydroxide safe? [Re: bob5]
    #11411455 - 11/08/09 04:04 PM (8 years, 1 month ago)

It's caustic, but that doesn't make it toxic. Wash your hands after using it. Besides, it won't get past the second step into the process. There will be nothing of it left in the end product.


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InvisibleEntropymancer
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Re: Is Calcium Hydroxide safe? [Re: koppie]
    #11411506 - 11/08/09 04:17 PM (8 years, 1 month ago)

Not to mention those hazards listed are for very high levels of exposure (chronic inhalation of the dust, or ingestion of far more than is typically used).

Edible lime is used in making traditional corn tortillas (the corn is treated with the lime before grinding it to flour).  It's used orally in conjunction with chewing coca and betel nut.

Yes, it's caustic, but relatively mildly (compare, for example, with NaOH or KOH).  It's an irritant, but not by any means dangerous in a normal context.


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OfflineLucidx
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Re: Is Calcium Hydroxide safe? [Re: Entropymancer]
    #11411530 - 11/08/09 04:20 PM (8 years, 1 month ago)

It's safe but it hurts.

I've chewed betel nut with it and it burned the fuck out of my mouth


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Para todos todo, para nosotros nada


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InvisibleEntropymancer
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Re: Is Calcium Hydroxide safe? [Re: Lucidx]
    #11411542 - 11/08/09 04:22 PM (8 years, 1 month ago)

Quote:

Lucidx said:
It's safe but it hurts.

I've chewed betel nut with it and it burned the fuck out of my mouth



That means you used too much.  It will dry out and mildly irritate the part of the mouth it's in contact with, but it shouldn't burn you.

That said, for betel chewing I prefer calcium carbonate.


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OfflineLucidx
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Re: Is Calcium Hydroxide safe? [Re: Entropymancer]
    #11411591 - 11/08/09 04:31 PM (8 years, 1 month ago)

I used only a pinch, I guess my mouth is sensative to edible lime.


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Invisiblebob5

Registered: 03/01/09
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Re: Is Calcium Hydroxide safe? [Re: Lucidx]
    #11411654 - 11/08/09 04:42 PM (8 years, 1 month ago)

thanks for the answers.  still wary though.. as 25g is being used;

how does the calcium hydroxide not get past the second step?
does the limonene cancel it out or something?

cheers
b
--------------- --------------- -------------

1 - Powderize your dried cactus. Mix 100 grams of dried powderized cactus with 25 grams of calcium hydroxide. Add 300 ml water to make it feel wet but not watery. Mix for about 5 minutes.

2 - Add 300 ml of d-limonene. Mix well. Let sit a few hours.

3 - Pour off the d-limonene through a filter. (It's really cool if you use a French Coffee Press for this. Using a French Coffee Press you press the cactus mix and squeeze out the d-limonene to get every last drop of d-limonene out. Then filter it through a paper coffee filter.)

4 - Add 25 ml of vinegar to the d-limonene. Mix thoroughly.

5 - Separate the vinegar from the d-limonene (the vinegar is at the bottom, the d-limonene at the top). This vinegar will contain mescaline acetate. Evaporate your vinegar in a food dehydrator at 155 F to get waxy amber slightly impure mescaline acetate. NOTE: to separate the vinegar from the d-limonene you can use a glass gravy separator or a separatory funnel. Seperatory funnels are considered laboratory glassware and are banned for individual use in some locations. A gravy separator works almost just as well and can be found at some local kitchenware shops.

6 - Repeat steps 4 and 5 at least 2-3 times.

7 - Repeat steps 2 - 6 at least 2 times.


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InvisibleEntropymancer
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Re: Is Calcium Hydroxide safe? [Re: bob5]
    #11411728 - 11/08/09 04:55 PM (8 years, 1 month ago)

Quote:

bob5 said:
thanks for the answers.  still wary though.. as 25g is being used;

how does the calcium hydroxide not get past the second step?
does the limonene cancel it out or something?




Basically, yes.

Limonene is a nonpolar solvent.  Caclium hydroxide , being a salt (ie composed of oppositely-charge ions) is quite polar, and therefor quite insoluble in limonene.


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Invisiblebob5

Registered: 03/01/09
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Re: Is Calcium Hydroxide safe? [Re: Entropymancer]
    #11412020 - 11/08/09 05:43 PM (8 years, 1 month ago)

ah, i see...

so the Calcium hydroxide settles into the cactus pulp at the bottom.
> and then you filter out the cactus muck and Calcium Hydroxide..


and if you don't have a 'french coffee press' normal paper coffee filters will do it on their own?

finally; see how you said 'quite polar' 'quite insoluble' 
did you mean, some of it gets through (as in 'quite' -  not fully insoluble/polar) ?

thanks alot


bob


Edited by bob5 (11/08/09 06:08 PM)


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InvisibleEntropymancer
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Re: Is Calcium Hydroxide safe? [Re: bob5]
    #11412319 - 11/08/09 06:29 PM (8 years, 1 month ago)

Quote:

bob5 said:
and if you don't have a 'french coffee press' normal paper coffee filters will do it on their own?




That'd be a hell of a mess with coffee filters... cactus sludge plugs them right up.

And if you like coffee or tea, a french press is a great investment anyway.

Quote:

finally; see how you said 'quite polar' 'quite insoluble' 
did you mean, some of it gets through (as in 'quite' -  not fully insoluble/polar) ?



I meant "quite" as in "very substantially".  I don't believe it's possible for a partition coefficient to be exactly zero (else it would stand to reason that it could likewise be infinite, which seems a physical impossibility).  But partition coefficients can approach zero to the point that it makes no difference. The partition coefficient of calcium hydroxde between water and limonene is such a case where the partition coefficient is close enough to zero as to make no difference.

Or, in short: Don't worry about it.  You're more apt to get calcium hydroxide in the limonene as an undissolved microparticulate.... which is again not going to happen to any degree you need to worry about.



And at any rate, when you add the vinegar to the limonene, any infinitessimal fraction of calcium hydroxide that's left will be neutralized to water and calcium acetate (which is used as a food additive in candy, so no need to worry about the toxicity of this compound that isn't apt to be present in any significant quantity anyway).


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Invisiblebob5

Registered: 03/01/09
Posts: 1,292
Re: Is Calcium Hydroxide safe? [Re: Entropymancer]
    #11412791 - 11/08/09 07:44 PM (8 years, 1 month ago)

thanks alot man...

sorry - as you can probably tell i get a bit anal about Health and Safety  :tongue2:



so you reckon use the french coffee press and then skip the coffee filters..
basically; - if you can be arsed with the mess, is it beneficial to give it a second {paper coffee} filter?


cheers  +  5:mushroom2:


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InvisibleEntropymancer
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Re: Is Calcium Hydroxide safe? [Re: bob5]
    #11412841 - 11/08/09 07:51 PM (8 years, 1 month ago)

Oh yeah, once you've french-pressed out the majority of the cactus, a paper filter is no problem, don't skip that step.

I just meant in terms of the initial filtration, separating the bulk of the cactus gunk from limonene with only paper filters would be a mess. The little bit of cactus gunk left after the first filtration won't be enough to clog the paper badly.


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Invisiblebob5

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Posts: 1,292
Re: Is Calcium Hydroxide safe? [Re: Entropymancer]
    #11412858 - 11/08/09 07:53 PM (8 years, 1 month ago)

oh right...  coolio.


yeah, i could see that being particularly messy.    :shitstorm:



thanks again dude.
all the best
b


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Amazon Shop: Calcium Carbonate, Dehydrator, San Pedro

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