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Possible to Make My Own Mecke Reagent Test

O

opi8

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Joined
May 21, 2010
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I've been interested in these testing kits in the past, but I hadn't heard of the Mecke test which can test for certain opiods. I'm aware that Marquis test kits contain formaldehyde, which is a controlled precursor. From what I understand, selenious acid and sulfuric acid aren't restricted chemicals, however I may be wrong; please let me know if I am.

I'm thinking it could help me find and possibly get a vague idea about the adulterants used in the various rocks and powders that I come across, or see if I've been ripped off completely.

Would it be possible for me to make a trip to hardware store for example and purchase what I needed to perform my own Mecke tests?
 
^ Too expensive, not easily found, possible records kept, etc.
 
I think it's possible but I don't know the details of it. I know someone who made their own reagent/s, but I can't remember if it was mecke. Prob not much help, eh.
 
Marquis
Marquis' reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of formaldehyde and concentrated sulfuric acid, which is dripped onto the substance being tested. The United States Department of Justice method for producing the reagent is the addition of 100 mL of concentrated (95–98%) sulfuric acid to 5 mL of 40% formaldehyde.

Mandelin
The Mandelin reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of ammonium vanadate and concentrated sulfuric acid. Its primary use is for the detection of ketamine and PMA[1]

The United States Department of Justice method for producing the reagent is the addition of 100 mL of concentrated (95–98%) sulfuric acid to 1 g of ammonium vanadate.

Mecke
The Mecke reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of selenious acid and concentrated sulfuric acid[1], which is dripped onto the substance being tested.

The United States Department of Justice method for producing the reagent is the addition of 100 mL of concentrated (95–98%) sulfuric acid to 1 g of selenious acid.[2]
 
Selenous (aka Selenious) acid is extremely toxic. Having worked with various reagents in the past, this was one I was not prepared to produce in large amounts.

Like many selenium compounds, selenous acid is highly toxic, and ingestion of any significant quantity of selenous acid is usually fatal. Symptoms of selenium poisoning can occur several hours after exposure, and may include stupor, nausea, severe hypotension and death.
Click to expand...

wikipedia

If you're keen on making any of these reagents, do your homework, employ the proper equipment and adhere to safety procedures!

And BTW, sulphuric acid is "regarded" as a drug precursor.
 
phase_dancer said:
Selenous (aka Selenious) acid is extremely toxic. Having worked with various reagents in the past, this was one I was not prepared to produce in large amounts.



wikipedia

If you're keen on making any of these reagents, do your homework, employ the proper equipment and adhere to safety procedures!

And BTW, sulphuric acid is "regarded" as a drug precursor.
Click to expand...

Thanks for the info p_d, probably not worth the hassle if that's the case.
 
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