Drug Reagents
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This is an article detailing how to create the individiual reagents. For a chart detailing the different reactions for each reagent please see this article - Reagents Reactions Chart
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What Are Reagents?
Reagents are used to test drugs before you use them. A reagent usually can't prove a drug is the correct drug, and it can never prove how pure it is. But it can prove that something you have is NOT the drug you think it is, and give you a fairly good idea of what it could be.
It is VERY important for people using chemicals and tabs to test them. I know one dude who was supposed to get methylone from a vendor and he got DOI. He would have easily died if he could not tell the difference. A few vendors have also sent bunk and who knows what that is. Another mix up I know of was PCP and Novocaine. Some tabs contain PMA instead of MDMA, and PMA is really dangerous.
Make Your Own Reagents
Here are instructions on how to make reagents (you can also buy testing kits) and some references for a few drugs.
Marquis Test
Reagent Preparation
Reagent 1: Add 8-10 drops (approx. 0.25 ml) of 37% formaldehyde solution to 10 ml of glacial acetic acid.
Reagent 2: Concentrated sulphuric acid.
Procedure
- Place a small amount (1-2 mg of powder, or 1-2 drops of a liquid) of the suspected material in a depression on a spot plate.
- Add one drop of Reagent 1, then one drop of Reagent 2, and stir.
- Observe the color of the mixture.
Mecke Test
Reagent Preparation
Reagent: Dissolve 1 g selenious acid in 100 ml conc. sulfuric acid.
Procedure
- Place a small amount (1-2 mg of powder, or 1-2 drops of a liquid) of the suspected material in a small test tube.
- Add one drop of Mecke Reagent.
Reagent Preparation
- Observe the color of the mixture.
Simon’s Test
Reagent Preparation
reagent 1: Dissolve 2 g of sodium carbonate in 100 ml of water
(=2% aqueous sodium carbonate solution).
Reagent 2: Dissolve 0.9 g of sodium nitroprusside in 90 ml of water (=1% aqueous sodium nitroprusside solution). Methylone Reagent 3: Mix 10 ml of acetaldehyde solution and 10 ml of ethanol (=50% (v/v) ethanolic acetaldehyde solution).
Procedure
- Place a small amount (1-2 mg of powder, or 1-2 drops of a liquid) of the suspected material in a depression on a spot plate.
- Add one drop of Reagent 1 and stir.
- Add one drop of Reagent 2, and then one drop of Reagent 3.
- Observe the color of the mixture.
Gallic Acid Test
Reagent Preparation
Reagent: Dissolve 0.1 g of gallic acid in 20 ml of concentrated sulphuric acid (=0.5% (w/v) solution)
Procedure
- Place a small amount (1-2 mg of powder, or 1-2 drops of a liquid) of the suspected material in a small test tube.
- Add one drop of Gallic Acid Reagent.
- Observe the color of the mixture.
Erlich's Test (aka PDMAB Test)
Reagent Preparation
Reagent: Dissolve 0.5 g p-dimethylaminobenzaledehyde (p-DMAB) in 50 ml ethanol and 50 ml conc. hydrochloric acid.
Procedure
- Place a small amount (1-2 mg of powder, or 1-2 drops of a liquid) of the suspected material in a small test tube.
- Add one drop of Erlich's Reagent.
- Observe the color of the mixture.
Chen's Test
Reagent Preparation
Reagent 1: Add 1 ml of glacial acetic acid to 100 ml of water (=1% (v/v) aqueous acetic acid solution).
Reagent 2: Dissolve 1 g of copper (II) sulphate in 100 ml of water (=1% (w/v) aqueous CuSO4 solution).
Reagent 3: Dissolve 8 g of sodium hydroxide in 100 ml of water (=2N aqueous sodium hydroxide solution).
Procedure
- Place a small amount (1-2 mg of powder, or 1-2 drops of a liquid) of the suspected material in a depression on a spot plate.
- Add 2 drops of Reagent 1.
- Add 2 drops of Reagent 2, then add 2 drops of Reagent 3 and stir.
- Observe the color of the mixture.
Mandelin Test
Reagent Preparation
Reagent: Suspend 1 g of finely powdered ammonium vanadate in 100 ml of concentrated sulfuric acid (relative density 1.86).
Procedure
- Place a small amount (1-2 mg of powder, or 1-2 drops of a liquid) of the suspected material in a small test tube.
- Add one drop of Mandelin Reagent.
- Observe the color of the mixture.
Sodium Nitroprusside Test
Reagent Preparation
Reagent 1: Mix 25 ml of a 1% sodium nitroprusside solution with 1 ml acetaldehyde.
Reagent 2: 2% sodium carbonate solution.
Procedure
- Place a small amount (1-2 mg of powder, or 1-2 drops of a liquid) of the suspected material in a depression on a spot plate.
- Add one drop of Reagent 1 and stir.
- Add one drop of Reagent 2.
- The color is formed immediately after Reagent 2 is added.
