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Core Topics => Drugs => Phenethylamines => Topic started by: smfadmin on November 20, 2025, 10:40:34 AM
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Methamphetamine Melt & Residue Behaviour Reference
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1. PURE METHAMPHETAMINE (HCl)
Melt Characteristics:
Liquefies instantly with gentle heat.
Fully transparent liquid — no cloudiness.
Thin, watery melt that moves rapidly across glass.
Minimal bubbling; any bubbles pop immediately.
Forms a uniform melt pool with no unmelted patches.
Residue Characteristics:
Recrystallises into clear, needle-like shards.
No fog, chalk, or powdery film.
After full vapourisation: almost no residue.
Brown or black marks only occur from overheating.
Decomposition Clues:
Overheating produces sharp ammonia-like smell and brown streaks.
Pure MA does not caramelise unless exposed to excessive heat.
2. MSM (Methylsulfonylmethane) Melt Behaviour:
Melts slower than MA.
Melt is thick and syrupy.
Cloudy melt with persistent bubbles.
Moves sluggishly.
Residue Behaviour:
Leaves white crystalline residue that doesn’t fully liquefy again.
Chalky recrystallisation.
Fogging on glass builds over multiple cycles.
Decomposition:
Forms a persistent white film rather than caramelising.
3. Sugars (Glucose, Lactose, etc.) Melt Behaviour:
Thick, sometimes yellowish melt.
Caramelises easily.
Sticky and uneven melt pool.
Residue Behaviour:
Brown or black tar spots even at low heat.
Sticky residue that cannot recrystallise.
Decomposition:
Sweet-burnt smell.
4. Isopropylbenzylamine (iPBA) Melt Behaviour:
Higher melt temperature than MA.
Thicker melt, slightly opaque.
Moves sluggishly — forms globs.
Residue Behaviour:
Opaque, chunky recrystallisation.
White granular crust after vapourising.
Decomposition:
Harsh chemical or plasticky smell.
Grit-like residue.
5. Caffeine Melt Behaviour:
Does not fully melt.
Frothy, uneven bubbling.
Yellowish or brownish melt.
Residue Behaviour:
Brown crust.
No recrystallisation.
Decomposition:
Bitter, burnt smell.
6. Lidocaine (and similar local anaesthetics) Melt Behaviour:
Oily, thick melt.
Aggressive bubbling.
Hazy liquid that never turns clear.
Residue Behaviour:
Waxy coating.
Opaque plate-like recrystallisation.
Decomposition:
Plastic/electrical burn smell.
7. Ephedrine / Pseudoephedrine Contamination Melt Behaviour:
Melts slower than MA.
Slightly yellow melt.
Longer-lasting bubbles.
Residue Behaviour:
Yellowish film.
Mixed clear + cloudy recrystallisation.
Decomposition:
Sharp medicinal smell.
8. Industrial / Unknown Contaminants Melt Behaviour:
Unpredictable melt.
Strong bubbling.
Multi-coloured or tan melt.
Residue Behaviour:
Sticky patches.
Pitting of glass.
Multi-colour crust.
Decomposition:
Harsh solvent or burnt-plastic smell.
9. Purity Levels — Quick Visual Diagnostics Excellent Purity:
Clear melt
Fast, thin movement
Glass-clear recrystallisation
Minimal residue
Medium Purity:
Slightly cloudy melt
Slower movement
Patchy recrystallisation
Light fogging
Heavily Cut:
Thick or sticky melt
Persistent bubbles
White or brown residue
Cloudy recrystallisation
Tar spots
Fake Shard / iPBA Indicators:
High melt temperature
Opaque melt
Chunky recrystallisation
Intense chemical smell
10. Behaviour Patterns That Always Signal Impurities
Caramelisation = sugars or overheated organic cuts.
White crust that won’t melt = MSM or iPBA.
Sticky brown patches at low heat = sugar cuts.
Opaque melt = heavy adulterants.
Foaming = caffeine or lidocaine.
:))
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