Hazardous Substances
BTMPS (Tinuvin 770)
Street names: Tinuvin 770, HALS-770, Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- No psychoactive effects of its own at relevant doses — people take it unknowingly inside fentanyl
- Acts as a CYP enzyme inhibitor, slowing the body's breakdown of fentanyl and extending its sedating effects for hours beyond the norm
- The result: overdose symptoms that outlast naloxone's window
⚠Key risks
- Identified in 2024 as the cutting agent behind mass-overdose clusters in the US Midwest — multiple naloxone-resistant-appearing overdoses traced to the same fentanyl batch
- The 'no naloxone response' pattern isn't because naloxone fails — it's because the sedative keeps being re-released as the body slowly clears the mix; repeat dosing and rescue breathing are essential
- Industrial-grade material carries unknown impurities; chronic effects of inhaling or injecting a plastic stabilizer are unstudied
- Its presence is invisible — users can't taste, see or test for it with fentanyl strips
- A preview of the future: as cutting agents evolve, overdose clusters will increasingly involve non-opioid chemistry that naloxone can't touch
✚Overdose signs
- Sedation that repeatedly returns after naloxone wears off (30–90 minutes) — expect re-dosing
- Prolonged unresponsiveness with slow breathing lasting many hours
- Clusters of simultaneous overdoses from the same batch — treat as contaminated supply, alert others
Category comparison — Hazardous Substances
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| BTMPS (Tinuvin 770) | Not a controlled substance — an industrial chemical with no legitimate human use | Identified in 2024 as the cutting agent behind mass-overdose clusters in the US Midwest — multiple naloxone-resistant-appearing overdoses traced to the same fentanyl batch; The 'no naloxone response' pattern isn't because naloxone fails — it's because the sedative keeps being re-released as the body slowly clears the mix; repeat dosing and rescue breathing are essential | Legitimate industrial chemical ~$5–15/kg — worth pennies per cut dose |
| Potassium Cyanide (KCN) | Not a drug — regulated toxic chemical | Lethal dose ~200–300 mg — death within minutes to an hour; No antidote available outside hospital; hydrogen cyanide gas from acid contact | N/A — sometimes sold fraudulently as 'peaceful exit' scams |
| Air Duster (Computer Duster / Canned Air) | Household product — not a drug; no age restriction on purchase | SUDDEN SNIFFING DEATH — the most deadly inhalant: difluoroethane sensitizes the heart to adrenaline; a sudden fright, chase, or exertion triggers fatal cardiac arrest. First-time users die; Frostbite to lungs and airway from direct spray | $3–$8 per can at any electronics/office store |
| Gasoline / Petrol Huffing | Not a drug — fuel product | Extremely toxic hydrocarbons (benzene, toluene, xylene); Sudden sniffing death — cardiac arrest | Effectively free — siphoned fuel |
| Glue / Solvent Sniffing | Not drugs — adhesives and solvents | The CLASSIC youth inhalant — peak use age 14–15; Sudden sniffing death from cardiac arrest | $1–$5 per tube/can — pocket money prices |
| Refrigerant / Freon Huffing | Not a drug — HVAC refrigerant | EXTREMELY dangerous — refrigerant gases (difluoroethane, tetrafluoroethane) cause sudden cardiac death at high rates; Frostbite to airways | Stolen/siphoned — no price, high death cost |
Street prices are regional estimates. Potency and cuts vary constantly.
?Frequently asked questions
What does BTMPS (Tinuvin 770) look like?
White crystalline granules or powder, sold legitimately as a light stabilizer for plastics and coatings; in drug supplies it's an invisible powder cut into fentanyl
What are the signs of a BTMPS (Tinuvin 770) overdose?
Sedation that repeatedly returns after naloxone wears off (30–90 minutes) — expect re-dosing; Prolonged unresponsiveness with slow breathing lasting many hours; Clusters of simultaneous overdoses from the same batch — treat as contaminated supply, alert others Call emergency services immediately.
How addictive is it?
Identified in 2024 as the cutting agent behind mass-overdose clusters in the US Midwest — multiple naloxone-resistant-appearing overdoses traced to the same fentanyl batch Dependence can develop with regular use.
🔗Sources & further reading
Facts on this page are compiled from these primary sources. External links open in a new tab.