Different Types of Nicotine in Vapes – Freebase, Nicotine Salt, and Hybrid Nicotine

Different types of nicotine in vape – freebase, nicotine salt and hybrid nicotine

Freebase is nicotine in a free, unprotonated base form. In nicotine salt, the nicotine is protonated with the help of an acid. Hybrid nicotine is a product designation for formulations with freebase and nicotine salt.

The acid-base equilibrium of the finished liquid affects how the nicotine is distributed between unprotonated and protonated forms. Nicotine content is stated separately in mg/ml.

What is nicotine?

Nicotine is an alkaloid that occurs naturally in the tobacco plant. Nicotine in products can be extracted from tobacco or produced synthetically. Both origins can provide nicotine in free or protonated form.

Nicotine is addictive. Nicotine-containing e-liquid can cause poisoning if handled improperly.

What is freebase nicotine?

Freebase is unprotonated nicotine. Extraction, purification and synthetic production describe how the raw material was manufactured, while freebase describes its chemical form.

10 ml indicates the volume of the bottle. Shortfill is nicotine-free before any possible addition; a nicotine shot, together with the other ingredients, determines the content and nicotine forms of the finished mixture.

The device's power, coil and airflow must be suitable for the finished liquid.

What is nicotine salt?

Nicotine salt is formed with an acid that transfers a proton, a hydrogen ion, to nicotine. This changes the charge of the nicotine.

Benzoic acid is an example of such an acid. Lactic acid and levulinic acid also occur in studied e-liquid formulations. Acid, solvent and proportions affect the equilibrium of the finished liquid; the name nicotine salt does not mean that every nicotine molecule is protonated.

Nicotine salt occurs in bottled liquids and prefilled pods. The VG/PG ratio and nicotine concentration are stated separately.

What is hybrid nicotine?

Hybrid nicotine is the manufacturer's term for a formulation with freebase and nicotine salt. The proportions depend on the formulation.

After mixing, the distribution between unprotonated and protonated nicotine is determined by the acid-base equilibrium in the final liquid. The added proportions of the ingredients and an analytically measured distribution of nicotine forms are therefore different pieces of information.

The difference between freebase, nicotine salt and hybrid nicotine

The comparison distinguishes chemical form and production from product format and power:

Characteristic	Differences between the terms
Chemical form	Freebase: unprotonated nicotine. Nicotine salt: protonation with an acid. Hybrid: formulation designation, not a third nicotine molecule.
Products and formats	Freebase and nicotine salt: can occur in bottled liquids. Hybrid: describes a mixing formulation, not a bottle or pod format. 10 ml indicates volume; shortfill is nicotine-free before any possible addition. A prefilled pod is a different construction from a refillable pod.
Use and power	None of the terms alone indicates a wattage range. Power relates to the device and coil; feed and material compatibility apply to the finished liquid together with the construction.
Manufacturing considerations	Freebase: the free base form should be distinguished from extraction and purification. Nicotine salt: acid affects the protonation. Hybrid: the added ingredient ratio is not automatically the measured distribution of nicotine forms after mixing.

Which products use the different nicotine forms?

Freebase, nicotine salt and hybrid formulations may be found in nicotine-containing bottled liquid. A nicotine-free shortfill contains no nicotine before any possible addition.

Innokin states support for both freebase and nicotine salt in original Trine pods. The liquid must also be suitable for the feed system and materials.

Prefilled pod kits have a designated pod with ready-made liquid. The nicotine form and contents belong to the named pod variant. A sealed pod should not be filled with any bottled liquid or treated as refillable simply because the nicotine form has the same name.