Compare the categories

Pick two product categories to see them side by side. Differences are highlighted.

Category ACategory B

Feature

Heated Tobacco Products

E Cigarettes

Composition

Product type

Processed tobacco stick used with a heating device

Source: PubMed

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Category

—

E Cigarettes

Source: PubMed

Key ingredient

—

[source needed]

Source: EFSA

Processing level

—

Source: PubMed

Quality features

Operating principle

Tobacco is heated without full combustion

Source: PubMed

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Output generated

Aerosol

Source: PubMed

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Temperature range

Controlled heating ~250–350°C, below full combustion

Source: PubMed

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Typical grade / range

—

Entry to premium

Source: FAO

Lifespan / shelf life

—

[source needed]

Source: PubMed

Core emissions

Nicotine

Released through heated tobacco aerosol

Source: WHO

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Tar / total particulate matter

Aerosol particulate matter formed mainly from heated tobacco, water, glycerol and other ingredients

Source: PubMed

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Carbon monoxide (CO)

Formed at much lower levels because the product is heated rather than burned

Source: PubMed

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Carbon dioxide (CO₂)

May be present at lower levels from heating processes

Source: PubMed

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Nitrogen oxides (NOx)

Measured levels depend on heating temperature and device design

Source: PubMed

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Ammonia

May be present in aerosol depending on tobacco processing and formulation

Source: PubMed

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Hydrogen cyanide (HCN)

Expected to be lower because full combustion is avoided

Source: PubMed

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Sulfur dioxide (SO₂)

May be present at trace or lower levels depending on tobacco composition

Source: PubMed

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Particulates

PM2.5

Fine particles present in aerosol with different formation pathway and composition

Source: PubMed

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Ultrafine particles

Ultrafine aerosol particles may be generated during heating

Source: PubMed

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Soot / black carbon

Generally absent or much lower because there is no open burning

Source: PubMed

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PAHs

Benzo[a]pyrene

May be absent or present at much lower measured levels depending on testing conditions

Source: PubMed

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Polycyclic aromatic hydrocarbons (PAHs)

Formation limited by lower heating temperature

Source: PubMed

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Volatile organic compounds (VOCs)

Benzene

May be measured in aerosol at lower levels depending on device and tobacco stick

Source: PubMed

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1,3-butadiene

May be present at lower measured levels

Source: PubMed

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Toluene

May be present in aerosol depending on tobacco and heating conditions

Source: PubMed

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Isoprene

May be present in aerosol at different measured levels

Source: PubMed

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Acrylonitrile

May be absent or present at lower measured levels

Source: PubMed

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Styrene

May be present in aerosol depending on materials and heating conditions

Source: PubMed

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Ethylbenzene

May be present in aerosol at different measured levels

Source: PubMed

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Xylene

May be present in aerosol at different measured levels

Source: PubMed

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Carbonyls

Formaldehyde

May form during heating of tobacco, glycerol or other ingredients

Source: PubMed

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Acetaldehyde

May be present in aerosol from heated tobacco and ingredients

Source: PubMed

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Acrolein

May form from heating of glycerol or other organic components

Source: PubMed

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Crotonaldehyde

May be present in aerosol at different measured levels

Source: PubMed

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Propionaldehyde

May be generated during heating

Source: PubMed

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Butyraldehyde

May be generated during heating

Source: PubMed

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Glyoxal

May be present in aerosol depending on heating conditions

Source: PubMed

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Methylglyoxal

May be present in aerosol from thermal degradation processes

Source: PubMed

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Acetone

May be present in aerosol at different levels

Source: PubMed

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Phenolics

Phenol

May be present from tobacco heating, usually with different levels

Source: PubMed

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Catechol

May be present depending on heating and tobacco composition

Source: PubMed

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Hydroquinone

May be present at different measured levels

Source: PubMed

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Cresols

May be present depending on tobacco and heating temperature

Source: PubMed

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Nitrogen-containing compounds

Pyridine

May be present in aerosol from heated tobacco

Source: PubMed

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Quinoline

May be present at different measured levels

Source: PubMed

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Furan

May form during heating of organic materials

Source: PubMed

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Acrylamide

May be assessed as a thermal degradation product

Source: PubMed

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Tobacco-specific nitrosamines (TSNAs)

NNK

May be present because the product contains tobacco

Source: PubMed

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NNN

May be present because the product contains tobacco

Source: PubMed

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NAT

May be present because the product contains tobacco

Source: PubMed

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NAB

May be present because the product contains tobacco

Source: PubMed

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Metals & trace elements

Cadmium

May be present from tobacco or aerosol pathway

Source: PubMed

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Lead

May be present from tobacco, device components or aerosol pathway

Source: PubMed

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Arsenic

May be present depending on tobacco source

Source: PubMed

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Chromium

May be present from tobacco or device components

Source: PubMed

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Nickel

May be present from tobacco or device heating components

Source: PubMed

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Mercury

May be present depending on tobacco source

Source: PubMed

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Copper

May be present from tobacco or device components

Source: PubMed

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Zinc

May be present from tobacco or device components

Source: PubMed

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Aluminium

May be present from tobacco, packaging or device-related sources

Source: PubMed

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Iron

May be present from tobacco or device components

Source: PubMed

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Other constituents

Glycerol degradation products

May form during heating of glycerol-containing formulations

Source: PubMed

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Propylene glycol degradation products

May form during heating if propylene glycol is used

Source: PubMed

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Other VOCs

Broad group of volatile organic compounds in aerosol

Source: PubMed

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Other semi-volatile organic compounds

May be present in aerosol droplets

Source: PubMed

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Health-related indicators

Nicotine

—

[source needed]

Source: WHO

Combustion

—

Source: PubMed

Risk-free

—

Source: WHO

Health risk level

—

Significant; see authority guidance

[source needed]

Source: WHO

Conclusions from recognized authorities

ArenaH does not draw its own conclusions. Below are positions stated by internationally recognized bodies specifically about how these categories compare.

World Health Organization (WHO)
WHO publishes topic pages and fact sheets that compare consumer product categories on health-relevant criteria. Refer to the topic page for the current public-health position.
European Food Safety Authority (EFSA)
EFSA provides scientific opinions comparing food and feed categories on composition, additives and contaminants relevant to consumer choice.
U.S. Food and Drug Administration (FDA)
The FDA reviews comparative safety, labelling and health-related claims for product categories in the United States.

Similarities

Both categories belong to the broader consumer goods landscape and share common regulatory frameworks for food/product labeling where applicable. Use the highlighted rows in the table to spot the differences.

Neutral summary

Heated Tobacco Products and E Cigarettes differ across composition, processing and consumer experience. Neither comparison is a recommendation — consult labels, local regulation, and qualified professionals for personal decisions.

ArenaH provides educational and informational comparisons only. The content is not medical, legal, financial, or technical advice. Users should consult qualified professionals or official sources before making decisions related to health, safety, law, or major purchases.