Dangerous Chemicals in E-Cigarettes

Last updated on July 30th, 2023


Dangerous Chemicals in E-Cigarettes

Are There Really Dangerous ECigarette Chemicals?

There’s a great deal of concern regarding the ingredients in e-cigarettes, especially since there are many conflicting reports flooding the media about the chemicals in e-liquids. 

If you smoke and are considering switching to electronic cigarettes you may be wondering if they’re even worth a try.

Many are asking,

Why Should I Experiment with Something That May Be Just as Dangerous as Tobacco?

This article will help to answer those questions!

There’s lots to say about electronic cigarette safety, but since you probably googled Chemicals or Ingredients in E-Cigarettes we’ll start by addressing that question.

Here Are Some Answers to Common Questions About E-Cigarette Chemicals 

What Are the Ingredients in An E-Cigarette?

Any respectable electronic cigarette company’s website will offer a page that lists their ingredients. Some include ingredient safety reports called Safety Data Sheets.

E-Liquids should only contain Vegetable Glycerin (USP Grade), food grade flavorings, Propylene Glycol (USP Grade) and Nicotine, (although you can buy e-liquids without nicotine from just about every seller of e-juice ). You can also buy e-liquids that are infused with CBD.

fda logoPropylene Glycol (PG) is an FDA approved food additive used in everything from cake mixes to asthma inhalers. It is also found in nasal sprays such as Afrin; oral, injectable and topical pharmaceuticals, and beauty products such as lipstick, creams and lubricants including baby wipes. PG is in candies such as Gummy Bears. It is sometimes used in non-toxic antifreeze. 

Note: Antifreeze, in an of itself, is not an ingredient in e-cigarette liquids.

Vegetable Glycerin is found in dairy and protein foods. Some dairy products include cheese, yogurt and powdered milk. VG can be found in processed meat, poultry and eggs.

E-Cigarettes come in many flavors, so of course there are other USP Grade ingredients which vary with the flavors. 

Some e-liquids, like those from Kind Juice are made of ingredients that are totally organic. They contain zero PG.

Read More About Organic ELiquids

What About the Diacetyl, Acetyl Propionyl and Acetoin Scare?

A 2015 study made sensational headlines when it was reported that some e-liquids contained diacetyl, a chemical that could cause bronchitis obliterans, or “popcorn lung”. Acetyl Propionyl and Acetoin were also cited.

The now notorious study did not find any of the above ingredients at harmful levels in e-cigarettes and the study has since been debunked by research scientists including one of the world’s most renowned researcher, Dr. Konstantinos E. Farsalinos. 

Source: http://www.ecigarette-research.org/research/index.php/whats-new/whatsnew-2015/236-da2

Read: Read More About Getting Too Much Nicotine

The Vapor Industry’s Response

There was an extremely fast reaction on the part of e-liquid companies when the issues with flavorings containing diacetyl came to light. All companies either pulled the line that had that flavoring or reformulated those e-liquids. 

The tests were NOT performed using standard e-cigarettes; they were using modified high wattage devices designed to be more like miniature stage-type fog machines. 

Diacetyl has been known to cause bronchitis obliterans (popcorn lung) in factory workers. Out of the thousands of factory workers who were tested, only a tiny fraction of 1% (eight people to be precise) are alleged to have come down with bronchitis obliterans.

In other words, even if you breathe massive amounts of airborne diacetyl (thousands of times more than any vapor product could expose you to), all day, every day for a decade or more, it’s still overwhelmingly unlikely you’re going to get “popcorn lung.”

The study never mentioned that tobacco has more than 100 times the diacetyl then the absolute worst e-cig (750 times the average one). Tobacco isn’t considered a risk factor for popcorn lung.

Here Are the Ingredients Typically Found in Tobacco-Flavored E-Cigarettes: 

  • Ethyl Maltol- an organic compound that is common flavorant in some confectioneries.
  • Beta-Damascenone- a food grade flavoring used in wines and other foods requiring a floral essence.
  • Vanillin- Used in ice cream, baked goods, medicines and many other products that require a vanilla taste or aroma, it is an organic crystal that forms on the outside of the vanilla bean.
  • Trimethylpyrazine- An FDA approved flavoring used in caramel chocolate cocoa and coffee


Menthol Flavored E-cigs Also Contain These Ingredients:

  • Menthol- an organic compound that occurs naturally in mint and some other plants.
  • Menthone- a naturally occurring organic compound and a constituent of the essential oils of pennyroyal, peppermint, Mentha arvensis, Pelargonium geraniums, and others.
  • Cineole- is a natural substance found in eucalyptus and other essential oils. It has a pungent, spicy, cooling taste and is know to have anti-inflammatory properties.

Other flavored e-cigarettes use both natural and synthetic flavorings all of which are FDA approved and are used in food products.

But What About the “Chemicals? Why Are There Reports That E-Cigarettes Have Chemicals that Are Not Safe?

Keep in mind that every ingredient (even natural ingredients) in every product we use and consume has a chemical makeup, so all ingredients are, in fact “chemicals”. The media loves to twist things which is why the very word “chemical” has a negative connotation. 

UPDATE: In September of 2019 there were reports of respiratory failure which were presented as “vaping related”.

Many experts on vaping including the NY Dept. of Health and world renound expert on vaping, Dr. Farsalinos have issued statements indicating that current e-cigarette vapers, or those considering vaping to quit smoking should not be alarmed by these incidents as they only refer to black market vaping product.

Here is the FDA Statement:

“Samples tested by the states or by the FDA as part of this ongoing investigation have been identified as vaping products containing tetrahydrocannabinol (or THC, a psychoactive component of the marijuana plant) and further, most of those samples with THC tested also contained significant amounts of Vitamin E acetate. Vitamin E acetate is a substance present in topical consumer products or dietary supplements, but data are limited about its effects after inhalation.”

Don’t E-Cigarettes Contain Formaldehyde?


Formaldehyde levels found in the New England Journal of Medicine study were associated with “dry puff conditions”, not normal vaping conditions. 

According to Dr. Farsalinos,

The atomizer had a resistance of 2.1 Ohms. This means that at 3.3 volts, the energy delivery was about 5.5 watts and at 5 volts it was 12 watts. It is more than obvious that the findings of very high levels of formaldehyde are a result of overheating! Lack of experience on e-cigarettes and no contact with vapers can result in such erroneous and unrealistic results, which can create confusion and misinformation both in the scientific community and among users and potential users of e-cigarettes.

Farsalinos quote dry puff vaping

Read more about formaldehyde in e-cigarettes

Are There Scientific Reports That Say E-Cigarettes Are Safer Than Cigarettes? 

Yes. The true science about e-cigarette safety is emerging, while the old junk science is being exposed and ridiculed for being fraudulent and politically motivated.

The now famous report from Public Health England confirmed that e-cigarettes are at least 95% safer than tobacco cigarettes. 

The Federal Food & Drug Administration (FDA) now recognizes that vaping is an important part of tobacco harm reduction.

Health Impact of E-cigarettes

A 3.5-year study was conducted by Riccardo Polosa, Director of the Institute for Internal Medicine and Clinical Immunology of the University of Catania, Italy. The study of regular daily e-cigarette users who have never smoked, “found no detectable changes in lung health in never smokers who have been regularly vaping for at least 4 years. This included “no significant changes in any of the health outcomes including measures of lung function and lung inflammation.” No significant structural abnormalities could be identified and no respiratory symptoms were reported.

Current FDA Commissioner, Ned Sharpless, M.D., issued a statement in September, 2019 updating the agency’s commitment to save vaping. Director Sharpless noted, “Any product that can diminish the use of combustible cigarettes substantially has to be considered of enormous potential value”…”There are some data, both epidemiological and from direct clinical trials, that some electronic nicotine delivery systems (ENDS, which includes products known as “e-cigarettes”) can reduce the use of combustible cigarettes and may be less harmful than traditional cigarettes.”

The FDA requirements for all manufacturers of vaping products (including e-liquids and vaping hardware) became applicable in June 2019.

All Vape Products on the Market Must Meet These Standards and Requirements:

– Registering an establishment and submitting a lists of products, including labeling and advertisements.

– Submitting tobacco health documents. (FDA interprets “health, toxicological, behavioral, or physiologic” to include, for example, cell-based, tissue-based, animal, or human studies, computational toxicology models, information on addiction, intentions to use, cognition, emotion, motivation, and other behavioral effects at both the population-level (epidemiology) as well as the individual level (such as abuse liability).

– Submitting ingredient listings – These include: ingredients, components, and additives.

– Including a required warning statement on packages and advertisements for ENDS (including certain ENDS components, such as e-liquids) stating, “WARNING: This product contains nicotine. Nicotine is an addictive chemical.”

SOURCE: https://www.fda.gov/news-events/fda-voices-perspectives-fda-leadership-and-experts/how-fda-regulating-e-cigarettes

Former FDA Commissioner Dr. Scott Gottlieb appeared in a Washington Post Live Interview expressing the agency’s new approach to tobacco regulations. 

On January 31st, 2019 Dr Gottlieb tweeted this.

Dr. Scott Gottlieb tweet on ecig benefits

But Isn’t Nicotine Toxic?


nicotine vs caffeine

Nicotine vs Caffeine

No. Unless you consume huge amounts of nicotine, (and it’s unlikely you would do so), tests now show that nicotine is no more harmful to you than caffeine. An exhaustive study that overturned dubious experiments dating back to the 1850’s, was conducted by Dr. Jacques Le Houezec, Consultant in Public Health, Tobacco Dependence, Amzer Glas, Rennes, France. He concluded:

-Nicotine lethal dose has been overestimated. 
-Long-term use of pure nicotine has not been shown to pose health
problems in animals.
-The health risks from pure nicotine in humans appear to be small if any.
-Pure nicotine use, as with e-cigarettes, seems less addictive than when
smoked in tobacco, and is considerably less harmful.

Read More About Getting Too Much Nicotine 

Wasn’t There a Report That Found Trace Elements of Carcinogens in E-Cigarettes?

Professor Carl Phillips of CASAA.org was one of many medical professionals who exposed the now notorious FDA study as being pure junk science. He indicated that if that study was recognized…

“We’d have to ban half the foods that are available. I mean, the FDA study really didn’t find any cancer risk. That study was basically pure propaganda…..there’s no significance of those findings whatsoever from a scientific or health standpoint. From a political standpoint, the fact that they did that was quite significant.”


E-cigarettes have become the preferred smoking alternative for millions of smokers and have gained the support of prominent health organizations and scientists worldwide who recognize the product’s tremendous value as an effective way to save millions of lives.

Are e-cigarettes emphatically “safe”? The best answer is to say that it’s too early to tell. Are they “safer” than traditional cigarettes? Scientists and e-cigarette advocates say that they are emphatically safer than tobacco cigarettes and can reduce the harm caused by smoking tobacco.

The Future of Vaping

It is great to know that public health agencies (even the FDA) are changing their views on e-cigarette safety. Still, it will take time for the public to forget about the early junk science reports about dangerous chemicals in vapor products.

Most people trust public health agencies who tell us what not to eat and even what not to breathe. To cite and article published on vaping review site, CloudNineECigReviews.com,

“If you’re really worried about ingesting dangerous chemicals, don’t drink beer, wine or water; or eat tuna, sardines or brussels sprouts because they contain toxic amounts of arsenic,.. but that’s not the trending story.”

…..Or check out Tim Dowlings hilarious article in the Guardian, “Everything Gives You Cancer”

If you’re still worried about the chemicals in electronic cigarettes, or whether it’s safe to switch from smoking cigarettes to vaping e-cigarettes, have a look at some of the chemicals in a tobacco cigarette.

• Acetanisole
• Acetic Acid
• Acetoin
• Acetophenone
• 6-Acetoxydihydrotheaspirane
• 2-Acetyl-3- Ethylpyrazine
• 2-Acetyl-5-Methylfuran
• Acetylpyrazine
• 2-Acetylpyridine
• 3-Acetylpyridine
• 2-Acetylthiazole
• Aconitic Acid
• dl-Alanine
• Alfalfa Extract
• Allspice Extract,Oleoresin, and Oil
• Allyl Hexanoate
• Allyl Ionone
• Almond Bitter Oil
• Ambergris Tincture
• Ammonia
• Ammonium Bicarbonate
• Ammonium Hydroxide
• Ammonium Phosphate Dibasic
• Ammonium Sulfide
• Amyl Alcohol
• Amyl Butyrate
• Amyl Formate
• Amyl Octanoate
• alpha-Amylcinnamaldehyde
• Amyris Oil
• trans-Anethole
• Angelica Root Extract, Oil and Seed Oil
• Anise
• Anise Star, Extract and Oils
• Anisyl Acetate
• Anisyl Alcohol
• Anisyl Formate
• Anisyl Phenylacetate
• Apple Juice Concentrate, Extract, and Skins
• Apricot Extract and Juice Concentrate
• 1-Arginine
• Asafetida Fluid Extract And Oil
• Ascorbic Acid
• 1-Asparagine Monohydrate
• 1-Aspartic Acid
• Balsam Peru and Oil
• Basil Oil
• Bay Leaf, Oil and Sweet Oil
• Beeswax White
• Beet Juice Concentrate
• Benzaldehyde
• Benzaldehyde Glyceryl Acetal
• Benzoic Acid, Benzoin
• Benzoin Resin
• Benzophenone
• Benzyl Alcohol
• Benzyl Benzoate
• Benzyl Butyrate
• Benzyl Cinnamate
• Benzyl Propionate
• Benzyl Salicylate
• Bergamot Oil
• Bisabolene
• Black Currant Buds Absolute
• Borneol
• Bornyl Acetate
• Buchu Leaf Oil
• 1,3-Butanediol
• 2,3-Butanedione
• 1-Butanol
• 2-Butanone
• 4(2-Butenylidene)-3,5,5-Trimethyl-2-Cyclohexen-1-One
• Butter, Butter Esters, and Butter Oil
• Butyl Acetate
• Butyl Butyrate
• Butyl Butyryl Lactate
• Butyl Isovalerate
• Butyl Phenylacetate
• Butyl Undecylenate
• 3-Butylidenephthalide
• Butyric Acid]
• Cadinene
• Caffeine
• Calcium Carbonate
• Camphene
• Cananga Oil
• Capsicum Oleoresin
• Caramel Color
• Caraway Oil
• Carbon Dioxide
• Cardamom Oleoresin, Extract, Seed Oil, and Powder
• Carob Bean and Extract
• beta-Carotene
• Carrot Oil
• Carvacrol
• 4-Carvomenthenol
• 1-Carvone
• beta-Caryophyllene
• beta-Caryophyllene Oxide
• Cascarilla Oil and Bark Extract
• Cassia Bark Oil
• Cassie Absolute and Oil
• Castoreum Extract, Tincture and Absolute
• Cedar Leaf Oil
• Cedarwood Oil Terpenes and Virginiana
• Cedrol
• Celery Seed Extract, Solid, Oil, And Oleoresin
• Cellulose Fiber
• Chamomile Flower Oil And Extract
• Chicory Extract
• Chocolate
• Cinnamaldehyde
• Cinnamic Acid
• Cinnamon Leaf Oil, Bark Oil, and Extract
• Cinnamyl Acetate
• Cinnamyl Alcohol
• Cinnamyl Cinnamate
• Cinnamyl Isovalerate
• Cinnamyl Propionate
• Citral
• Citric Acid
• Citronella Oil
• dl-Citronellol
• Citronellyl Butyrate
• itronellyl Isobutyrate
• Civet Absolute
• Clary Oil
• Clover Tops, Red Solid Extract
• Cocoa
• Cocoa Shells, Extract, Distillate And Powder
• Coconut Oil
• Coffee
• Cognac White and Green Oil
• Copaiba Oil
• Coriander Extract and Oil
• Corn Oil
• Corn Silk
• Costus Root Oil
• Cubeb Oil
• Cuminaldehyde
• para-Cymene
• 1-Cysteine Dandelion Root Solid Extract
• Davana Oil
• 2-trans, 4-trans-Decadienal
• delta-Decalactone
• gamma-Decalactone
• Decanal
• Decanoic Acid
• 1-Decanol
• 2-Decenal
• Dehydromenthofurolactone
• Diethyl Malonate
• Diethyl Sebacate
• 2,3-Diethylpyrazine
• Dihydro Anethole
• 5,7-Dihydro-2-Methylthieno(3,4-D) Pyrimidine
• Dill Seed Oil and Extract
• meta-Dimethoxybenzene
• para-Dimethoxybenzene
• 2,6-Dimethoxyphenol
• Dimethyl Succinate
• 3,4-Dimethyl-1,2 Cyclopentanedione
• 3,5- Dimethyl-1,2-Cyclopentanedione
• 3,7-Dimethyl-1,3,6-Octatriene
• 4,5-Dimethyl-3-Hydroxy-2,5-
• 6,10-Dimethyl-5,9-Undecadien-
• 3,7-Dimethyl-6-Octenoic Acid
• 2,4 Dimethylacetophenone
• alpha,para-Dimethylbenzyl Alcohol
• alpha,alpha-Dimethylphenethyl Acetate
• alpha,alpha Dimethylphenethyl Butyrate
• 2,3-Dimethylpyrazine
• 2,5-Dimethylpyrazine
• 2,6-Dimethylpyrazine
• Dimethyltetrahydrobenzofuranone
• delta-Dodecalactone
• gamma-Dodecalactone
• para-Ethoxybenzaldehyde
• Ethyl 10-Undecenoate
• Ethyl 2-Methylbutyrate
• Ethyl Acetate
• Ethyl Acetoacetate
• Ethyl Alcohol
• Ethyl Benzoate
• Ethyl Butyrate
• Ethyl Cinnamate
• Ethyl Decanoate
• Ethyl Fenchol
• Ethyl Furoate
• Ethyl Heptanoate
• Ethyl Hexanoate
• Ethyl Isovalerate
• Ethyl Lactate
• Ethyl Laurate
• Ethyl Levulinate
• Ethyl Maltol
• Ethyl Methyl Phenylglycidate
• Ethyl Myristate
• Ethyl Nonanoate
• Ethyl Octadecanoate
• Ethyl Octanoate
• Ethyl Oleate
• Ethyl Palmitate
• Ethyl Phenylacetate
• Ethyl Propionate
• Ethyl Salicylate
• Ethyl trans-2-Butenoate
• Ethyl Valerate
• Ethyl Vanillin
• 2-Ethyl (or Methyl)-(3,5 and 6)-Methoxypyrazine
• 2-Ethyl-1-Hexanol, 3-Ethyl -2 –
• 2-Ethyl-3, (5 or 6)-Dimethylpyrazine
• 5-Ethyl-3-Hydroxy-4-Methyl-2 (5H)-Furanone
• 2-Ethyl-3-Methylpyrazine
• 4-Ethylbenzaldehyde
• 4-Ethylguaiacol
• para-Ethylphenol
• 3-Ethylpyridine
• Eucalyptol
• Farnesol
• D-Fenchone
• Fennel Sweet Oil
• Fenugreek, Extract, Resin, and Absolute
• Fig Juice Concentrate
• Food Starch Modified
• Furfuryl Mercaptan
• 4-(2-Furyl)-3-Buten-2-One
• Galbanum Oil
• Genet Absolute
• Gentian Root Extract
• Geraniol
• Geranium Rose Oil
• Geranyl Acetate
• Geranyl Butyrate
• Geranyl Formate
• Geranyl Isovalerate
• Geranyl Phenylacetate
• Ginger Oil and Oleoresin
• 1-Glutamic Acid
• 1-Glutamine
• Glycerol
• Glycyrrhizin Ammoniated
• Grape Juice Concentrate
• Guaiac Wood Oil
• Guaiacol
• Guar Gum
• 2,4-Heptadienal
• gamma-Heptalactone
• Heptanoic Acid
• 2-Heptanone
• 3-Hepten-2-One
• 2-Hepten-4-One
• 4-Heptenal
• trans -2-Heptenal
• Heptyl Acetate
• omega-6-Hexadecenlactone
• gamma-Hexalactone
• Hexanal
• Hexanoic Acid
• 2-Hexen-1-Ol
• 3-Hexen-1-Ol
• cis-3-Hexen-1-Yl Acetate
• 2-Hexenal
• 3-Hexenoic Acid
• trans-2-Hexenoic Acid
• cis-3-Hexenyl Formate
• Hexyl 2-Methylbutyrate
• Hexyl Acetate
• Hexyl Alcohol
• Hexyl Phenylacetate
• 1-Histidine
• Honey
• Hops Oil
• Hydrolyzed Milk Solids
• Hydrolyzed Plant Proteins
• 5-Hydroxy-2,4-Decadienoic Acid delta-Lactone
• 4-Hydroxy-2,5-Dimethyl-3(2H)-Furanone
• 2-Hydroxy-3,5,5-Trimethyl-2-Cyclohexen-1-One
• 4-Hydroxy -3-Pentenoic Acid Lactone
• 2-Hydroxy-4-Methylbenzaldehyde
• 4-Hydroxybutanoic Acid Lactone
• Hydroxycitronellal
• 6-Hydroxydihydrotheaspirane
• 4-(para-Hydroxyphenyl)-2-Butanone
• Hyssop Oil
• Immortelle Absolute and Extract
• alpha-Ionone
• beta-Ionone
• alpha-Irone
• Isoamyl Acetate
• Isoamyl Benzoate
• Isoamyl Butyrate
• Isoamyl Cinnamate
• Isoamyl Formate, IsoamylHexanoate
• Isoamyl Isovalerate
• Isoamyl Octanoate
• Isoamyl Phenylacetate
• Isobornyl Acetate
• Isobutyl Acetate
• Isobutyl Alcohol
• Isobutyl Cinnamate
• Isobutyl Phenylacetate
• Isobutyl Salicylate
• 2-Isobutyl-3-Methoxypyrazine
• alpha-Isobutylphenethyl Alcohol
• Isobutyraldehyde
• Isobutyric Acid
• d,l-Isoleucine
• alpha-Isomethylionone
• 2-Isopropylphenol
• Isovaleric Acid
• Jasmine Absolute, Concrete and Oil
• Kola Nut Extract
• Labdanum Absolute and Oleoresin
• Lactic Acid
• Lauric Acid
• Lauric Aldehyde
• Lavandin Oil
• Lavender Oil
• Lemon Oil and Extract
• Lemongrass Oil
• 1-Leucine
• Levulinic Acid
• Licorice Root, Fluid, Extract
and Powder
• Lime Oil
• Linalool
• Linalool Oxide
• Linalyl Acetate
• Linden Flowers
• Lovage Oil And Extract
• 1-Lysine]
• Mace Powder, Extract and Oil
• Magnesium Carbonate
• Malic Acid
• Malt and Malt Extract
• Maltodextrin
• Maltol
• Maltyl Isobutyrate
• Mandarin Oil
• Maple Syrup and Concentrate
• Mate Leaf, Absolute and Oil
• para-Mentha-8-Thiol-3-One
• Menthol
• Menthone
• Menthyl Acetate
• dl-Methionine
• Methoprene
• 2-Methoxy-4-Methylphenol
• 2-Methoxy-4-Vinylphenol
• para-Methoxybenzaldehyde
• 1-(para-Methoxyphenyl)-1-Penten-3-One
• 4-(para-Methoxyphenyl)-2-Butanone
• 1-(para-Methoxyphenyl)-2-Propanone
• Methoxypyrazine
• Methyl 2-Furoate
• Methyl 2-Octynoate
• Methyl 2-Pyrrolyl Ketone
• Methyl Anisate
• Methyl Anthranilate
• Methyl Benzoate
• Methyl Cinnamate
• Methyl Dihydrojasmonate
• Methyl Ester of Rosin, Partially Hydrogenated
• Methyl Isovalerate
• Methyl Linoleate (48%)
• Methyl Linolenate (52%) Mixture
• Methyl Naphthyl Ketone
• Methyl Nicotinate
• Methyl Phenylacetate
• Methyl Salicylate
• Methyl Sulfide
• 3-Methyl-1-Cyclopentadecanone
• 4-Methyl-1-Phenyl-2-Pentanone
• 5-Methyl-2-Phenyl-2-Hexenal
• 5-Methyl-2-Thiophene-carboxaldehyde
• 6-Methyl-3,-5-Heptadien-2-One
• 2-Methyl-3-(para-Isopropylphenyl) Propionaldehyde
• 5-Methyl-3-Hexen-2-One
• 1-Methyl-3Methoxy-4-Isopropylbenzene
• 4-Methyl-3-Pentene-2-One
• 2-Methyl-4-Phenylbutyraldehyde
• 6-Methyl-5-Hepten-2-One
• 4-Methyl-5-Thiazoleethanol
• 4-Methyl-5-Vinylthiazole
• Methyl-alpha-Ionone
• Methyl-trans-2-Butenoic Acid
• 4-Methylacetophenone
• para-Methylanisole
• alpha-Methylbenzyl Acetate
• alpha-Methylbenzyl Alcohol
• 2-Methylbutyraldehyde
• 3-Methylbutyraldehyde
• 2-Methylbutyric Acid
• alpha-Methylcinnamaldehyde
• Methylcyclopentenolone
• 2-Methylheptanoic Acid
• 2-Methylhexanoic Acid
• 3-Methylpentanoic Acid
• 4-Methylpentanoic Acid
• 2-Methylpyrazine
• 5-Methylquinoxaline
• 2-Methyltetrahydrofuran-3-One
• (Methylthio)Methylpyrazine (Mixture Of Isomers)
• 3-Methylthiopropionaldehyde
• Methyl 3-Methylthiopropionate
• 2-Methylvaleric Acid
• Mimosa Absolute and Extract
• Molasses Extract and Tincture
• Mountain Maple Solid Extract
• Mullein Flowers
• Myristaldehyde
• Myristic Acid
• Myrrh Oil
• beta-Napthyl Ethyl Ether
• Nerol
• Neroli Bigarde Oil
• Nerolidol
• Nona-2-trans,6-cis-Dienal
• 2,6-Nonadien-1-Ol
• gamma-Nonalactone
• Nonanal
• Nonanoic Acid
• Nonanone
• trans-2-Nonen-1-Ol
• 2-Nonenal
• Nonyl Acetate
• Nutmeg Powder and Oil
• Oak Chips Extract and Oil
• Oak Moss Absolute
• 9,12-Octadecadienoic Acid (48%)
And 9,12,15-Octadecatrienoic Acid (52%)
• delta-Octalactone
• gamma-Octalactone
• Octanal
• Octanoic Acid
• 1-Octanol
• 2-Octanone
• 3-Octen-2-One
• 1-Octen-3-Ol
• 1-Octen-3-Yl Acetate
• 2-Octenal
• Octyl Isobutyrate
• Oleic Acid
• Olibanum Oil
• Opoponax Oil And Gum
• Orange Blossoms Water, Absolute, and Leaf Absolute
• Orange Oil and Extract
• Origanum Oil
• Orris Concrete Oil and Root
• Palmarosa Oil
• Palmitic Acid
• Parsley Seed Oil
• Patchouli Oil
• omega-Pentadecalactone
• 2,3-Pentanedione
• 2-Pentanone
• 4-Pentenoic Acid
• 2-Pentylpyridine
• Pepper Oil, Black And White
• Peppermint Oil
• Peruvian (Bois De Rose) Oil
• Petitgrain Absolute, Mandarin Oil and Terpeneless Oil
• alpha-Phellandrene
• 2-Phenenthyl Acetate
• Phenenthyl Alcohol
• Phenethyl Butyrate
• Phenethyl Cinnamate
• Phenethyl Isobutyrate
• Phenethyl Isovalerate
• Phenethyl Phenylacetate
• Phenethyl Salicylate
• 1-Phenyl-1-Propanol
• 3-Phenyl-1-Propanol
• 2-Phenyl-2-Butenal
• 4-Phenyl-3-Buten-2-Ol
• 4-Phenyl-3-Buten-2-One
• Phenylacetaldehyde
• Phenylacetic Acid
• 1-Phenylalanine
• 3-Phenylpropionaldehyde
• 3-Phenylpropionic Acid
• 3-Phenylpropyl Acetate
• 3-Phenylpropyl Cinnamate
• 2-(3-Phenylpropyl)Tetrahydrofuran
• Phosphoric Acid
• Pimenta Leaf Oil
• Pine Needle Oil, Pine Oil, Scotch
• Pineapple Juice Concentrate
• alpha-Pinene, beta-Pinene
• D-Piperitone
• Piperonal
• Pipsissewa Leaf Extract
• Plum Juice
• Potassium Sorbate
• 1-Proline
• Propenylguaethol
• Propionic Acid
• Propyl Acetate
• Propyl para-Hydroxybenzoate
• Propylene Glycol
• 3-Propylidenephthalide
• Prune Juice and Concentrate
• Pyridine
• Pyroligneous Acid And Extract
• Pyrrole
• Pyruvic Acid
• Raisin Juice Concentrate
• Rhodinol
• Rose Absolute and Oil
• Rosemary Oil
• Rum
• Rum Ether
• Rye Extract
• Sage, Sage Oil, and Sage
• Salicylaldehyde
• Sandalwood Oil, Yellow
• Sclareolide
• Skatole
• Smoke Flavor
• Snakeroot Oil
• Sodium Acetate
• Sodium Benzoate
• Sodium Bicarbonate
• Sodium Carbonate
• Sodium Chloride
• Sodium Citrate
• Sodium Hydroxide
• Solanone
• Spearmint Oil
• Styrax Extract, Gum and Oil
• Sucrose Octaacetate
• Sugar Alcohols
• Sugars
• Tagetes Oil
• Tannic Acid
• Tartaric Acid
• Tea Leaf and Absolute
• alpha-Terpineol
• Terpinolene
• Terpinyl Acetate
• 5,6,7,8-Tetrahydroquinoxaline
• 1,5,5,9-Tetramethyl-13-Oxatricyclo(,9))Tridecane
• 2,3,4,5, and 3,4,5,6-
• 2,3,5,6-Tetramethylpyrazine
• Thiamine Hydrochloride
• Thiazole
• 1-Threonine
• Thyme Oil, White and Red
• Thymol
• Tobacco Extracts
• Tochopherols (mixed)
• Tolu Balsam Gum and Extract
• Tolualdehydes
• para-Tolyl 3-Methylbutyrate
• para-Tolyl Acetaldehyde
• para-Tolyl Acetate
• para-Tolyl Isobutyrate
• para-Tolyl Phenylacetate
• Triacetin
• 2-Tridecanone
• 2-Tridecenal
• Triethyl Citrate
• 3,5,5-Trimethyl -1-Hexanol
• para,alpha,alpha-Trimethylbenzyl Alcohol
• 4-(2,6,6-Trimethylcyclohex-1-
• 2,6,6-Trimethylcyclohex-2-
• 2,6,6-Trimethylcyclohexa-1,
3-Dienyl Methan
• 4-(2,6,6-Trimethylcyclohexa-1,
• 2,2,6-Trimethylcyclohexanone
• 2,3,5-Trimethylpyrazine
• 1-Tyrosine
• delta-Undercalactone
• gamma-Undecalactone
• Undecanal
• 2-Undecanone, 1
• 0-Undecenal
• Urea
• Valencene
• Valeraldehyde
• Valerian Root Extract, Oil
and Powder
• Valeric Acid
• gamma-Valerolactone
• Valine
• Vanilla Extract And Oleoresin
• Vanillin
• Veratraldehyde
• Vetiver Oil
• Vinegar
• Violet Leaf Absolute
• Walnut Hull Extract
• Water
• Wheat Extract And Flour
• Wild Cherry Bark Extract
• Wine and Wine Sherry
• Xanthan Gum
• 3,4-Xylenol
• Yeast

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    • Vapor Zumo on June 2, 2018 at 2:33 am
    • Reply

    Yes, I have also searched for the chemicals on Tobacco and I came to know that Tobacco contains more dangerous chemicals than e-cigarettes. So, now I am pleased to believe that E-cigarettes are safer than Tobacco.
    And also e-cigarettes are better to smoke.

    • Ross on August 17, 2017 at 1:56 pm
    • Reply

    Excellent article Hillary, thank you. I have a friend who stopped vaping because of the pseudo-scientific claims, i will point him in the direction of this piece. I already had to convince him popcorn lung from vaping was a complete hoax.

    1. Thank you Ross! Much appreciated. We can only hope that the FDA chairman’s recent commitment to review more scientific papers regarding ecig safety will play out.

    • Roger Brulehotte on December 17, 2015 at 12:15 am
    • Reply

    And not a single word about Diacetyl, Acetoin and Acetyl Propionyl… Really?!

    1. Editor’s Note:
      This report has been updated with the latest news regarding Acetyl Propionyl and Acetoin.

    • Jerad on September 14, 2015 at 6:44 am
    • Reply

    Thank you hillary – we have little on our side as vapers because so much money is being lost. Greedy people run this world and if anything, it’s all about the money…

    1. Thanks Jerad. I do remain positive and believe the tides (and our judicial system) will turn to favor vapers who have a right to choose a cigarette alternative that truly satisfies and that is, as Public Health England recently announced, “about 95% safer than cigarettes”.

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