I think Deita is probably referring people worrying about VG and acrolein on the forum a while back. There was a lot of back and forth about it in the Health subforum, but in the end it always came back to VG being completely safe.
I'd include links but there are just too many threads to list. Just search "acrolein" in the health section.
For anyone worried about the safety of VG- Ecopure is VG based and they have done extensive testing. The have the lab results on their site and have discussed it's safety on the forums pretty extensively.
I would like to also add that there are many different glycerins.. some are based with volatile counterparts and a lot of folks base their concerns on information that doesn't pertain to the elements of glycerin used in our e-juice products. The glycerin here is based on sugars and not volatile chemicals. It is a food grade pharmaceutical and its potentials, as follows:
Extraction- Isolated glycerol fats through an Hydrolysis method
Shelf life- 5 years
Notes- Stores well under dark and cool conditions and is extremely volatile to light exposure.
This variety of Glycerine is suitable for food and cosmetic use and is USP standard 99.7% (the rest is water) with no added stabilizers, preservatives and other ingredients.
Specifications
Color- Clear
Odor/Taste- Flat aroma, very sweet flavor resembling syrup.
Glycerol content- 99.8%
Fatty Acids and Esters- 0.3
Specific Gravity- 1.29
pH- 7
Heavy Metals - <5 ppm
Chlorides- <10 ppm
Chlorinated compounds- <30 ppm
Sulphates- <20 ppm
Moisture- 0.13%
Organic Volatile Impurities- None detected
Diethylene Glycol and related compounds- No trace amounts detected
Vegetable Glyceine
Vegetable glycerine comes to us through a very complex and sophisticated method of extraction known as Hydrolysis, and the end product that we refer to as "Vegetable Glycerine" is usually the by-product of another oils production. The basics of this system is that the fats and oils of a raw ingredient (usually palm or coconut oils) are split into crude glycerol fats, under the combined action of water, temperature and pressure. These temperatures can exceed 400° degrees and the material is usually kept under pressure for 20-30 minutes. What is actually occurring is a sort of "counter-flow" where the water absorbs glycerol from the fatty acid phase of the oil production. After this phase this glycerol is isolated and further distilled to give buyers a standard 99% Glycerine product.
Vegetable Glycerine is a clear, colorless, and odorless liquid with an incredibly sweet taste having the consistency of thick syrup. It is used as an agent in cosmetics, toothpaste, shampoos, soaps, herbal remedies, pharmaceuticals, and other household items. Because it is soluble in both, water and alcohol, its versatility is a major benefactor in its purported growth and popularity within the manufacturing sector. It is invaluable as a natural source ingredient with emollient like properties which can soften and soothe the skin and it assists the outer epidermis is retaining moisture. This helps to explain why it is one of the most popular cosmetic additives used today.
Other uses include its solvency action which aides herbalists in extracting botanical properties from plant materials without the use of alcohol. This is especially helpful for those with alcohol sensitivities as most liquid herbal extracts contain alcohol. But given its severely limited shelf life, extracts made from Vegetable Glycerine typically have a shelf life of 14-24 months whereas alcohol extracts can have an extended shelf life of 4-6 years.
Food grade glycerin is just the same as comparable to a corn syrup with properties that are designed to extract the flavorings of biological products.
Glycerol is used in
medical and
pharmaceutical and
personal care preparations, mainly as a means of improving smoothness, providing
lubrication and as a
humectant. It is found in
cough syrups, elixirs and
expectorants,
toothpaste,
mouthwashes,
skin care products, shaving cream,
hair care products,
soaps and water based
personal lubricants. In solid dosage forms like tablets, Glycerol is used as a tablet holding agent. It is also an ingredient in cigarettes that is used as a humectant. For human consumption, glycerol is classified by the U.S. FDA among the
sugar alcohols as a caloric macronutrient.
As a 10% solution, glycerol prevents tannins from precipitating in ethanol extracts of plants (
tinctures). It is also used as a substitute for ethanol as a solvent in preparing herbal extractions. It is less extractive and is approximately 30% less able to be absorbed by the body.
Fluid extract manufacturers often extract herbs in hot water before adding glycerin to make
glycerites.
[4][5][6]
Used as a
laxative when introduced into the rectum in
suppository or small-volume (2to10ml)(
enema) form; irritates the .... mucosa and induces a
hyperosmotic effect.
Glycerol is a component of glycerol
soap, which is made from
denatured alcohol, glycerol, sodium castorate (from
castor),
sodium cocoate,
sodium tallowate,
sucrose, and water. Sometimes one adds
sodium laureth sulfate, or
essential oils for
fragrance. This kind of soap is used by people with sensitive, easily-irritated
skin because it prevents skin dryness with its
moisturizing properties. It draws moisture up through skin layers and slows or prevents excessive drying and evaporation. It is possible to make glycerol soap at home.
Topical pure or nearly pure glycerol is an effective treatment for psoriasis, burns, bites, cuts, rashes, bedsores, and calluses.[Needs footnote.]
It can be used orally to eliminate halitosis, as it is a contact bacterial desiccant.[Needs footnote.] The same property makes it very helpful with periodontal disease; it penetrates biofilm quickly and eliminates bacterial colonies.[Needs footnote
On May 4, 2007, the US
Food and Drug Administration advised all US makers of medicines to test all batches of glycerine for the toxic
diethylene glycol.
[14] This follows an occurrence of 100 fatal poisonings in
Panama resulting from a Chinese factory deliberately falsifying records in order to export the cheaper diethylene glycol as the more expensive glycerol.
[15] Glycerine and diethylene glycol are similar in appearance, smell, and taste. The US
Federal Food, Drug, and Cosmetic Act was passed following the 1937 "
Elixir Sulfanilamide" incident of poisoning caused by diethylene glycol contamination of medicine.
As per wickpedia, or however it is spelled...LOL