What is Dipropylene Glycol? What is propylene glycol

The difference between them is that propylene glycol has two hydroxyl groups, and the position of the hydroxyl group is at the position of the first carbon and the last carbon, which is generally called 1,3 propylene glycol. Whereas, glycerol has three hydroxyl groups that are distributed on each carbon molecule. What is a hydroxyl group: OH is a hydroxyl group.

Propylene glycol is a colorless viscous liquid, melting point -59, boiling point, relative density, refractive index, flash point 107, can be with water, acetone, propylene glycol viscosity and hygroscopicity, and non-toxic, so it is widely used in food, medicine and cosmetics industry.

Glycerol Glycerol is commonly known as "glycerol", the chemical formula is hoch2chohch2oh, colorless, odorless, and sweet viscous liquid. Boiling 290 degrees Celsius. Very absorbent.

It is a by-product of the soap industry, or made of propylene in petroleum pyrolysis gas. It is an important organic chemical raw material, which can be used to produce a variety of resins, and can also be used as solvents, hygroscopic agents, antifreeze agents, sweeteners, etc., textiles, anti-shrinkage treatment agents, diffusion agents, penetrants, lubricants, etc., used in the pharmaceutical industry for the production of certain drugs, used in the national defense industry for the production of explosives, and glycerol in papermaking, tanning, etc. There is no superiority or inferiority between the two, only the use of each other.

However, when buying paper towels, it is better to buy glycerol than propylene glycol, because from their nature, glycerol is easier to absorb water than propylene glycol. I have been working in chemistry for many years, but I came from a professional point of view.

Propylene glycol: Molecular formula: CH2OHCHOHCH3 (C3H8O2) is miscible with water, ethanol and a variety of organic solvents.

Propylene glycol can be used as a raw material for unsaturated polyester resins. It can be used as a wetting agent in cosmetics, toothpaste and soap in combination with glycerin or sorbitol. It is used in hair dye as a humidity regulating and evening agent, also used as an antifreeze, and is also used in cellophane, plasticizer and pharmaceutical industry.

Glycerol : Glycerin, also known as glycerol, is a colorless, odorless, sweet-tasting viscous liquid.

Glycerin is a sweetener and humectant commonly used in the food processing industry, mostly found in sports foods and milk replacers. In winter, people often apply glycerin to the surface of the air exposed to the air such as hands and face, which can keep the surface soft, elastic, dry without damage from dust and climate, and play a role in preventing frostbite. Because glycerin increases the amount of water in human tissues, it can increase the body's ability to exercise in high-heat environments.

Propanol: Molecular formula C3H8O. A compound in which one hydrogen atom in a propane molecule is replaced by a hydroxyl group.

It is generally used as a solvent. It can be used for coating solvents, printing inks, cosmetics, etc., for the production of pharmaceutical, pesticide intermediates n-propylamine, for the production of feed additives, synthetic spices, etc.

Propylene glycol and glycerol and propanol have different structures and both contain three carbons, which contain two one oh, three one oh, and one one oh respectively.

1,2-propanediol is a chemical reagent that is miscible with water, ethanol and a variety of organic solvents, and its chemical formula is C3H8O2. Under normal conditions, it is a colorless viscous liquid, almost tasteless, and slightly sweet to the smell. Propylene glycol is miscible with water, ethanol, ether, chloroform, acetone and other organic solvents.

Although the solubility of hydrocarbons, chlorinated hydrocarbons and oils is small, it has stronger solubility than ethylene glycol.

Propylene glycol is a flammable liquid. It is hygroscopic and does not corrode metal. It reacts with dibasic acids to form polyester, nitric acid to form nitrates, and hydrochloric acid to form chlorinated alcohols.

with dilute sulfuric acid at 170 heat to convert into propionaldehyde. Oxidation with nitric acid or chromic acid to produce glycolic acid, oxalic acid, acetic acid, etc. It reacts with aldehydes to form acetals.

Propylene glycol is dehydrated to produce propylene oxide or polyethylene glycol.

Propylene glycol mainly plays a role in hydrophilic, moisturizing, and promoting the penetration of active ingredients of cosmetics into the skin.

Propylene glycol has a certain viscosity and hygroscopic fatty alcohols, and propylene glycol is added to many cosmetics and ointments, mainly to play the role of hydrophilic and moisturizing, and to avoid excessive dryness.

Diol is a chemical agent, so it is necessary to go to the hospital for specialist consultation in time to avoid abuse.

Propylene glycol effects:

In the food industry, propylene glycol reacts with fatty acids to form propylene glycol fatty acid esters, which are mainly used as food emulsifiers; Propylene glycol is an excellent solvent for flavorings and pigments.

Propylene glycol is often used as a solvent, softener and excipient for the manufacture of various ointments and ointments in the pharmaceutical industry. Propylene glycol is also used as a tobacco humidifier, antifungal agent, lubricant for food processing equipment, and a solvent for food marking inks.

The above content reference: Encyclopedia-1,3-propanediol.

Dipropylene glycol can act as a moisturizer.

Dipropylene glycol is also known as dipropylene glycol.

The English name is dipropylene glycol, which is a odorless, colorless, sweet, water-soluble and hygroscopic liquid at room temperature. It is suitable for odor-sensitive applications such as flavors, fragrances and cosmetics, and is used as a coupling agent in a variety of different beauty and cosmetic applications.

and moisturizers. <>