Curiosity about the properties of propanol and what are the dangers to the human body?

The molecular formula of propanol is C3H8O. Propane.

A compound in which one hydrogen atom in a molecule is replaced by a hydroxyl group. Because the hydroxyl group can replace hydrogen at both ends of the carbon chain or in the middle of the carbon atom, two isomers can be formed. N-propanol is a colorless liquid with a melting point of -126

5, boiling point 974, the relative density is 08035(20/4℃)；Soluble in water, ethanol.

and ether ; It can form an azeotropic mixture with water, with a boiling point of 87 and a water content. Isopropanol.

It is a colorless liquid. Melting point 895, boiling point 824℃。Relative density (d204). Soluble in water, ethanol, ether, acetone.

etc., forming an azeotropic mixture with water, boiling point, water content 13%.

Propanol uses. Propanol is an important chemical product and raw material. It is mainly used as a dehydrating agent and cleaning agent in the pharmaceutical, cosmetic, plastic, spice, coating and electronic industries.

Reagents for the determination of barium, calcium, magnesium, nickel, potassium, sodium, and strontium. Chromatographic analysis of reference materials. For the electronics industry.

In many industrial and consumer products, isopropanol is used as a low-cost solvent and also as an extractant. According to the European Solvent Industries Group (ESIG), demand for intermediates in Europe accounted for 32 percent of isopropanol consumption in 2001, with 14 percent of isopropanol used as an anti-icing agent, 13 percent for paints and resins, 9 percent for pharmaceuticals, 4 percent for food and 3 percent for inks and adhesives.

Isopropyl alcohol is also used as a solvent for oils and colloids, as well as in the manufacture of fishmeal feed concentrates. Low-quality isopropyl alcohol is used in motor fuels. The use of isopropyl alcohol as a raw material for acetone production is decreasing. There are several compounds that are synthesized with isopropanol, such as methyl isobutyl ketone.

and many esters. Isopropyl alcohol of different qualities can be obtained depending on the end use**. The conventional mass of anhydrous isopropanol is above 99%, while the content of special-grade isopropanol is above (used in flavors and medicines). It is used to prepare acetone, diisopropyl ether and isopropyl acetate.

and thymol, among others. In many cases, it can be used in place of ethanol.

When propylene glycol is added to food and beverages, it carries the same risk of kidney disorders as ethylene glycol. As a result, some countries have banned their use in the food industry.

Recently, Xinjiang McQuor milk test failed, the unqualified item is propylene glycol, many people are not very clear about propylene glycol, so, what are the dangers of propylene glycol to the human body? What is the role of propylene glycol? I'll introduce you below.

What are the dangers of propylene glycol to the human body.

Propylene glycol was detected in McGuire milk, pure milk, produced in accordance with the national standard "GB 25190", the ingredients are only allowed to be pure milk, and no other ingredients other than pure milk are allowed. Therefore, propylene glycol in McGuire is definitely not qualified.

Propylene glycol is a low-toxicity additive, and long-term excessive consumption may cause kidney disorders. Some experts said that after a person eats propylene glycol, about 45% of it will be excreted from the body intact through the kidneys, and the rest will be metabolized into lactic acid in the body. If the amount is consumed in large quantities, the lactic acid produced cannot be excreted in time, and it will accumulate in the blood and kidneys, resulting in poisoning.

It mainly affects the nervous system, causing slowing of breathing, decreased heart rate, loss of consciousness, etc.

However, for people with normal liver and kidney function, propylene glycol is metabolized and excreted rapidly, and this degree of poisoning is almost unlikely. However, if there is liver or kidney dysfunction, the metabolism and excretion pathways of propylene glycol may be blocked, which may cause propylene glycol or lactate to accumulate, resulting in poisoning symptoms. He also said that a small number of people may be allergic to propylene glycol, and they should not be wary of propylene glycol.

Propylene glycol is commonly used in the preparation of pastries in food, and it is stipulated that it shall not exceed 3 grams of kilograms, and the safety standard for propylene glycol developed by the International Joint Expert Group on Food Additives is not more than 25 milligrams per kilogram of body weight per day.

According to experts, propylene glycol is a chemical solvent that is often used as a raw material for cosmetics because of its good miscibility with various fragrances. However, due to the low toxicity of propylene glycol, the concentration of propylene glycol in cosmetics is usually less than 5%.

What is the role of propylene glycol?

Propylene glycol is a food additive, its role is emulsification, stabilization, and a good solvent for condiments and pigments.

Propylene glycol is an organic compound, usually a slightly sweet, odorless, colorless, transparent oily liquid that absorbs moisture and mixes easily with water, acetone, and chloroform. It has good viscosity and hygroscopicity, and is widely used in the food, pharmaceutical and cosmetics industries.

In the food industry, propylene glycol is mainly used as a food emulsifier and is an excellent solvent for flavorings and pigments. In the pharmaceutical industry, propylene glycol is often used in the manufacture of various ointments, residues, ointments, solvents, softeners, etc. In addition, propylene glycol is also used as a solvent and softener in cosmetics.