Adipic acid

Adipic acid (hexandiol acid) HOOC(CH2)4СООН — limiting dibasic carboxylic acid. Has all the chemical properties characteristic of carboxylic acids. Adipic acid is an organic acid which is one of the most important synthetic dicarboxylic acids.

Is a colorless crystalline powder with monoclinic crystals.

Forms salts, most of which are soluble in water.

Easy tarifitsiruetsya in the mono - and diesters. With the glycol forms polyesters. Salts of adipic acid — adipinate.

Adipic acid is obtained by oxidation of cyclohexane passing in two stages. Also the drug is produced by the interaction of cyclohexane with nitric acid or ozone. One of the promising methods of obtaining is gidrogenizirovanii butadiene. The world produces 2.5 million tons / year adipic acid.

Adipic acid is used in various fields of human activity. It is the main raw material in the production of polyhexamethylenediamine and its esters and polyurethanes. In addition, adipic acid is used as plasticizer in production of plastics, used in printing industry for the production of high quality paper, used in pharmaceuticals and for the production of diesters and dyes.

In the food industry adipic acid is used in dietary Supplement, the amplifier sour taste – Е355. Most often it is used for the production of soft drinks. Of course, adipic acid as the acidifier is often inferior to, for example, citric acid, however, in gelatinous products, it's better to use it in connection with its ability to enhance the formation of jelly. Therefore, the use of adipic acid for the production of jellies, jams, and gelatine desserts helps to reduce the consumption of gelatin and other protein ingredients.

Adipic acid is used as a mild acidifier with a low hygroscopicity and sour taste long-lasting, such as in chewing gum up to 3%; in desserts to 0.6%; in baking mixes to 0.4%; dry mixes for beverages up to 1% (in terms of ready-to-eat product).

The acceptable daily intake of 5 mg/kg of body weight per day based on adipat-ion. MPC in water 2.0 mg/l hazard class 3.

Е355 permitted in flavoured desserts dry up to 1 g/kg of product; in powdered mixes for making beverages in the home in an amount up to 10 g/kg; in toppings, finishing foods for rich bakery products and flour confectionery products, etc. in amounts up to 2 g/kg individually or in combination with other adipate in terms of acid.

Adipic acid belongs to 3rd class of hazard. Low-toxic, - flammable, explosive dust. Eating it with food is permissible in normal doses, that, in fact, refers to any chemical additives to food. Excessive dosing may have a negative impact on the human body.

The main advantage of adipic acid to other acids (hydrochloric, acetic, etc.) is allowed to transport in bags using any kind of transport. Transportation other acids are only allowed in bulk in special tanks, which significantly increases logistics costs and the cost of the final product.

Adipic acid Packed in polyethylene bags liners, nested in four-layer impregnated paper bags or brand NM black PM. The layer of polyethylene laminated paper sack shall be in contact with air.
Transporterowych indoor rail, water and road transport in accordance with goods transportation regulations applied to this type of transport. Stored in dry covered warehouses at temperatures not above 50° C.