гидрокорды қышқыл

A compound present in all grapes which is also an essential component of wine to preserve, enliven and shape its flavors and to help prolong its aftertaste. There are four major ...

қышқыл

음료; 와인

Sharp-tasting because of acidity. Occasionally used as a synonym for acidic.

қышқыл

사진; 전문 사진

chemical substance with a pH value below 7.

абиетин қышқылы

화학; 유기 화학물질

C 20 H 30 O 2 A tricyclic, crystalline acid obtained from rosin; used in making esters for plasticizers.

альфин катализаторы

화학; 유기 화학물질

A catalyst derived from reaction of an alkali alcoholate with an olefin halide; used to convert olefins (for example, ethylene, propylene, or butylenes) into polyolefin polymers.

бензотиазоль

화학; 유기 화학물질

C 6 H 4 SCHN A thiazole fused to a benzene ring; can be made by ring closure from o-amino thiophenols and acid chlorides; derivatives are important industrial products.

целлюлозалық

화학; 유기 화학물질

Any of the derivatives of cellulose, such as cellulose acetate.

3,5-диаминобензоқышқыл

화학; 유기 화학물질

C 7 H 8 N 2 O 2 Monohydrate crystals with a melting point of 228_C; soluble in organic solvents such as alcohol and benzene; used in the detection and determination of nitrites.

аланил

화학; 유기 화학물질

The radical CH 3 CHNH 2 CO_; occurs in, for example, alanyl alanine, a dipeptide.

뉴스 속의 용어

Рождестволық көпіршік

The giant intergalactic bubble of gas floating in space. It's the remnant of a massive star explosion, or supernova, in the Large Magellanic Cloud ...