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

Napoje; Wino

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

қышқыл

Fotografia; Profesjonalna fotografia

chemical substance with a pH value below 7.

абиетин қышқылы

Chemia; Chemia organiczna

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

альфин катализаторы

Chemia; Chemia organiczna

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

Chemia; Chemia organiczna

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

Chemia; Chemia organiczna

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

3,5-диаминобензоқышқыл

Chemia; Chemia organiczna

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.