Tartaric acid isomers and performance

Tartaric acid in the atom has two agee carbon atoms, so there are three types of optical isomers, ie D- or dextrorotatory tartaric acid tartaric acid, L-tartaric acid or L-tartaric acid, meso-tartaric acid. L-tartaric acid, racemic DL-tartaric acid adulterated with an according aggregate of D-tartaric acid or tartaric acid.

Natural tartaric acid D-tartaric acid. Automatic accumulation was the bigger racemic tartaric acid. D-tartaric acid is a achromatic cellophane bright or white credible powder, odorless, tastes complete sour, the about physique of 1.7598. Melting point 168 ~ 170 ℃. acid and abstract in chloroform acid in water, methanol, ethanol, ethyl ether.

DL-tartaric acid is a achromatic cellophane able crystal, no odor, complete acid, about physique of 1.697. Melting point 204 ~ 206 ℃, 210 ℃ decomposition. In admit and ethanol, ethyl ether-soluble and abstract in toluene. Tartaric acid constant in the air. Nontoxic.

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