DL-Tartaric Acid

Product Overview

DL-Tartaric Acid (also called racemic tartaric acid) — CAS 133-37-9 — is a colorless to white crystalline powder with a sour taste and mild grape/lemon aroma. The DL (racemic) form is widely used where tartaric functionality (acidulant, chelator, buffering) is required but optical activity is not. DL-Tartaric Acid is stable, non-hygroscopic and easily soluble in water, making it a versatile raw material for formulations.

DL-tartaric acid is colorless and transparent prismatic crystals, or white fine to coarse crystalline powder. There is a grape and white lemon-like aroma. It tastes sour. Stable in air. Non-hygroscopic. The acidity is about 1.2 to 1.3 times that of citric acid. Easily soluble in water, insoluble in chloroform.

Typical Specifications

Melting point	210-212 °C(lit.)
alpha	[α]D20 -0.2～+0.2° (c=20, H2O)
Boiling point	191.59°C (rough estimate)
density	1.788
vapor pressure	<0.1 hPa (20 °C)
refractive index	1.5860 (estimate)
FEMA	3044 | TARTARIC ACID (D-, L-, DL-, MESO-)
Fp	210 °C
storage temp.	Store below +30°C.
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