Description

(+)-Diacetyl-D-Tartaric Acid CAS NO 66749-60-8 is a high-purity, chiral organic acid derivative, serving as a critical intermediate and resolving agent in advanced chemical synthesis. Its primary value lies in its ability to impart optical activity and act as a versatile building block for pharmaceuticals and fine chemicals. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require enantiomerically pure intermediates for active pharmaceutical ingredients (APIs) and chiral catalysts.

Application

• Pharmaceutical Intermediate: Key chiral building block for the synthesis of enantiomerically pure drugs and active pharmaceutical ingredients (APIs).
• Chiral Resolution Agent: Used to separate racemic mixtures of amines, amino acids, and other chiral compounds.
• Asymmetric Synthesis Catalyst: Employed as a ligand or precursor in metal-catalyzed asymmetric reactions.
• Food Additive Precursor: Intermediate in the production of certain food-grade emulsifiers and acidulants.
• Agrochemical Synthesis: Used in the manufacture of chiral pesticides and herbicides.
• Polymer Modification: Acts as a monomer or cross-linking agent for specialty polymers with specific optical properties.
• Analytical Chemistry: Serves as a standard or derivatization agent in chromatographic methods for chiral analysis.

Basic Information

Product Name	(+)-Diacetyl-D-Tartaric Acid
CAS No.	66749-60-8
Molecular Formula	C8H10O8
Molecular Weight	234.16 g/mol
Synonyms	(+)-Diacetyl-D-tartaric Anhydride; (2R,3R)-2,3-Diacetoxybutanedioic Acid; DAT; D-DAT; D-(-)-Diacetyl Tartaric Acid; (R,R)-Diacetyl Tartaric Acid; Anhydride of D-(-)-Diacetyl Tartaric Acid; EINECS 266-463-6
EINECS	266-463-6

Quality Control

Our (+)-Diacetyl-D-Tartaric Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including chiral purity (enantiomeric excess) and chemical assay, to ensure it meets the high standards required for pharmaceutical and fine chemical applications. Certificates of Analysis (COA) detailing purity, specific rotation, and impurity profiles are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Enantiomeric Purity (Chiral HPLC)	≥ 99.0% ee
Specific Rotation [α]20/D	-135° to -145° (c=1 in water)
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.