Description

5-Keto-D-Gluconic Acid Calcium Salt is a key intermediate in the biochemical synthesis of ascorbic acid (Vitamin C) and other fine chemicals. This compound matters for its role in controlled oxidation processes and as a calcium source in specialized formulations. It is primarily needed by manufacturers in the pharmaceutical, nutraceutical, and food ingredient sectors, as well as by research institutions developing new biocatalytic pathways.

Application

• Vitamin C (Ascorbic Acid) Synthesis: A crucial biochemical precursor in the Reichstein-Grüssner and modern fermentation processes.
• Food & Beverage Industry: Used as a mineral source and acidity regulator in fortified products and specialized nutritional blends.
• Pharmaceutical Intermediates: Serves as a building block for the production of various pharmaceutical actives and chelating agents.
• Biochemical Research: Employed in enzymatic studies, metabolic pathway analysis, and as a substrate in microbiological media.
• Cosmetic & Personal Care: Functions as a skin-conditioning agent and stabilizer in certain formulations.
• Animal Nutrition: Incorporated into feed premixes as a source of bioavailable calcium and organic acid.

Basic Information

Product Name	5-Keto-D-Gluconic Acid Calcium Salt
CAS No.	22430-53-1
Molecular Formula	C12H18CaO14 • xH2O
Molecular Weight	426.35 (Anhydrous)
Synonyms	Calcium 5-Keto-D-gluconate; 5-Keto-D-gluconic acid calcium salt; 2,3,4,5-Tetrahydroxy-5-oxohexanoic acid calcium salt; 5-Oxo-D-gluconic acid calcium salt; Calcium 5-oxo-D-gluconate; 5-Ketogluconic acid calcium salt; D-Gluconic acid, 5-oxo-, calcium salt
EINECS	Contact for details

Quality Control

Our 5-Keto-D-Gluconic Acid Calcium Salt is produced under strict quality management systems. We offer grades suitable for food, pharmaceutical, and technical applications, with specifications tailored to customer requirements. All batches undergo rigorous analytical testing. Certificates of Analysis (COA) documenting purity, identity, and safety parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking and degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Calcium Content	8.5 - 10.5%
Water Content (KF)	≤ 5.0%
pH (5% solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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