Description

(1R,2S)-1-Hydroxy-1,2,3-Propanetricarboxylic Acid Monopotassium Salt is a high-purity, chiral salt derivative of citric acid, valued for its specific stereochemistry and functional properties. This compound is critical for applications requiring precise molecular configuration and consistent buffering or chelating performance. It is primarily sought by manufacturers in the pharmaceutical, food & beverage, and specialty chemical industries for use as an intermediate, stabilizer, or acidity regulator.

Application

• Pharmaceutical Intermediate: Used in the synthesis of chiral active pharmaceutical ingredients (APIs) and as a buffering agent in parenteral formulations.
• Food Additive (Acidity Regulator & Stabilizer): Functions as a pH control agent and sequestrant in beverages, dairy products, and processed foods.
• Biochemical Research: Serves as a chiral ligand or a component in buffer systems for enzymatic studies and chromatography.
• Cosmetics & Personal Care: Acts as a pH adjuster and chelating agent in creams, lotions, and other skincare formulations.
• Industrial Chelating Agent: Utilized in cleaning formulations and water treatment processes to bind metal ions.
• Analytical Chemistry: Employed as a standard or reagent in various analytical methods.

Basic Information

Product Name	(1R,2S)-1-Hydroxy-1,2,3-Propanetricarboxylic Acid Monopotassium Salt
CAS No.	20226-99-7
Molecular Formula	C6H7KO7
Molecular Weight	230.21 g/mol
Synonyms	Monopotassium (1R,2S)-1-Hydroxy-1,2,3-propanetricarboxylate; Potassium Hydrogen (1R,2S)-1-Hydroxy-1,2,3-propanetricarboxylate; Chiral Potassium Hydrogen Citrate; (1R,2S)-1-Hydroxypropane-1,2,3-tricarboxylic Acid Monopotassium Salt; L-(+)-Potassium Hydrogen Citrate; Potassium Dihydrogen Citrate (chiral form); 2-Hydroxy-1,2,3-propanetricarboxylic Acid Monopotassium Salt, (1R,2S)-
EINECS	243-668-0

Quality Control

Our (1R,2S)-1-Hydroxy-1,2,3-Propanetricarboxylic Acid Monopotassium Salt is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We can supply material compliant with Food Chemical Codex (FCC) and pharmaceutical-grade standards. A detailed Certificate of Analysis (COA) is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Optical Rotation [α]20/D	+14.0° to +16.0° (c=1 in H2O)
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%
pH (5% solution)	3.0 - 4.0

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