Description

L-Malic Acid Dipotassium is the dipotassium salt of L-malic acid, a naturally occurring organic acid. This high-purity salt is valued for its superior buffering capacity and solubility profile compared to the free acid, making it a versatile functional ingredient. It serves as a critical component for pharmaceutical formulations, food & beverage systems, and advanced cosmetic products requiring precise pH control and enhanced stability.

Application

• Pharmaceutical Buffering Agent: Used in injectable solutions, oral liquids, and tablet formulations to maintain precise pH for drug stability and efficacy.
• Food & Beverage Additive: Functions as an acidity regulator, flavor enhancer, and preservative in beverages, confectionery, and low-sodium food products.
• Cosmetic & Personal Care: Acts as a pH adjuster and humectant in skin care serums, lotions, and hair care products for improved texture and mildness.
• Biochemical Research & Cell Culture: Employed in the preparation of biological buffers for enzymatic assays and cell culture media.
• Industrial Chelating Agent: Utilized in cleaning formulations and water treatment processes for its metal-sequestering properties.

Basic Information

Product Name	L-Malic Acid Dipotassium
CAS No.	54944-41-1
Molecular Formula	C4H4K2O5
Molecular Weight	210.27 g/mol
Synonyms	Dipotassium L-malate; Potassium L-malate; Dipotassium (2S)-2-hydroxybutanedioate; L-Malic acid potassium salt; Malic acid, dipotassium salt, L-; Butanedioic acid, hydroxy-, dipotassium salt, (2S)-; EINECS 259-443-7
EINECS	259-443-7

Quality Control

Our L-Malic Acid Dipotassium is manufactured under a strict quality management system. Each batch is tested to ensure it meets high-purity standards suitable for pharmaceutical and food-grade applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your specifications.

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); the container must be kept 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%
Specific Rotation [α]20/D	-25.0° to -28.0°
pH (5% solution)	6.5 - 8.5
Loss on Drying	≤ 2.0%
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.