Description

L-Hydroxybutanedioic Acid Disodium Salt is the disodium salt form of L-malic acid, a key organic acid widely utilized in the food and pharmaceutical industries. This high-purity compound serves as a critical buffering agent, acidity regulator, and flavor enhancer, offering superior stability and solubility in aqueous systems. It is an essential ingredient for manufacturers in the food & beverage, nutraceutical, and personal care sectors seeking reliable, consistent, and compliant raw materials for their formulations.

Application

• Food & Beverage Industry: Primarily used as an acidity regulator, flavor enhancer, and buffering agent in beverages (soft drinks, fruit juices), confectionery, jams, and dairy products to impart a smooth, tart taste.
• Pharmaceuticals & Nutraceuticals: Employed as an excipient in tablet and capsule formulations for its buffering properties and as a component in effervescent products and electrolyte solutions.
• Personal Care & Cosmetics: Functions as a pH adjuster and skin conditioning agent in creams, lotions, and other cosmetic formulations.
• Industrial Applications: Acts as a chelating agent and intermediate in various chemical synthesis processes and specialty cleaning formulations.
• Biochemical Research: Used as a substrate or buffer component in enzymatic studies and microbiological culture media.

Basic Information

Product Name	L-Hydroxybutanedioic Acid Disodium Salt
CAS No.	138-09-0
Molecular Formula	C4H4Na2O5
Molecular Weight	178.05 g/mol
Synonyms	Disodium L-Malate; L-Malic Acid Disodium Salt; Sodium L-Malate; (S)-Hydroxybutanedioic Acid Disodium Salt; Disodium (S)-Malate; Butanedioic acid, hydroxy-, disodium salt, (2S)-; E350
EINECS	205-309-9

Quality Control

Our L-Hydroxybutanedioic Acid Disodium Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets the high standards required for food and pharmaceutical applications, including specifications for identity, purity, and heavy metal content. Certificates of Analysis (COA) are provided with every shipment, and we can support compliance with relevant standards such as FCC (Food Chemicals Codex) and USP (United States Pharmacopeia) upon request.

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); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can lead to caking or degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Specific Rotation [α]20/D	+26.0° to +30.0° (c=5 in H2O)
pH (5% solution)	6.5 - 8.0
Water (Karl Fischer)	≤ 3.0%
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.