Potassium Malate
Potassium Malate (C₄H₅KO₅, CAS No.: 5877-95-6 / 17482-42-7) is the potassium salt of L-malic acid, engineered as a high-purity buffering agent, pH regulator, and mineral fortifier. Synthesized via stoichiometric neutralization of high-purity L-malic acid with potassium hydroxide under closed-loop temperature control, it dissolves readily in water to form a clear, odorless solution.
It functions as a clean-taste, low-sodium alternative to sodium-based salts, eliminating metallic aftertastes in functional beverages and dietary formulations. Multi-stage filtration and automated crystallization ensure strictly controlled heavy metal profiles and consistent batch-to-batch assays for industrial, pharmaceutical, and food-processing applications.
Key Specifications
|
Parameter |
Food Grade (Powder) |
Technical / Liquid Grade |
Test Method |
|
Appearance |
White crystalline powder |
Clear, colorless liquid |
Visual |
|
Assay (C₄H₅KO₅) |
≥ 99.0% |
50.0% - 60.0% (Concentration) |
Titration / HPLC |
|
Loss on Drying |
≤ 1.0% (105°C, 4h) |
N/A (Solution) |
Gravimetric |
|
pH (5% aqueous solution) |
6.5 - 8.5 |
6.0 - 8.0 |
Potentiometry |
|
Heavy Metals (as Pb) |
≤ 10 ppm |
≤ 10 ppm |
ICP-MS |
|
Lead (Pb) |
≤ 2 ppm |
≤ 2 ppm |
ICP-MS |
|
Arsenic (As) |
≤ 1 ppm |
≤ 1 ppm |
ICP-MS |
Applications
Beverages & Sports Drinks: Acts as a potassium fortifier and pH buffer in enhanced waters, electrolyte drinks, and functional juices.
Nutritional Supplements: Utilized in tablets, capsules, and powder blends for electrolyte replenishment and mineral enrichment without sodium load.
Food Processing: Functions as an acidity regulator and flavor modulator in dairy products, baked goods, and processed formulations.
Pharmaceuticals: Deployed as an excipient or active ingredient precursor in liquid formulations and syrup buffering systems.
Product Grades & Options
Food Grade (FCC / USP Compliant): Produced in dedicated clean-controlled reaction lines meeting Food Chemical Codex and United States Pharmacopeia standards for direct human consumption and dietary supplements.
Industrial / Technical Grade: Optimized for chemical synthesis, metal surface treatment, and specialized industrial buffering.
Custom Formulations: Available in anhydrous and hydrated crystal forms, as well as customized liquid concentrations (50% to 60% aqueous solutions) tailored to specific reactor or blending requirements.
Quality Control & Documentation
Manufacturing operates under ISO 9001 and HACCP frameworks, integrating automated reactor monitoring and closed-system filtration to eliminate environmental contamination risks.
Batch Testing: Every production lot is analyzed via high-performance liquid chromatography (HPLC) and atomic absorption spectroscopy (AAS) to verify assay thresholds and impurity limits prior to release.
Traceability: Raw material lots, reaction parameters, and packaging timestamps are logged digitally, ensuring complete backward traceability.
Regulatory Compliance & Documentation: Each shipment includes a batch-specific Certificate of Analysis (COA). Technical Data Sheets (TDS), Safety Data Sheets (SDS), Kosher, and Halal certificates are available upon request.
Packaging & Storage
Standard Packaging:
Powder: 25 kg fiber drums equipped with dual-layer food-grade polyethylene liners.
Liquid: 250 kg HDPE drums or 1000 kg IBC totes.
Storage Conditions: Store in a cool, dry, well-ventilated area away from direct sunlight and moisture sources. Keep containers tightly sealed to prevent hygroscopic caking.
Shelf Life: 24 months from the manufacture date in unopened original packaging.
FAQ
Q: What is the primary difference between Potassium Malate and Potassium Citrate in beverage formulations?
A: Potassium Malate provides a fruit-derived, tart acid profile well-suited for fruit-flavored beverages. Potassium Citrate offers a more neutral taste profile. Malate also exhibits higher solubility in specific low-pH systems.
Q: Is your Potassium Malate manufactured synthetically or derived from natural sources?
A: It is produced via catalytic synthesis using high-purity L-malic acid and potassium hydroxide feedstock, yielding an identical molecular structure with consistent high purity (>99.0%).
Q: Does the powder grade exhibit caking tendencies during storage?
A: Potassium Malate powder is moderately hygroscopic. It is packed with dual-layer PE liners inside sealed fiber drums. Maintaining storage relative humidity below 60% effectively prevents caking.
Q: Can you provide customized particle size distribution (PSD) for direct compression tableting?
A: Yes. We offer customized mechanical milling and sifting options for solid-dose nutraceutical manufacturers requiring specific flowability and particle size profiles.
Q: What minimum order quantity (MOQ) applies for custom liquid concentrations?
A: Standard liquid grade MOQ is one 1000 kg IBC tote. Custom concentration runs require a minimum batch volume of 3000 kg.
Q: What shipping documents accompany international export orders?
A: Shipments include the Commercial Invoice, Packing List, Bill of Lading, Certificate of Analysis (COA), and Certificate of Origin (Form E, CO, etc., depending on destination requirements).
Request a Quote & Sample
To receive current bulk pricing, lead times, or request a 500 g sample for laboratory evaluation, please submit your technical requirements:
Required Specifications: Grade, Target Volume (Annual/Per Shipment), Destination Port, and Application Type.
Response Commitment: Technical sales and engineering teams reply within 24 business hours with formal quotations, TDS, and COA samples.
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