Description

cis-Butenedioic Acid Monopotassium Salt is the monopotassium salt of maleic acid, a key intermediate and functional ingredient in various chemical syntheses. This compound is valued for its role as a buffering agent and its reactivity in organic transformations, particularly in polymer and pharmaceutical manufacturing. It is essential for industries requiring precise pH control or specific dicarboxylate chemistry, including specialty chemicals, food additives, and pharmaceutical intermediates.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other fine chemicals.
• Food Additive & Buffer: Functions as an acidity regulator and stabilizer in certain food processing applications.
• Polymer Industry: Serves as a monomer or co-monomer in the production of specialty resins and polymers.
• Chemical Synthesis: Acts as a building block for organic compounds, including agricultural chemicals and dyes.
• Laboratory Reagent: Employed in biochemical and analytical research as a standard or buffer component.
• Water Treatment: Used in formulations for scale and corrosion inhibition in industrial water systems.

Basic Information

Product Name	cis-Butenedioic Acid Monopotassium Salt
CAS No.	689-82-7
Molecular Formula	C4H3KO4
Molecular Weight	154.16 g/mol
Synonyms	Potassium Hydrogen Maleate; Maleic Acid Monopotassium Salt; Monopotassium Maleate; Potassium Acid Maleate; Potassium Maleate (1:1); Maleic Acid Potassium Salt; 2-Butenedioic Acid (2Z)-, Monopotassium Salt
EINECS	211-708-6

Quality Control

Our cis-Butenedioic Acid Monopotassium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your requirements.

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) 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%
Loss on Drying	≤ 2.0%
pH (5% Solution)	3.0 - 5.0
Heavy Metals (as Pb)	≤ 20 ppm

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