Description

Methyl 4-Hydroxybenzoate Potassium is the potassium salt of methylparaben, a widely utilized synthetic preservative. This compound is valued for its effective antimicrobial properties against a broad spectrum of molds, yeasts, and some bacteria, ensuring product stability and shelf-life extension. It is a critical ingredient for manufacturers in the pharmaceutical, personal care, and food industries seeking reliable, water-soluble preservation solutions. Its consistent quality and efficacy make it a preferred choice for formulators requiring a safe and compliant preservative agent.

Application

Methyl 4-Hydroxybenzoate Potassium serves as a versatile preservative across multiple sectors due to its solubility and efficacy. Key application areas include:

• Pharmaceutical Formulations: Used as a preservative in liquid dosage forms such as syrups, oral suspensions, and topical solutions to prevent microbial contamination.
• Cosmetics & Personal Care: Incorporated into creams, lotions, shampoos, and other aqueous-based products to inhibit spoilage and ensure consumer safety.
• Food & Beverage Industry: Employed as a food additive (E number E218) to preserve certain processed foods, sauces, and non-carbonated soft drinks.
• Industrial Applications: Acts as a biocide in various industrial fluids, adhesives, and aqueous functional products where microbial growth is a concern.

Basic Information

Product Name	Methyl 4-Hydroxybenzoate Potassium
CAS No.	26112-07-2
Molecular Formula	C8H7KO3
Molecular Weight	190.24 g/mol
Synonyms	Potassium Methylparaben; Methyl Paraben Potassium Salt; Methyl 4-Hydroxybenzoate Potassium Salt; Potassium 4-(Methoxycarbonyl)phenolate; Methyl Paraben K; Nipagin M Potassium; Preservative E218; Tegosept K
EINECS	247-464-1

Quality Control

Our Methyl 4-Hydroxybenzoate Potassium 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. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, identification, and impurity profiles. Specifications can be aligned with relevant pharmacopoeial standards (such as USP/NF, EP, or JP) upon request to meet specific regulatory 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). The 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% - 102.0% (on dried basis)
Loss on Drying	≤ 5.0%
pH (5% Solution)	9.0 - 10.5
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 1.0%

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