Description

Sodium 4-Hydroxybenzoate is the sodium salt of 4-hydroxybenzoic acid, a versatile and widely used chemical intermediate. This compound is valued for its excellent preservative properties and solubility in aqueous systems, making it a critical component in formulations requiring microbial stability. Key industries that rely on this product include pharmaceuticals, cosmetics, and food processing, where it serves as an effective antimicrobial agent.

Application

• As a preservative in pharmaceutical formulations, including syrups, ointments, and topical solutions.
• An antimicrobial agent in cosmetic and personal care products such as creams, lotions, and shampoos.
• A food-grade preservative (E219) in certain beverages, jams, and processed foods.
• An intermediate in the synthesis of other parabens and specialty organic compounds.
• Used in industrial applications as a corrosion inhibitor or stabilizer in functional fluids.
• A component in adhesive and coating formulations to prevent spoilage.

Basic Information

Product Name	Sodium 4-Hydroxybenzoate
CAS No.	114-63-6
Molecular Formula	C7H5NaO3
Molecular Weight	160.10 g/mol
Synonyms	Sodium Paraben; Sodium p-Hydroxybenzoate; 4-Hydroxybenzoic Acid Sodium Salt; Sobenate; Nipagin Sodium; E219; p-Hydroxybenzoic Acid Sodium Salt; Sodium 4-Hydroxybenzenecarboxylate
EINECS	204-049-7

Quality Control

Our Sodium 4-Hydroxybenzoate is manufactured under a strict quality management system. Production adheres to current Good Manufacturing Practices (cGMP) and is supported by a comprehensive analytical control strategy. We provide Certificates of Analysis (COA) for every batch, detailing purity, identity, and impurity profiles to ensure compliance with pharmaceutical (USP/EP), food (FCC), and industrial specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, 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%
pH (5% Solution)	8.0 - 10.0
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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