Description

4-(4-Sulfophenoxy)Butyric Acid Monosodium Salt is a high-purity, functionalized aromatic sulfonate salt with significant utility in advanced chemical synthesis. This compound matters for its role as a versatile intermediate and surfactant precursor, offering both water solubility from the sulfonate group and a reactive carboxylic acid moiety. Industrial users in the pharmaceutical, agrochemical, and specialty polymer sectors require it for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Used in the synthesis of novel drug candidates, particularly those requiring sulfonate groups for enhanced solubility or biological activity.
• Agrochemical Synthesis: Serves as a key building block for creating modern herbicides, fungicides, and plant growth regulators with improved systemic properties.
• Polymer Modification: Acts as a monomer or functional additive to introduce anionic character and hydrophilicity into specialty polymers and coatings.
• Surfactant & Detergent Industry: Employed as a precursor for manufacturing high-performance anionic surfactants and emulsifiers.
• Dye & Pigment Manufacturing: Functions as a solubilizing agent and intermediate in the production of water-soluble dyes and organic pigments.
• Research & Development: A valuable reagent for academic and industrial R&D in organic chemistry and material science.

Basic Information

Product Name	4-(4-Sulfophenoxy)Butyric Acid Monosodium Salt
CAS No.	63133-93-7
Molecular Formula	C10H11NaO6S
Molecular Weight	282.24 g/mol
Synonyms	Monosodium 4-(4-sulfophenoxy)butyrate; Sodium 4-(4-sulfophenoxy)butanoate; 4-(p-Sulfophenoxy)butyric Acid Sodium Salt; SPB Sodium Salt; Butyric acid, 4-(4-sulfophenoxy)-, monosodium salt; Benzenesulfonic acid, 4-(3-carboxypropoxy)-, sodium salt (1:1)
EINECS	Contact for details

Quality Control

Every batch of our 4-(4-Sulfophenoxy)Butyric Acid Monosodium Salt is manufactured under a strict quality management system. We employ advanced analytical techniques including HPLC, NMR, and titration to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specification parameters is provided with each shipment to guarantee it meets your precise application requirements.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%
pH (5% solution)	6.0 - 8.0

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