Description

Hydroxymethylbenzenesulphonic Acid is a versatile aromatic sulfonic acid derivative, valued for its dual functionality as both an acid catalyst and a reactive intermediate in organic synthesis. Its significance lies in its ability to introduce both sulfonic acid and hydroxymethyl groups, enabling applications in polymer modification, resin curing, and specialty chemical manufacturing. This compound is essential for industries such as polymer production, fine chemical synthesis, and material science, where precise chemical functionality is required.

Application

• As a curing agent or cross-linking catalyst in thermosetting resins, such as phenolic and epoxy resins.
• As a key intermediate in the synthesis of specialty surfactants and detergents.
• In the production of ion-exchange resins and functional polymers.
• As an acid catalyst in organic synthesis and esterification reactions.
• For the modification of dyes and pigments to improve solubility or affinity.
• In research and development for creating novel pharmaceutical intermediates.

Basic Information

Product Name	Hydroxymethylbenzenesulphonic Acid
CAS No.	50851-56-4
Molecular Formula	C7H8O4S
Molecular Weight	188.20 g/mol
Synonyms	Hydroxymethylbenzenesulfonic Acid; (Hydroxymethyl)benzenesulfonic Acid; Benzenesulfonic acid, (hydroxymethyl)-; α-Hydroxytoluenesulfonic Acid; Benzyl alcohol, o-sulfonic acid; 1-Hydroxymethylbenzene-4-sulfonic Acid; p-Hydroxymethylbenzenesulfonic Acid; Benzenesulfonic acid, hydroxymethyl-
EINECS	Contact for details

Quality Control

Our Hydroxymethylbenzenesulphonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your technical 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Melting Point	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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