Description

Formaldehyde Bisulfite is a versatile chemical adduct formed from formaldehyde and sodium bisulfite, widely recognized as a stable source of formaldehyde in aqueous solution. This compound is crucial for industries requiring controlled, safe, and efficient delivery of formaldehyde without the handling challenges of the gaseous form. It serves as a key intermediate and reagent in the synthesis of pharmaceuticals, agrochemicals, and specialty chemicals, as well as in various industrial processes.

Application

• Pharmaceutical Synthesis: Acts as a key reagent and formaldehyde donor in the production of various active pharmaceutical ingredients (APIs) and intermediates.
• Agrochemical Manufacturing: Used in the synthesis of herbicides, fungicides, and other crop protection agents.
• Chemical Intermediate: Serves as a vital building block in organic synthesis for dyes, resins, and other specialty chemicals.
• Leather Tanning: Employed as a tanning agent and preservative in the leather processing industry.
• Textile Treatment: Used in anti-crease and durable press finishing processes for fabrics.
• Biocide & Disinfectant Formulations: Functions as a stabilizing component in formulations that release formaldehyde for antimicrobial action.
• Laboratory Reagent: Utilized in analytical chemistry and research as a standardized source of formaldehyde.
• Water Treatment: Applied in certain industrial water systems for microbial control.

Basic Information

Product Name	Formaldehyde Bisulfite
CAS No.	75-92-3
Molecular Formula	CH3NaO4S
Molecular Weight	134.09 g/mol
Synonyms	Sodium Hydroxymethanesulfonate; Formaldehyde Sodium Bisulfite; Sodium Formaldehyde Sulfoxylate; Formaldehyde Sodium Sulfoxylate; Hydroxymethanesulfonic Acid Sodium Salt; Methanesulfonic Acid, Hydroxy-, Sodium Salt; Rongalite (related compound); Formosul; Contact for additional synonyms.
EINECS	200-916-7

Quality Control

Our Formaldehyde Bisulfite is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing key parameters such as assay, impurity profile, and physical properties. Our quality commitment supports applications requiring high standards, including pharmaceutical and agrochemical synthesis.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
pH (Solution)	Contact for details
Water Content	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	Contact for details

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