Description

Formaldehyde Sodium Bisulfite is a key chemical adduct widely utilized for its sulfonating and reducing properties. This compound is essential for industries requiring precise control over chemical reactions, particularly in synthesis and stabilization processes. It serves as a critical intermediate and reagent for manufacturers in the pharmaceutical, textile, and water treatment sectors, where reliable quality and consistent performance are paramount.

Application

• Pharmaceutical Synthesis: Acts as a sulfonating agent and a reducing agent in the production of various active pharmaceutical ingredients (APIs) and intermediates.
• Textile Processing: Used in dyeing and printing processes as a discharge agent and for sulfur dye reduction to achieve consistent color results.
• Water Treatment: Employed as a dechlorinating agent to neutralize excess chlorine and chloramines in industrial wastewater and process water streams.
• Chemical Manufacturing: Serves as a versatile intermediate in organic synthesis for introducing sulfonate groups and as a stabilizer for sensitive aldehydes.
• Photography: Functions as a component in photographic developing solutions and as a silver solvent in photographic fixing baths.
• Leather Tanning: Utilized in the deliming and bating stages of leather production to improve softness and quality.

Basic Information

Product Name	Formaldehyde Sodium Bisulfite
CAS No.	870-72-4
Molecular Formula	CH3NaO4S
Molecular Weight	134.09 g/mol
Synonyms	Sodium Formaldehyde Bisulfite; Sodium Hydroxymethanesulfonate; Formaldehyde Sodium Sulfoxylate; Formalin Sulfoxylate; Sodium Formaldehyde Sulfoxylate; Hydroxymethanesulfonic Acid Sodium Salt; Methanesulfonic Acid, Hydroxy-, Sodium Salt; Formaldehyde Sodium Hydrogen Sulfite
EINECS	212-800-6

Quality Control

Our Formaldehyde Sodium Bisulfite is manufactured under a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot is tested against rigorous internal specifications, which typically include assay, identification, and impurity profile analysis. A Certificate of Analysis (COA) detailing all quality parameters is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product quality and performance. Recommended storage temperature is between 15°C and 25°C.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay	≥ 98.0 %
pH (10% solution)	4.0 - 6.0
Water Content	≤ 1.0 %
Heavy Metals (as Pb)	≤ 10 ppm

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