Description

Sodium Formaldehydesulfoxylate Dihydrate is a versatile and powerful reducing agent widely used in industrial chemical processes. Its primary value lies in its ability to efficiently donate electrons, making it essential for applications requiring controlled reduction or bleaching. This compound is particularly critical for manufacturers in the textile, polymer, and paper industries who require a reliable and effective source of sulfoxylate ions. The product is supplied as the dihydrate form, which offers improved handling characteristics compared to anhydrous variants.

Application

• Textile Processing: Acts as a key reducing agent in vat dyeing and printing processes for cotton and other cellulosic fibers.
• Polymer Industry: Used as a redox initiator and catalyst in emulsion polymerization for synthetic rubbers (e.g., SBR, NBR) and plastics.
• Pulp & Paper Bleaching: Employed in the bleaching of mechanical and chemical pulps to achieve high brightness levels.
• Chemical Synthesis: Serves as a selective reducing agent in organic synthesis and pharmaceutical intermediate manufacturing.
• Water Treatment: Utilized for the reduction and removal of heavy metals and chlorine from industrial wastewater.
• Photography: Functions as a developing agent in certain photographic and radiographic film processing solutions.

Basic Information

Product Name	Sodium Formaldehydesulfoxylate Dihydrate
CAS No.	6035-47-8
Molecular Formula	CH3NaO4S • 2H2O
Molecular Weight	154.11 g/mol
Synonyms	Sodium Hydroxymethanesulfinate Dihydrate; Formamidinesulfinic Acid Sodium Salt Dihydrate; Rongalite; Sodium Sulfoxylate Formaldehyde; Bruggolite; Decrolin; Hydrolin; Sodium Formaldehyde Sulfoxylate
EINECS	227- 936- 4

Quality Control

Our Sodium Formaldehydesulfoxylate Dihydrate is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Production adheres to relevant industrial standards, and each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, moisture content, and heavy metal limits. We are committed to meeting the specific quality requirements of our global B2B clients, from industrial to more demanding technical grades.

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) and easily oxidized; therefore, containers must be kept tightly sealed after each use to minimize exposure to air and atmospheric moisture. For long-term storage, consider using an inert atmosphere (e.g., nitrogen) in the headspace of partially used containers.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
pH (10% Solution)	9.0 - 11.0
Water Content (KF)	20.0 - 24.0 %
Iron (Fe)	≤ 10 ppm
Heavy Metals (as Pb)	≤ 20 ppm

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