Description

Potassium Sodium Sulfite is an inorganic salt compound with significant utility as a reducing agent and preservative. Its chemical properties make it a valuable component for controlling oxidation and microbial growth in various industrial processes. This product is essential for manufacturers in sectors requiring reliable chemical intermediates and additives, particularly in water treatment, photography, and textile processing. We supply high-purity grades to meet the stringent demands of global industrial applications.

Application

• Water Treatment: Acts as an oxygen scavenger and dechlorinating agent in boiler feed water and wastewater systems to prevent corrosion.
• Photographic Industry: Serves as a developing agent and preservative in photographic fixing baths.
• Textile Manufacturing: Used as an antichlor agent to remove excess bleach (hypochlorite) after the bleaching of textiles and paper pulp.
• Chemical Synthesis: Functions as a reducing agent and sulfonating agent in various organic synthesis reactions.
• Food Processing (Technical Grade): Employed as a preservative and antioxidant, though specific food-grade compliance must be verified.
• Pharmaceutical Intermediates: Used in the synthesis of certain APIs (Active Pharmaceutical Ingredients) where a sulfite source is required.
• Laboratory Reagent: Utilized in analytical chemistry and research as a standardized reagent.

Basic Information

Product Name	Potassium Sodium Sulfite
CAS No.	100816-19-1
Molecular Formula	KNaSO3 or KNaO3S
Molecular Weight	158.16 g/mol
Synonyms	Sulfurous acid, potassium sodium salt; Potassium sodium sulphite; Sodium potassium sulfite; KNaSO3; Potassium Sodium Sulphite; UNII-8V5Q0FQ1YI; EINECS 309-115-8
EINECS	309-115-8

Quality Control

Our Potassium Sodium Sulfite is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. We provide comprehensive Certificates of Analysis (COA) upon request, detailing purity, assay, and impurity profiles. Production can be aligned with relevant industry standards, including technical and reagent grades, to suit specific application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and easily oxidized; therefore, containers must be kept tightly sealed after opening to minimize exposure to air and moisture. Store away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (KNaSO3)	≥ 98.0 %
pH (5% solution)	8.0 - 10.0
Water Insoluble Matter	≤ 0.1 %
Heavy Metals (as Pb)	≤ 20 ppm
Iron (Fe)	≤ 10 ppm

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