Description

Ammonium Sulfite Solution is an inorganic salt solution widely used as a versatile reducing agent and sulfur source. Its commercial importance stems from its ability to effectively scavenge oxygen and act as a precursor in various chemical syntheses. This product is essential for manufacturers in the photographic, textile, and water treatment industries seeking reliable and consistent chemical performance.

Application

• Photographic Industry: Acts as a key component in photographic developing solutions and fixers.
• Textile Processing: Utilized as a reducing agent and bleach in textile manufacturing and dyeing processes.
• Water Treatment: Serves as an effective oxygen scavenger in boiler water treatment to prevent corrosion.
• Chemical Synthesis: Employed as a sulfur source and reducing agent in the production of other sulfur-containing compounds.
• Pulp & Paper Industry: Used in certain pulping and bleaching processes.
• Analytical Chemistry: Functions as a reagent in various analytical procedures and titrations.

Basic Information

Product Name	Ammonium Sulfite Solution
CAS No.	17026-44-7
Molecular Formula	(NH4)2SO3·xH2O
Molecular Weight	116.14 (anhydrous basis)
Synonyms	Diammonium sulfite; Sulfurous acid, diammonium salt; Ammonium sulphite; Ammonium sulfite hydrate; (NH4)2SO3; EINECS 241-098-5
EINECS	241-098-5

Quality Control

Our Ammonium Sulfite Solution is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for assay, clarity, and impurity profiles. A Certificate of Analysis (COA) detailing the results is provided with every shipment to guarantee traceability and consistency for your processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat and incompatible materials. Due to its nature as an easily oxidized compound, it is recommended to store under an inert atmosphere where practical and minimize headspace in containers. Keep away from strong oxidizing agents and acids.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (as (NH4)2SO3)	40 - 45% w/w (or as specified)
pH (at 20°C)	8.0 - 9.5
Heavy Metals (as Pb)	< 10 ppm
Chloride (Cl)	< 50 ppm

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