Product Description:
A white, water-soluble solid used as an antioxidant and preservative in various applications.
Applications & Uses:
CAS#:
7757-83-7
SYNONYM:
Sodium sulfite;Disodium sulfite;Sulfurous acid, disodium salt;Sulfoxylic acid, disodium salt
FORMULA:
Na2SO3
PRODUCT TYPE:
HAZARD:
Irritant
CATEGORIES:
Chemical Fixer
,
Water Treatment
,
Food Chemicals
Technical Specifications
Appearance :
White crystalline powder
Density, g/cm3 :
2.63
Melting point, °C :
33.4
Molecular weight, g/mol :
126.04
Odor :
Odorless
Sodium Sulfite is a white crystalline or powdery compound characterized by its high solubility in water and slight solubility in alcohol, making it versatile for various industrial and commercial applications. Known for its powerful reducing properties, Sodium Sulfite plays an essential role in the pulp and paper industry as a bleaching agent and anti-chlorine agent, reducing levels of free chlorine in paper manufacturing processes. In the realm of water treatment, it serves as an oxygen scavenger, effectively deoxygenating water and extending the life of industrial boilers. Sodium Sulfite is also employed in the photography industry to stabilize developer solutions and enhance the longevity of photographic prints. Additionally, in the food industry, it acts as a preservative and an antioxidant, helping to maintain the freshness and color of products such as dried fruits and canned goods. With its multifaceted utility and reliable performance, Sodium Sulfite is a critical component in various sectors, ensuring quality and efficiency across applications.