Affordable Sodium Sulfite Supplier-Mondstar

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Chemical name: Sodium sulfite; E221

CAS Number:7757-83-7

EINECS Number:231-821-4

Molecular formula: Na2SO3

Molecular weight:126.04

Product Standard: GB1886/EP/USP/FCC

Packaging:

Polypropylene woven bag lined with polyethylene plastic bag or paper-plastic composite bag. 25 kg/bag or 1000kg/bag.

Storage Condition:

Keep well closed in its original packing in a cool and dry place.

Shelf life: 2 years.

Buying Guide:

Sodium Sulfite

Mondstar offers a diverse range of chemical products and is your preferred supplier of food additives and ingredients, providing high-quality sodium sulfite powder wholesale and export services. For more information, you can directly contact [email protected] or call +86-17303712627.

Product Overview

Sodium Sulfite, represented by the sodium sulfite formula Na2SO3, is a white to light yellow crystal or granular powder characterized by its distinctive pungent sulfur dioxide odor. It is notable for its hygroscopic nature, readily absorbing moisture from the air, which underscores its reactivity and utility in various applications. The sodium sulfite molar mass, 126.04 g/mol, contributes to its excellent solubility in water, where it swiftly dissolves to form a clear solution. A key aspect of its chemical profile is the sodium sulfite pH range of 3-5 when in an aqueous solution, indicating an acidic nature. This compound functions effectively as a reducing agent and antioxidant, integral to its broad utility in diverse sectors. Its sulfate chemistry allows it to react with acids, producing sodium salts and sulfur dioxide gas, a reaction that highlights its versatility and importance in industrial processes.

Specifications

Item	standard	Company standard
Item	GB1886.8-2015	Company standard
sodium sulfite (Na2SO3), mass fraction /%	≥96.0	≥97.0
Fe, mass fraction /%	≤0.01	≤0.001
Free alkali(As content Na2CO3), mass fraction /%	≤0.60	≤0.4
Heavy metal content(Pb), mass fraction /%	≤0.001	≤0.0005
As content (As content), mass fraction /%	≤0.0002	≤0.0002
Clarity	Passed	Passed

The main application of Sodium Sulfite

Sodium sulfite in food and beverage industry is used as a preservative and anti-browning agent in wine, dried fruit, condiments, and fruit juices to prevent discoloration and keep products fresh. It is also used to handle fermentation processes.
Sodium sulfite in skin care products functions as a preservative to extend shelf life by inhibiting bacterial growth that can spoil formulas.
Sodium sulfite uses in pharmaceuticals as an antioxidant and preservative to maintain stability and shelf life. It is also used as a sulfonating agent.
Sodium sulfite in water treatment is used to remove chlorine and other disinfectant residues from municipal drinking water supplies. It helps control corrosion in electrical distribution systems.
Sodium sulfite in textiles is used as a bleaching agent for wool and silk to remove natural color and increase whiteness.
Sodium sulfite in papermaking is used to bleach lignin and extract color from wood pulp, improving the brightness and whiteness of paper products.