Professional Production Of sodium Metabisulfite Products
A comprehensive chemical production enterprise specializing in inorganic salts such as Sodium Metabisulfite, Sodium Sulfite, Sodium Bisulfite, Manganese Carbonate, etc. Our vision is to become a trusted food additive production base for customers.
About SXS Chemical
SXS Chemical Co., Ltd. was founded in 1999. The company is located in Linxiang Green Chemical Industrial Park, Yueyang City, with a superior geographical location, adjacent to Chenglingji International Container Port, relying on Yueyang’s access to the river and sea, with railways and highways crisscrossing, and convenient waterway transportation
SXS Chemical is a comprehensive chemical production enterprise specializing in inorganic salts such as sodium hydrosulfite, sodium sulfite, sodium bisulfite, manganese carbonate, etc. The company covers an area of 50000 square meters, with a total investment of 220 million yuan and a registered capital of 12 million yuan. It currently has 120 employees
Our Products
Sodium Metabisulfite (Na₂S₂O₅)
Grade: Food Grade & Industrial Grade
Chemical Formula: Na₂S₂O₅
Molecular Weight: 190.103
CAS No.: 7681-57-4
Appearance: White or slightly yellow crystalline powder
Relative Density: 1.4
Solubility: Dissolves in water (54g/100ml at 20°C; 81.7g/100ml at 100°C), soluble in glycerol, slightly soluble in ethanol
Stability: Moisture sensitive, oxidizes to sodium sulfate in air; decomposes at 150°C; reacts with strong acids to release SO₂
Sodium Bisulfite (calculated as Na₂S₂O₃) Content: ≥ 96.5%
Iron (Fe) Content: ≤ 0.003%
Sodium Sulfite Technical Grade (Na₂SO₃)
Grade: Technical Grade
Chemical Formula: Na₂SO₃
Molecular Weight: 126.04
CAS No.: 7757-83-7
Appearance: White crystalline powder or hexagonal crystals
Odor: Odorless
Solubility: Soluble in water / Slightly soluble in alcohol / Insoluble in ether
Water Solubility:12.54 g/100 ml (0°C)，28% max solubility at ，33.4°C283 g/100 ml (80°C)
pH Value: Alkaline in aqueous solution
Sodium Sulfite Food Grade (Na₂SO₃)
Grade: Food Grade
Chemical Formula: Na₂SO₃
Molecular Weight: 126.04
CAS No.: 7757-83-7
Appearance: White crystalline powder or hexagonal crystals
Odor: Odorless
Solubility: Easily soluble in water, slightly soluble in ethanol, insoluble in ether
Water Solubility: 12.54 g/100 ml (0°C), 283 g/100 ml (80°C), max solubility ~28% at 33.4°C
pH Value: Alkaline aqueous solution
Stability: Easily oxidized to sodium sulfate in air, decomposes at high temperature
Manganese Carbonate High Purity
Product Name: Manganese Carbonate
Grade: High Purity & Phosphating Grade
Chemical Formula: MnCO₃
Molecular Weight: 114.95
CAS No.: 598-62-9
Appearance: Rose-colored diamond-shaped crystals or amorphous light brown powder
Relative Density: 3.125
Solubility: Insoluble in water, soluble in dilute inorganic acids
Stability: Stable in dry air, prone to oxidation when wet forming manganese trioxide, decomposes on heating releasing CO₂
Sodium Bisulphite Food Grade (NaHSO₃)
Grade: Food Grade
Chemical Formula: NaHSO₃
Molecular Weight: 104.06
CAS No.: 7631-90-5
Appearance: White crystalline powder with odor of sulfur dioxide
Stability: Oxidizes to sulfate when exposed to air
Water-Insoluble: ≤ 0.01%
SO₂ Content: 58.5–67.4% (Result: 65%)
Iron (Fe): ≤ 50 mg/kg (Result: 42.2 mg/kg)
Arsenic (As): ≤ 2 mg/kg (Result: <2 mg/kg)
Lead (Pb): ≤ 2 mg/kg (Result: <0.005 mg/kg)
Heavy Metals (Pb): ≤ 5 mg/kg (Result: <5 mg/kg)
Selenium (Se): ≤ 5 mg/kg (Result: 0.1 mg/kg)
SXS Chemical New
1.34 vs. 3.0: Why Theoretical and Engineering SMBS Dechlorination Dosages Differ
The Purity Trap in Water Treatment: Food Grade vs. Industrial Grade Sodium Metabisulfite
Sodium Metabisulfite and Lime: The Interaction Trap in Copper Flotation
Sodium Metabisulfite as a Key Variable for Pyrite Depression in High-Salinity Copper Flotation
The Enzymatic Browning Control Race: How a 0.2% Sodium Metabisulfite Solution Achieves 96.7% PPO Inhibition
Sodium Metabisulfite in Beverage Antioxidant Engineering: How SO_2 Release Rates Dictate Flavor Stability
Sodium Metabisulfite in Active Food Packaging: Bridging the Gap from “Food Additive” to “Functional Packaging Material”
Sodium Metabisulfite in Soy Protein Processing: Trypsin Inhibitor Inactivation and Functional Improvement
2026 Sodium Metabisulfite B2B Procurement Guide: Grade & Quality Requirements Across 3 Core Applications
Sodium Metabisulfite in Cu-Mo Flotation: Resolving the “Seawater Paradox”
Breakthrough in Copper-Molybdenum Separation: How Sodium Metabisulfite Enables Selective Copper-Sulfur Depression in Seawater
