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Manganese Carbonate High Purity & Phosphating Grade (MnCO₃) CAS 598-62-9

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) CAS 7631-90-5

Product Name: Sodium Bisulphite 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)

Sodium Bisulphite Tech Grade (NaHSO₃) CAS 7631-90-5

Product Name: Sodium Bisulphite Grade: Tech Grade Chemical Formula: NaHSO₃ Molecular Weight: 104.06 CAS No.: 7631-90-5 Appearance: White to slightly yellowish crystalline powder Sulfur Dioxide (SO₂) Content: ≥ 64% (Result: 65.4%) Sodium Bisulphite (NaHSO₃) Content: ≥ 99% (Result: 99.4%) Water-Insoluble: ≤ 0.03% (Result: 0.006%) Iron (Fe): ≤ 0.004% (Result: 0.002%) Heavy Metal (Pb): ≤ 0.001% (Result: 0.0005%) Stability: Oxidizes to sulfate when exposed to air

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 Food Grade (Na₂SO₃) CAS 7757-83-7

Product Name: Sodium Sulfite 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

Sodium Sulfite Technical Grade (Na₂SO₃) CAS 7757-83-7

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