Sodium Sulfate 10-Hydrate CZ 100g

Sodium sulfate decahydrate (Na₂SO₄ - 10H₂O)

Technical information about the chemical reagent:

• Chemical formula: Na₂SO₄ - 10H₂O
• CAS number: 7727-73-3
• EC number: 231-820-9
• Molar mass: 322.19 g/mol
• Physical state: Solid
• External appearance: Colorless crystals
• Color: white
• Odor: odorless
• pH value (50 g/l, H₂O, 20°C): 5.0 - 8.0
• Melting point: 32.4°C
• Boiling point: at 100°C it loses its crystalline water and converts to the anhydrous form
• Auto-ignition temperature: not applicable
• Flash point: not applicable
• Explosion limits: not applicable
• Vapor pressure: not available
• Density: 1.46 g/cm³ (20°C)
• Bulk density: approx. 700 kg/m³
• Solubility in water: approx. 420 g/l (20°C)
• Solubility in organic solvents: insoluble in methanol
• Content: min. 98.5 %
• Water-insoluble components: max. 0.01 %
• pH value (5%, 20°C): 5.0 - 8.0
• Total nitrogen (N): max. 0.003 %
• Chloride (Cl): max. 0.002 %
• Phosphate (PO₄): max. 0.002 %
• Heavy metals (Pb): max. 0.001%.
• Arsenic (As): max. 0.0003%.
• Zinc (Zn): max. 0.002%
• Magnesium (Mg): max. 0.001%.
• Potassium (K): max. 0.01%.
• Calcium (Ca): max. 0.005%.
• Iron (Fe): max. 0.001%

Examples of professional applications in various industries:

• Laboratories: Reagent and component of thermostatic baths (due to phase transition at ~32°C), drying and humidity control in closed systems.
• Chemical industry: Process component, preparation of sulfate standard solutions.
• Materials industry: Crystallization/rehydration applications in process testing.

Hazard warnings on the product label:

The substance is not classified as hazardous according to CLP.

Safety information on the product label:

No mandatory P-statements. Recommended PPE: safety glasses, protective gloves; avoid inhaling dust.

Recommended storage conditions:

1. Keep in tightly closed containers, protect from loss of crystal water.
2. Store in a dry, cool, and well-ventilated place.
3. Avoid prolonged storage at temperatures above 32°C (risk of dehydration to the anhydrous form).
4. Store separately from strong acids and bases.