Basic product information of 4A zeolite CAS 1318-02-1
Product name: 4A zeolite; 4A molecular sieve; synthetic zeolite
English name: Zeolite 4A; Sodium Aluminosilicate
CAS No.：1318-02-1
EC number: 215-283-8
Theoretical molecular formula: Na12[(AlO2)12(SiO2)12]⋅27H2O
Aperture: 0.42 nm (4 Å, name derived)
HS code reference: 2842909000 (aluminosilicate)
Physical and chemical characteristics
Appearance: White fine crystalline powder, odorless and tasteless
Solubility: insoluble in water and organic solvents; Slowly dissolve in strong acid or concentrated alkali
Core features: having regular cage shaped crystal channels; Selective calcium ion exchange capacity (core function of the washing industry)Adsorption performance: capable of adsorbing water and small molecule gases; Heating to remove crystalline water and activating regeneration
Density: Bulk density of 300-400 g/L; The true density is about 2.07 g/cm ³
Stability: Stable at room temperature; Crystal structure collapse above 800 ℃; The aqueous solution is weakly alkaline (pH ≈ 10-11, 10% suspension)
Main use
Detergent and detergent aid (maximum application)
Replace sodium tripolyphosphate and soften water quality by combining Ca ² ⁺ and Mg ² ⁺ in hard water; Phosphorus free environmentally friendly laundry detergent and laundry detergent raw materials.
Desiccant and adsorbent
Industrial gas drying and organic solvent dehydration; Selective adsorption of small molecules.
Water treatment industry
Heavy metal adsorption and hard water softening in industrial wastewater; Circulating water removes calcium and magnesium ions.
Catalyst carrier
Petrochemical and fine chemical reaction carriers; Selective catalysis.
Other
Plastic fillers, feed additives, soil improvement, and daily chemical powder adsorption carriers.
Industrial General Quality Indicators (COA English Table for Washing Grade) |
|---|
| Appearance | White fine powder |
| Calcium Exchange Capacity | ≥310 mg CaCO₃/g (dry base) |
| Loss on Ignition (550℃, 2h) | 18.0 ~ 22.0 % |
| Whiteness | ≥90 % |
| Particle Size (≤4μm) | ≥90 % |
| Particle Size (≥10μm) | ≤1.0 % |
| Water Insoluble Substance | ≤0.5 % |
| Heavy Metal (Pb) | ≤10 ppm |
| Iron (Fe) | ≤200 ppm |
Grade differentiation: The indicators for washing grade, desiccant grade, and catalytic carrier grade are different, and the purpose should be clearly stated when placing an order;
Packaging specifications
Standard foreign trade packaging:
25kg multi-layer kraft paper coated bag (lined with PE inner film)Ton bags: 500kg/1000kg large bags (for bulk shipping)
Sample: 1kg, 5kg sealed bags
Storage and transportation requirements
Storage conditions
Store in a cool, dry, and ventilated warehouse to prevent moisture and water absorption (exchange capacity decreases after water absorption)Sealed packaging bag to avoid long-term exposure to air and adsorption of water vapor
Stay away from strong acids and store in designated areas
Key points of transportation
Ordinary general cargo, not classified as hazardous chemicals
Rainproof and moisture-proof transportation to prevent packaging bag damage
Cannot be mixed with concentrated acid for transportation
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