Molecular sieves, 4A
Product Detail
ACS Material Molecular Sieves 4A (Zeolite 4A) is a microporous sodium aluminosilicate molecular sieve with a pore size of ~4 Å and a SiO2/Al2O3 ratio of ≈ 2. It is supplied as spherical beads in two sizes: Type A, 4–8 mesh (3.0–5.0 mm), and Type B, 8–12 mesh (1.5–2.5 mm).
Product information
| Parameter | Value |
|---|---|
| Product name | Molecular Sieve 4A; 4A Molecular Sieve; Zeolite 4A |
| Chemical formula | Na2O • Al2O3 • 2 SiO2 • 9/2 H2O |
| Silica-alumina ratio | SiO2/Al2O3 ≈ 2 |
| Pore size | ~4 Å |
| CAS No. | 70955-01-0 |
Characterizations
| Characterizations | Type A | Type B |
|---|---|---|
| Appearance | Beads (spherical) | Beads (spherical) |
| Diameter (mesh / mm) | 4–8 / 3.0–5.0 | 8–12 / 1.5–2.5 |
| Static water adsorption (wt.%), RH 50%, 25 °C | ≥21 | ≥21 |
| Loss on ignition (wt.%), 575 °C, 1 h | ≤1.50 | ≤1.50 |
| Bulk density (g/mL) | ≥0.66 | ≥0.66 |
| Abrasion (wt.%) | ≤0.1 | ≤0.1 |
| Compressive strength (N) | ≥65 | ≥40 |
| Granularity (%) | ≥97 | ≥97 |
Ordering information
| Type | Package | Product No. |
|---|---|---|
| Type A: 4–8 mesh | 1 kg | M4A01G31 |
| Type B: 8–12 mesh | 1 kg | M4A02G31 |
Application fields
- Polyester additives.
- Sewage treatment.
- Metallurgical industry.
- Agriculture: soil amendments.
- Medicine: silver-loaded zeolite antibacterial agent.
- Petrochemical industry: catalysts, desiccants, adsorbents.
FAQ
What is ACS Material Molecular Sieves 4A?
It is Zeolite 4A, a molecular sieve with a pore size of ~4 Å and a SiO2/Al2O3 ratio of ≈ 2, supplied as spherical beads.
What is the difference between Type A and Type B?
Type A beads are 4–8 mesh (3.0–5.0 mm) with a compressive strength of ≥65 N; Type B beads are 8–12 mesh (1.5–2.5 mm) with a compressive strength of ≥40 N.
What are the key specifications?
Static water adsorption ≥21 wt.% (RH 50%, 25 °C), loss on ignition ≤1.50 wt.% (575 °C, 1 h), bulk density ≥0.66 g/mL, abrasion ≤0.1 wt.% and granularity ≥97%.
Which package size is available?
Both types are supplied in 1 kg packages: Type A (M4A01G31) and Type B (M4A02G31).
Where can I find the TDS?
The Technical Data Sheet (TDS) for this product is available under the price on this page.