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Quick Details

  • Classification: Chemical Auxiliary Agent
  • Other Names: Molecular Sieve 4A
  • MF: Al2O3
  • Purity: 100
  • Place of Origin: Jiangxi, China (Mainland)
  • Type: Adsorbent
  • Adsorbent Variety: Molecular Sieve
  • Usage: Coating Auxiliary Agents, Electronics Chemicals, Leather Auxiliary Agents, Paper Chemicals, Petroleum Additives, Water Treatment Chemicals
  • Brand Name: RP
  • Model Number: 4A
  • Shape: Bead, Pellet
  • COA: Available
  • Specification: Available
  • Certificate: ISO9001:2008
  • Other Types: 3A, 5A, 13X, 13X-APG, 13X-HP

Packaging & Delivery

Packaging Details carton boxes;carton drum;steel drum with pallets
Delivery Time Shipped in 30 days after payment
Product Description

 Molecular Sieve 4A


Molecular Sieve 4A is an alkali alumino silicate; it is the sodium form of the Type A crystal structure. 4A molecular sieve has an effective pore opening of about 4 angstroms (0.4nm). RP type 4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger. Such adsorbable molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxyde and straight chain hydrocarbons. Branched chain hydrocarbons and aromatics are excluded.




n Oxygen Adsorption

n Nitrogen Adsorption

n Carbon Dioxide Adsorption

n Packaging of Pharmaceuticals

n Packaging of Perishable Chemicals

n Packaging of Electronics

n Water Scavenger in Paint Systems

n Water Scavenger in Plastic Systems

n Commercial Drying of Saturated Hydrocarbons

n Drying and removing of CO2 from natural gas, LPG, air, inert and athmospheric gases, etc.

n Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia syn gas treating)

n Special types are used in the air break units of buses, trucks and locomotives.

n Packed in small bags, it may be used simply as a packaging desiccant.




RP molecular sieve Type 4A can be regenerated by either heating in the case of thermal swing processes; or by lowering the pressure in the case of pressure swing processes. To remove moisture from a 4A molecular sieve, a temperature of 250-280°C is required. A properly regenerated molecular sieve can give moisture dew points below -100°C. The outlet concentrations on a pressure swing process will depend on the gas present, and on the conditions of the process





Store RP molecular sieve in a dry location to prevent premature water adsorption. Reseal packages after opening to prevent contamination and unintended water adsorption. We recommend that you rotate stock so oldest material is used first.



To avoid damp and pre-adsorption of organic before running, or must to be reactivated






Bead Size




Size qualification




Bulk Density




Wear Ratio




Crush Strength




Equilibrium Water Capacity @ 25°C




Static methanol adsorption




Package Moisture






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