4A Molecular sieve

• Post Date:

  Mar 22,2013

• Expiry Date:

  Sep 18,2013

• Detailed Description:

  Cas No. :1327-44-2

  GENERAL

  • Molecular sieve type 4A, the sodium form of the type A crystal structure, is an ankle metal aluminosilicate. Type 4A will adsorb molecules with critical diameters up to 4 angstroms.
  • Chemical formula is Na12[(AlO2)12(SiO2)12]XH2O
  • Molecular sieve type 4A can be regenerated for re-use by purging or evacuating at elevated temperatures.  The degree of regeneration (water removal) is dependent on the temperature and humidity of the purge gas.

   

  APPLICATION
  Type 4A is the preferred Molecular sieve adsorbent for static dehydration in a closed gas or liquid system.  It is used as a static desiccant in household refrigeration systems, in packaging of drugs, electronic components, and perishable chemicals, and as a water scavenger and paint and plastic systems.  Type 4A is also used commercially in drying saturated hydrocarbon streams.

   

  FEATURES AND BENEFITS

  • High selectivity
  • Low attrition loss
  • High crush strength
  • High H2O capacity

   

  PACKING
  50kg or 140kg/steel drum

   

  QUALITY STANDARD
  GB standard
  Refer to ASTM AND UOP standard

   

  TYPICAL PROPERTIES

  	4A 4*8	4A 8*12	4A-DG 1/8"	4A-DG 1/16"
  Normal Pore Diameter(Å)	4	4	4	4
  Particle Diameter（mm）	2.38-4.75	1.58-2.38	2.92-3.43	1.46-1.97
  Bulk Density(kg/m3)	640	670	660	660
  Crush Strength(N)	80	31	71	26
  Equilibrium H2O Capacity (wt-%)*	21.0	21.0	21.0	21.0
  Water Content as shipped (wt-%)	≤1.5	≤1.5	≤1.5	≤1.5

  *Gram H2O/100 Gram activated adsorbent at 17.5 mm Hg. 25℃

• CAS Registry Number:

  1327-44-2

• Synonyms:

  ;MOLECULAR SIEVE, ACTIVATED, INDICATING, TYPE 4A;MOLECULAR SIEVE, ACTIVATED, TYPE 3A;MOLECULAR SIEVE, ACTIVATED, TYPE 4A;MOLECULAR SIEVE, ACTIVATED, TYPE 5A;MOLECULAR SIEVES 5;SODIUM ALUMINO-SILICATE;Silicicacid,aluminumpotassiumsalt;ALUMINUM POTASSIUM SILICATE;POTASSIUM ALUMINOSILICATE;MOLECULAR SIEVES TYPE 5A;MOLECULAR SIEVE TYPE 3A;MOLECULAR SIEVE TYPE 4A;MOLECULAR SIEVE TYPE 5A;MOLECULAR SIEVE TYPE AW-300;potassium aluminum sulfate;3A Molecular Sieve;4A Molecular Sieve;5A Molecular Sieve;13X Molecular Sieve;

• Molecular Formula:

  AlKO₄S

• Molecular Weight:

  162.143

• Molecular Structure:

  

• Hazard Symbols:

   Xn:Harmful;
  

• Risk Codes:

  R20:;
  R36/37:;
  

• Safety Description:

  S26:;
  S36:;
  S7/9:;
  

• Company:

  Shanghai Jingxin Technology Co., Ltd.     [ China ]          

• Contact:

  Manager Liu

• Tel:

  +86-21-66959846

• Fax:

  +86-21-66957344

• Email:

  james_law_@hotmail.com,sales@shjingxinchem.com