Molecular Sieve 3A for Insulating Glass in 150kg Barrel-Iftapproved Quality with 0.9-1.5mm

• CAS No.: 1318-02-1
• Formula: 2/3K2o.1/3na2o.Al2O3.2sio2.9/2H2O
• EINECS: 215-283-8;930-915-9
• Certification: Ift
• Purity: ≥99%
• Type: Zeolite
• Model NO.: 0.9-1.5mm
• Appearance: Granule
• Grade Standard: Industrial Grade
• Leading Time: 5 Days After Order Confirmation
• Certificate: Ift
• OEM: Yes
• Transport Package: 25kg Carton Box, 140kg Fiber Drum, 150kg Barrel
• Specification: 0.5-0.9mm, 1.0-1.5mm, 1.5-2.0mm
• Trademark: CHICO
• Origin: China
• HS Code: 3824909990
• Production Capacity: 20000000kg

Product Description

Molecular Sieve 3A for Insulating Glass in 150kg Barrel-Iftapproved Quality with 0.9-1.5mm

1. Molecular sieve
Molecular sieve (also called as synthesized zeolite) is a kind of silica-aluminates with micro-porous crystal. It is a frame-work which is constructed by SiO₂ and Al₂O₃. Molecular sieve has very similar aperture value (only several A) and large surface area. There are relevant positive ions in its lattice to balance the negative ions in the crystal frame. Different molecular sieves have different shapes and different aperture values. We could separate different kinds of molecular by selectively using different molecular sieves. Water is a sort of polar molecule, molecular sieve type A has dramatic affinity for water. For the above reasons, molecular sieve is considered as the most ideal desiccant. The molecular sieve here mentioned is type 3A which is only for adsorbing water. The water adoption depth of molecular sieve 3A is above several dozen times higher than other any other applicable desiccants.
 
2.  Molecular sieve 3A
Most molecular sieves have been affinity to water, such as other molecular sieve 4A, 5A, 13X, type Y and so on. They all also adsorb other molecules from air. The pore of  molecular sieve 3A is 3 angstrom, which can only adsorbs molecule smaller than this size, water molecule is just meet this size, so molecular sieve 3A can only adsorb water other than Nitrogen and Oxygen in air.
The following form lists 4 types of common desiccants often used in IG and their aperture values. This form also shows which kinds of molecules are likely to be absorbed by these desiccants.
 

Desiccant Type	Pore Size (angstrom)	Absorb Substances	Repel substances
3A	3	H2O	All others
4A	4	H2O, nitrogen	Ar, Kr, large molecule gases
13X	8.5	H2O, most gases, small molecule liquids	Large molecule liquids
Silica gel	200-300	All	Non

 
3.  Molecular sieve 3A and insulating glass desiccant
If use other molecular sieve as desiccant, these molecular sieves can also adsorb nitrogen or oxygen in air at lower temperature, and could release air at higher temperature, the inflated and shrinking air could cause window to be distorted with the temperature changing at day-night or seasons changing. Up to now, molecular sieve 3A is the unique proper desiccant which is suitable for insulating glass unit.
 
4.  CHICO sieve (insulating glass desiccant)
3A insulating glass (IG) desiccant (CHICO sieve) is made from molecular sieve 3A. This IG desiccant can deeply co-adsorb resident moisture and organics in insulating glass, keep the IG clear and transparent even at very low outside temperature, prevent the condense of inside vapor. More importantly, it can resolve the problem of window distortion caused by IG inflation and shrinking under season or day-night temperature changing; this would prolong the life span of IG windows considerably.

5. Technical parameter
 

Item	Unit	Target
Diameter	mm	0.5-0.9	1.0-1.5	1.5-2.0
Bulk density	g/ml	0.75-0.85	0.75-0.85	0.75-0.85
Size ratio up to grade	%	≥98.0	≥98.0	≥98.0
Delta T value	ºC(10g MS-3A/10ml H2O)	≥30	≥30	≥30
	ºC(50g MS-3A/50ml H2O)	≥30	≥30	≥30
AWAC	%(RH9%, 25ºC)	≥16.0	≥16.0	≥16.0
Nitrogen adsorption	ml/g (250ml-MS 3A, 70ºC, 4hs)	≤0.3	≤0.3	≤0.3
Dew point	ºC	≤-60	≤-60	≤-60
Dust drops	NTU	≤50	≤50	≤50
LOI	%(540ºC)	≤1.7	≤1.7	≤1.7