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4A沸石

· 产品编码 : 2201008

· CAS No. : As per composition list

· 分子式 : Na2O.Al2O3.2SiO2.4.5H2O

· 海关编码 : 3824999999

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详情介绍

4A Zeolite (STPP Replacement) Higher Whiteness Sodium Alumino Silicate

Chemical name:Sodium Alumino Silicate
Sales Models:Wholesale
Reference FOB Price:US $350-500 / Ton
Min Order:18.6~19.56mt
Port:Tianjin, China
Samples:US $ 100/Piece
Payment Terms:L/C, T/T, Paypal

Model:4A Zeolite

Brand:RAWCHEM

Code:22008

CAS No.:As per composition list

Molecular formula:Na2O.Al2O3.2SiO2.4.5H2O

H.S.Code:3824999999

Shelf life:24 months

Product Parameters

Appearance: white and fine free flowing powder

Composition:

Chemical Name	CAS#	Percentage
Silicon Dioxide	7631-86-9	50 max
Sodium Oxide	1313-59-3	30 max
Aluminum Oxide	1344-28-1	30 max
Magnesium Oxide	1309-48-4	5 max
Quartz	14808-60-7	3 max

Main indexes:

Index	Standard
Ca²⁺ Exchanging Capacity by mgCaCO₃/g	310 min
White (w=y) by %	97 min
pH (1% suspension, 25ºC)	11 max
Loss on Ignition (800ºC, 1 h) by wt %	19.5~20.5
Al³⁺ content by wt %	18 min
Bulk Density by g/L	500 max
Particle size by wt (on 325mesh sieve) %	0.5 max
D50 (Average particle size)	2~5 um
Less than 4 um by wt %	90 min
Less than 10 um by wt %	99 min

Main Application

Application in detergent system
Zeolite can partially replace STPP in detergent system to soften water, comparing to STPP, the advantages of zeolite are:
1. Avoiding the phosphates pollution to water systems
2. Higher whiteness
3. Faster speed in exchanging calcium ion in hard water
4. Smaller particles provides the property of good dispersing and suspension in detergent system
5. Price is cheaper by 30~50%

Why zeolite can not fully replace STPP due to STPP's other functions like:
1. Enhancing the emulsifying and dispersing power, to increase the solubility of protein and dust which normally existing in the fabrics from daily life
2. Buffering agent, to make the pH value of detergent solution on the level of 9~9.5, so that those acid dirt can be easily removed from fabrics
3. Anti-caking agent for detergent powder. Since detergent powder is easily caking in exposed air, STPP can absorb the moisture and become Hexahydrate, which is dry and free flowing

Also there is a disadvantage to use Zeolite, that it's not soluble in water, caused the sedimentation of zeolite on the fabrics after being washed many times

Important Notice

1. Our Zeolite is synthetic process, not natural zeolite powder

2. To replace STPP, meanwhile solve the Zeolite's disadvantages, we are now producing silicates series products: MSD and APSM, below is the comparison of the main indexes of STPP, Zeolite, APSM and MSD/CSDS:

Index	STPP	ZEOLITE		APSM	MSD
Index	STPP	Synthetic	Natural	(also called PSM,PSMA)	(also called CSDS)
Full name	Sodium Tripolyphosphate	4A Zeolite	Natural Zeolite	Activated Poly Sodium Metasilicate	Modified Sodium Disilicate
Appearance	White fine powder	White powder		White granular powder
Whiteness	90 min	95 min	80 min	85 min	85 min
Odor	No odor	No odor	No odor	No odor, but irritant to nose and eye
Bulk denstiy	650~950 g/L	550~700 g/L	1100~1300 g/L	350~600 g/L	480~600 g/L
Loading qty	25~26mt/20fcl	20mt/20fcl	27mt/20fcl	27mt/40HQ
Effect	Best	Normal	Bad	good
Main content	Na₅P₃O₁₀ 94% min	Na₂O.Al₂O₃	N/A	Na₂O + SiO₂ 74% min	Na₂O₂SiO₂
Ca exchange	158 mg/g	295mg/g	N/A	320 mg/g	550 mg/g
Mg exchange	N/A	175 min	N/A	330 mg/g	N/A
pH	9.2~10.3	11.0 max	11.3 max	11.0 max	12.0 max
Identical index	P₂O₅ content	Al³⁺ content	N/A	Na₂O + SiO₂ content	SiO₂ content
Value of identical index	56.5% min	18% min	N/A	75% min	25% min
Water insoluble	0.1% max	100%	almost 100%	1.5% max	1.5% max
Moisture	0.5% max	22% max	16% max	N/A	5% max

2. As far as we know from experience of natural zeolite, the price is cheaper, but function is much inferior than synthetic one, because the function of natural zeolite is created by adding other chemicals like soda ash and surfactants
3. We normally list 2 years as the shelf life in our COA, the real shelf life is actually longer than 2 years if it's stocked in good condition (bags are sealed enough, away from direct sun-light, moisture and other incompatible chemical materials)

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