(STPP Replacement) Factory Support APSM / Active Poly Sodium Metasilicate for detergent powder

• CAS No.: 1344-09-8
• Formula: Na2O.nSiO2.nH2O
• EINECS: 215-687-4
• Certification: ISO
• Purity: 95%
• Type: Sodium Metasilicate
• Model NO.: 22002
• Appearance: Powder
• Grade Standard: Industrial Grade
• Application: Replacing STPP to make detergent powder
• Ca2+ exchange capacity (CaCO3 mg/g): 320 min
• Mg2+ exchange capacity (MgCO3 mg/g): 330 min
• Na2O + SiO2 Content: 25% min
• Shelf Life: 24 months
• Transport Package: PP woven bags with PE liner
• Specification: 25kg / 650kg
• Trademark: RAWCHEM
• Origin: China
• HS Code: 3824999999
• Production Capacity: 50000

Product Description

Product Parameters

Appearance: white granular powder

Characteristic:
1. To exchange Calcium and Magnesium capacity is higher than 4A Zeolite, it is equivalent to STPP, water soften speed is quick, soften capacity is strong and temperature scope is wide
2. Good compatibility with many kinds of surfactants(especially non-ionic surfactants), and with self-consistent stain removable ability
3. It is easy to dissolve in water, 100ml water can dissolve more than 20g
4. Good characteristic of penetrating, emulsifying, suspension and anti-sediment for stain, pH buffering capacity is strong too
5. It is applicable to the slurry preparation, post-blending etc process. The product has good whiteness, fluidity and stability
6. Environmental friendly

Main indexes:

Index	Standard
Ca^2+ exchange (mgCaCO3/g), 35ºC, 20min	320 min                            (Typical value: 337)
Mg^2+ exchange (mgMgCO3/g),35ºC, 20min	330 min                            (Typical value: 332)
Na2O + SiO2 by wt %	75 min                              (Typical value: 76)
pH value (25ºC,1% solution)	11 max                             (Typical value: 10.8)
Whiteness by %	85 min                              (Typical value: 90)
Water insoluble by %	1.5 max                            (Typical value: 0.8)
Bulk density by g/cm^3	0.48~0.60                         (Typical value: 0.55)
Particle size (through 20mesh sieve) by wt %	90 min                              (Typical value: 92)

Properties: 

 · Calcium exchange capacity test

Calcium Exchange Capacity	APSM	4A zeolite	STPP	Sodium Metasilicate Anhydrous
By mg CaCO3/g	337	286	158	362

 · APSM acid resistance capacity test

HCl Resistance Capacity	APSM	4A zeolite	STPP	Sodium Metasilicate Anhydrous
By mL	16.90	2.00	1.75	17.00

 · Test method:
 - 2g sample (accuracy to 0.001g) to 50ml distilled water in beaker, agitate it with magnetic force
 - Use 0.5mol/L HCL solution to titrate till the pH value decline from 11 to 8
 - Read the consumed HCl solution Volume
 

 · APSM Solubility test

Solubility (in 100ml water, 20ºC)	LAS	AEO9	AES	TX-10	BS-12	APSM
0.05% Solution of surfactant only	0.210	0.595	0.539	0.193	0.110	0.310
0.1% solution of APSM + Surfactant APSM: surfactant = 1:1 to be mixed	0.910	1.30	1.10	1.10	0.88

 · Application test

Composition\Formula	APSM	4A zeolite	STPP	Sodium Metasilicate Anhydrous
LAS	15.6	15.6	15.6	15.6
AEO9	2.0	2.0	2.0	2.0
Na2CO3	10.0	10.0	10.0	10.0
Builder	16.0	16.0	16.0	16.0
Na2SO4	44.6	44.6	44.6	44.6
Sodium Silicate (module 2.5)	20	20	20	20
Brightener	0.1	0.1	0.1	0.1
PMA-70	1.3	1.3	1.3	1.3
Stain remove capacity	1.059	0.91	1.09	1.025

 

 · Whiteness and ash content test

Detergent powder sample	APSM	4A Zeolite	STPP
Wash 20 times the whiteness maintain	98.0	89.5	89.0
Wash 20 times settled ash content	1.225	1.264	1.220

 

Detailed Photos

 

Important Notice

 

 · Suggested Formulation

Composition\Formula	Low Phos-1	Low phos-2	Phos free-1	Phos free-2	Phos free-3	Phos free-4
LAS	13.5	9.6	14.5	9.6	14	15
AOS	------	2.4	------	2.4	------	------
AEO9	0.5	0.5	0.5	0.5	------	0.5
Sodium silicate	8	6	8	6	8	10
Sodium carbonate	10	10	15	16	16	14
STPP	14.4	14.5	------	------	------	------
4A zeolite	------	------	9	9	------	------
APSM	5	5	9	9	10.5	10.5
BLF	0.04	0.04	0.04	0.04	0.04	0.25(#33)
Enzyme	0.20	0.25	0.20	0.25	0.25	0.25
CMC	------	------	------	------	------	1
Sodium sulphonate	To balance

 

1. Suggested processing sequence:
   Water  --->  Liquid caustic soda  --->  Sulfonic acid  --->  Sodium silicate  --->  Sodium carbonate  --->  APSM  --->  SSA

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
		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	Al^3+ 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

3. APSM can not completely replace STPP due to STPP's features of:
 - Enhancing the emulsifying and dispersing power, to increase the solubility of protein and dust which normally existing in the fabrics from daily life
 - 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

4. We normally list 2 years as the shelf life in our COA, the real shelf life is actually much 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)

Factory Photos

 

 

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