Layered Compound Sodium Silicate (APSM)
APSM is a sparay-dried powder or granule (density 0.2-0.55g/ml) that is comprised of ß-type sodium silicate crystals, amorphous sodium silicate and auxiliary agents. It is intended for use as 4A zeolite or STPP surrogate in non-phosphorus detergent products.
Production: 20,000T per year
Characteristics:
1. The Ca/Mg sequestrability of APSM is higher than 4A zeolite and equivalent to STPP. That results in faster water softening.
2. APSM has good compatibility with detergent agents, particularly non-ionic surfactants. It has moderate detergency when used individually.
3. Excellent water solubility (>15g/100ml).
4. Excellent penetrating, emulsifying, suspending, anti-settling and pH buffering properties.
5. High whiteness.
6. APSM can significantly improve fluidity of stock liquid (pre-drying) and allow higher solid content, thus reduce energy cost.
7. Ideal surrogate for 4A zeolite.
Specification:
|
Typical measured value |
| Ca exchange capacity (calculated as CaCO3 ), mg/g |
≥ |
330 |
| Mg exchange capacity (calculated as MgCO3 ), mg/g |
≥ |
340 |
| Particle size (20 mesh sieve),% |
≥ |
90 |
| Whiteness,% |
≥ |
90 |
| pH,(0.1% aq. sol.,25°C) |
≤ |
11.0 |
| Water insolubles,% |
≤ |
1.5 |
| Water,% |
≤ |
5.0 |
| Na2O+SiO2 , % |
≥ |
77 |
All products conform to Q/YXD01-2003 standard as tested by the State Detergent Test Center (Taiyuan).
Formulation Examples
Below are examples of formulation of three detergent powders produced by Anhui Quanli, a Guandong company and Jiangsu Longliqi. All three products conform to GB/T13171-2004.
|
Anhui Quanli |
Guangdong company |
Jiansu Longliqi |
| LAS |
16(96%) |
14.8 |
14 |
| AEO9 |
1 |
1.8(QP-10) |
1 |
| NaOH |
2.20 |
1.90 |
1.73 |
| Sodium silicate |
10 (dry) |
8 |
8 |
| Sodium carbonate |
14 |
10 |
10 |
| Whitener |
0.1BES
0.02CBS |
0.1 |
0.1 |
| APSM |
10.5 |
13 |
10.5 |
| Water |
4 |
5 |
5 |
| Fragrance |
0.12 |
0.1 |
0.1 |
| Sodium sulfate |
42.5 |
43.9 |
40.27 |
| Blue powder (enzyme) |
0.5 |
0.5 |
enzyme 0.3 |
| Test Result |
| Detergency |
Grease soiled cloth |
1.12 |
1.12 |
1.05 |
| Sebum soiled cloth |
1.43 |
|
1.3 |
| Protein soiled cloth |
1.16 |
|
1.56 |
| Whiteness |
105 |
|
|
| Foam |
good |
good |
|
| Free alkali |
9.02 |
|
|
| pH |
10.55 |
10.66 |
|
|
