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22006
SMP
Sodium Metasilicate Pentahydrate
SMS-5H2O
10213-79-3
212.14
Na2SiO3.5H2O
229-912-9
2839110000
Appearance: white crystalline powder
Properties and functions:
SMP is strongly alkaline, having strong capacity of cleaning, buffering and softening, counteracting acidic contamination, emulsifying fat and oil, deflocculating to inorganic
It can replace STPP to be used for the manufacture of effective detergents and rust remover for metal, reducing environmental pollution, preventing corrosion for metal (zinc, aluminum, etc.)
Physical and Chemical data:
| Melting Point | Boiling point | Density |
| 72ºC | 118ºC | 2.61g/m3 |
Other Related indexes:
| EINECS | RTECS | PubChem | MDL |
| 229-912-9 | VV9287500 | 24886295 | MFCD00149176 |
Solubility: Soluble in water, solubility is 50g in 100g water (20ºC)
Main indexes:
| Index | Standard |
| Sodium oxide(Na2O) by wt % | 28.7~30.00 |
| SiO2 by wt % | 27.8~29.2 |
| Water insoluble by wt % | 0.05 max |
| Fe by ppm | 100 max |
| Whiteness % | 80 min |
| Bulk Density by g/cc | 0.80~0.97 |
| PH of 1.0% Solution | 12-13 |
| Particle Size by wt % (40~100mesh) | 90 min |
Detergent industry
Oil drilling (drilling mud thickness modifier)
Paper making
Porcelain industry
Rust remover for metal
Dyeing and printing auxiliary for removing oil in textile industry
Raw material for flameproofing agent
Plastic maintenance agent
Water retention agent
Water reducing agents and etc.
Application in detergent industry:
With above features, SMP is a good auxiliary for detergent system
SMP is also a good water softener, especially for Mg2+ ion, its exchange capacity of Mg2+ is 260mgMgCO3/g (35ºC , 20min)
There are 3 types of sodium metasilicate: Sodium Metasilicate Anhydrous/ Pentahydrate/ Nonahydrate Rawchem is running anhydrous and pentahydrate, not nonahydrate
We normally list 24 months as the shelf life in our COA, the real shelf life can be slightly longer than 24 months if it's stocked in good condition (bags are sealed enough, away from direct sun-light, moisture and other incompatible chemical materials), but it's still suggested to avoid long time storage
Appearance: white crystalline powder
Properties and functions:
SMP is strongly alkaline, having strong capacity of cleaning, buffering and softening, counteracting acidic contamination, emulsifying fat and oil, deflocculating to inorganic
It can replace STPP to be used for the manufacture of effective detergents and rust remover for metal, reducing environmental pollution, preventing corrosion for metal (zinc, aluminum, etc.)
Physical and Chemical data:
| Melting Point | Boiling point | Density |
| 72ºC | 118ºC | 2.61g/m3 |
Other Related indexes:
| EINECS | RTECS | PubChem | MDL |
| 229-912-9 | VV9287500 | 24886295 | MFCD00149176 |
Solubility: Soluble in water, solubility is 50g in 100g water (20ºC)
Main indexes:
| Index | Standard |
| Sodium oxide(Na2O) by wt % | 28.7~30.00 |
| SiO2 by wt % | 27.8~29.2 |
| Water insoluble by wt % | 0.05 max |
| Fe by ppm | 100 max |
| Whiteness % | 80 min |
| Bulk Density by g/cc | 0.80~0.97 |
| PH of 1.0% Solution | 12-13 |
| Particle Size by wt % (40~100mesh) | 90 min |
Detergent industry
Oil drilling (drilling mud thickness modifier)
Paper making
Porcelain industry
Rust remover for metal
Dyeing and printing auxiliary for removing oil in textile industry
Raw material for flameproofing agent
Plastic maintenance agent
Water retention agent
Water reducing agents and etc.
Application in detergent industry:
With above features, SMP is a good auxiliary for detergent system
SMP is also a good water softener, especially for Mg2+ ion, its exchange capacity of Mg2+ is 260mgMgCO3/g (35ºC , 20min)
There are 3 types of sodium metasilicate: Sodium Metasilicate Anhydrous/ Pentahydrate/ Nonahydrate Rawchem is running anhydrous and pentahydrate, not nonahydrate
We normally list 24 months as the shelf life in our COA, the real shelf life can be slightly longer than 24 months if it's stocked in good condition (bags are sealed enough, away from direct sun-light, moisture and other incompatible chemical materials), but it's still suggested to avoid long time storage
