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calcium peroxide, magnesium peroxide
News Synthetic magnesium silicate is approved as per recomendations of Food and Agricultural Organization of the United Nations/World Health Organization Joint Expert Committee on Food Additives, 61st Session, published in NFP 52, Add 11, 2003. also it is approved by The U.S. Food Chemical Codex. When used as a food additive, it is safe to ingest synthetic magnesium silicate. In 1990, the safety of synthetic magnesium silicate was reviewed by the Scientific Committee on Food (SCF) together with that of silica and the other metal alkali silicates Visit Press Room

Synthetic Magnesium Silicate


Synthetic Magnesium Silicate Adsorbent is white fine powder, amorphous, with vesicular structure and huge specific area, it is an amphoteric compound capable of adsorbing either acid or alkali metal catalyst. It is an efficient refining and purifying agent in the production of polyols for its excellent depicking, deodorizing, potassium ion adsorbing effects and function as filter medium.

1) Used as adsorbent for when purifying of non-polar organic compound typically like polyether polyols, it has been discovered that the process of catalyst removal from polyols can be improved by adding a critical amount of water, 1.0 to 5.0 percent by weight, based on the weight of polyol to the mixture of polyol and adsorbent prior to heating and filtration.
2) Prolong or refresh Frying Cooking Oil, it can get rid of FFA, sodium salts, glycerin.
3) Dry wash and polish of biodiesel

Technical Information

♠ Chemical Name: Synthetic Magnesium Silicate
♠ Molecular Formula: MgO.nSiO2.xH2O
♠ CAS Number: 1343-88-0

Product Properties Standard Specifications
SiO2, % 67 Min.
MgO,% 15 Min.
Loss on Drying (105 ° C,2h),% 15 Max.
Particle Size(250mm-125mm) Min.90
*Activity, mgKOH/g 220-241
*Filtration Time (s) ~60
**Free Alkali, % 1 Max.
**Soluble Salts, % 3 Max
**Fluoride 10mg/kg Max.
**Lead 5 mg/kg Max.
Appearance White powder with good fluidity
Packing 20kgs in Kraft paper bags

Note: * Test items may be required for polyols applicaiton, **Test items may be required by food application (Recommendation based on Food and Agricultural Organization of the United Nations/World Health Organization Joint Expert Committee on Food Additives, 61st Session, published in NFP 52, Add 11, 2003.)

typically is required for applicaiton

The crude polyols, after being blended with about 5%wt of water at 80~90°C for 15 minutes, are reacted with H3PO4 (a little more than the crude polyols in amount) for 1 hour, with the pH value of the neutralization solution controlled between 5.0~5.5. At this stage, 1%wt of synthetic magnesium silicate adsorbent is added into and blended with the solution while heating the temperature to 105°C~115°C . Then dehydrate the solution at the speed from slow to quick in order to make the KH2PO4 crystals well-proportionally formed. The dehydration process ends when the moisture reaches to minimum amount e.g. 0.05%wt. The filtering circulation follows and continues for 1 hour at the temperature of 105°C~115°C, pressure at 2~4Kpa. Analyze the content of K+(Na+). Filtration begins when the content of K+(Na+) is less than 3ppm. The filtered liquor is the finished product.

Handling and Storage

♣ Store in a cool, well ventilated area away from all source of ignition and out of direct sunlight. Store in a dry location away from heat. Store at room temperatures.
♣ Keep away from incompatible materials. Keep containers tightly closed. Do not store in unlabeled or mislabeled containers. Never return unused product to storage container. 
♣ Protect from moisture. Keep containers well sealed.
♣ Avoid contact with eyes, skin, and clothing. Use with adequate ventilation.
♣ Do not swallow. Avoid breathing vapors, mists, or dust. Do not eat, drink, or smoke in work area. 
♣ Prevent contact with combustible or organic materials.
♣ Label containers and keep them tightly closed when not in use.
♣ Wash thoroughly after handling.

First-aid Measures

♣ Inhalation- Remove affected person to fresh air. Do not use mouth-to mouth resuscitation. Seek medical attention if effects persist.
♣ Eye contact-Flush eyes with running water for at least 15 minutes with eyelids held open. Seek specialist advice.
♣ Skin contact-Wash affected skin with soap and mild detergent and large amounts of water.
♣ Ingestion- Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Do not use mouth-to-mouth resuscitation. Seek medical service immediately.

Shipping Information

♠ Proper Shipping Name: Synthetic Magnesium Silicate
♠ UN Number: Not applicable
♠ Hazard Class: Not regulated
♠ Labels: No information available
♠ Packing Group: Not regulated

Please read the MSDS for this chemical before using