Magnesium Aluminium Silicate Hydrate
General Information:
The MgO-SiO2-H2O system has been reported to have potential application for radioactive waste encapsulation. Brew and Glasser have prepared magnesium silicate hydrate (MSH) gel by mixing Na2SiO3∙5H2O and Mg(NO3)2∙6H2O solutions at 20–25 °C and studied the alkali (K, Cs) sorption potential of the resultant synthetic gels. The reduced pH of MSH formed by MgO-SiO2-H2O means this system has potential to be used for the encapsulation of mixed Aluminum and Mg(OH)2-rich (Magnox) wastes resulting from the nuclear industry .The high alkaline pore solution in traditional radioactive waste repositories can result in a series of alterative reaction products and physicochemical changes over extended periods of time (such as the dissolution of clays).
MSH gel is the main hydration product of the MgO-SiO2-H2O system. Despite its amorphous nature and lack of long range order, its structure at the local scale can be expected to bear resemblance to crystalline magnesium silicates. There are two different crystal structure models for natural
magnesium phyllosilicates, the serpentine-like model.
Nomenclature:
- Molecular Formula: Al2Mg2O15Si5,xH2O
- Molecular Weight: 482.99
Physical Property:
- Physical state: White fine powder, odorless and tasteless.
- Solubility: Practically insoluble in water & in ethanol. Soluble in mineral acids.
- PH: 9.0 – 10.0 (5 % Aqueous solution)
Application & Use:
Used as an Antacid Raw material in a specific antacid formulations, Ceramics, Suspending Agent, Thickning agent etc.
Advantage & Disadvantage:
Magnesium Aluminium Silicate Hydrate is Pharmaceutical aid, Slightly hazardous in case of skin contact (irritant), of eye contact (irritant), of ingestion, of inhalation.
Shelf Life:
- Expiry: 5 Years after date of manufacture
Storage Recommendations:
Store Protected From Moisture
Packaging:
20 kg net weight packed in LDPE Liner follow by HDPE Woven Bag.