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Magnesium Trisilicate
CAS Number: 14987-04-3 for Anhydrous and 39365-87-2 for hydrate

Molecular Formula: Mg2O8Si3 Anhydrous
Molecular Weight: 260.86 Anhydrous

Magnesium Trisilicate Suppliers
Magnesium Trisilicate

Magnesium Trisilicate USP Grade specifications
2MgO3SiO2xH2O -- (anhydrous) 260.86
Silicic acid (H4Si3O8), magnesium salt (1:2), hydrate.
Magnesium silicate hydrate (Mg2Si3O8xH2O) CAS 39365-87-2
Anhydrous CAS 14987-04-3

Magnesium Trisilicate is a compound of Magnesium Oxide and silicon dioxide with varying proportions of water. It contains not less than 20.0 percent of magnesium oxide (MgO) and not less than 45.0 percent of silicon dioxide (SiO2).

Identification:
A: Mix about 500 mg with 10 mL of 3 N hydrochloric acid, filter, and neutralize the filtrate to litmus paper with 6 N ammonium hydroxide: the neutralized filtrate responds to the tests for Magnesium.
B: Prepare a bead by fusing a few crystals of sodium ammonium phosphate on a platinum loop in the flame of a Bunsen burner. Place the hot, transparent bead in contact with Magnesium Trisilicate, and again fuse: silica floats about in the bead, producing, upon cooling, an opaque bead with a web-like structure.
Water: Weigh accurately about 1 g in a tared platinum crucible provided with a cover. Gradually apply heat to the crucible at first, then strongly ignite to constant weight: it loses between 17.0% and 34.0% of its weight.
Soluble salts: Boil 10.0 g with 150 mL of water for 15 minutes. Cool to room temperature, allow the mixture to stand for 15 minutes, filter with the aid of suction, transfer the filtrate to a 200-mL volumetric flask, dilute with water to volume, and mix. Evaporate 50.0 mL of this solution, representing 2.5 g of the Trisilicate, in a tared platinum dish to dryness, and ignite gently to constant weight: the weight of the residue does not exceed 38.0 mg (1.5%).
Chloride: A 20-mL portion of the diluted filtrate prepared in the test for Soluble salts, representing 1 g of Magnesium Trisilicate, shows no more chloride than corresponds to 0.75 mL of 0.020 N hydrochloric acid (0.055%).
Sulfate: Treat the residue obtained in the test for Soluble salts with 2 mL of hydrofluoric acid, and evaporate on a steam bath to dryness. Mix the residue with water, transfer to a filter, and wash, using approximately 50 mL of water for the complete procedure. Heat the filtrate to boiling, and add 0.1 mL of hydrochloric acid and 5 mL of barium chloride TS. Maintain the mixture near its boiling point for 1 hour, filter, wash the precipitate thoroughly with water, dry, and ignite to constant weight: the weight of the residue does not exceed 30 mg (0.5%).
Free alkali: Add 2 drops of PhPh TS to 20 mL of the diluted filtrate prepared in the test for Soluble salts, representing 1 g of the Trisilicate: if a pink color is produced, not more than 1.0 mL of 0.10 N hydrochloric acid is required to discharge it.
Arsenic: 8 ppm.
Heavy metals: the limit is 0.003%.
Acid-consuming capacity: Weigh accurately about 200 mg into a glass-stoppered, 125-mL conical flask. Add 30.0 mL of 0.1 N hydrochloric acid VS and 20.0 mL of water. Place the flask in a bath maintained at 37 , and shake the mixture occasionally during a period of 4 hours but leave the mixture undisturbed during the last 15 minutes of the heating period. Cool to room temperature. To 25.0 mL of the supernatant add methyl red TS, and titrate the excess acid with 0.1 N sodium hydroxide VS. One g of Magnesium Trisilicate, calculated on the anhydrous basis, consumes not less than 140 mL and not more than 160 mL of 0.10 N hydrochloric acid.
Ratio of SiO2 to MgO: between 2.10 and 2.37.


Magnesium Silicate FCC Food Grade specifications
Synthetic Magnesium Silicate
INS: 553(i) CAS 1343-88-0

DESCRIPTION
Magnesium Silicate occurs as a very fine, white powder free from grittiness. It is a synthetic, usually amorphous form of magnesium silicate in which the molar ratio of magnesium oxide (MgO) to silicon dioxide (SiO2) is approximately 2:5. It is insoluble in water and in alcohol, but is readily decomposed by mineral acids. The pH of a 1:10 slurry is between 7.0 and 10.8.

Function: Anti-caking agent; filter aid.

REQUIREMENTS
Identification:
A. Mix about 500 mg of sample with 10 mL of 2.7 N hydrochloric acid, filter, and neutralize the filtrate to litmus paper with 6 N ammonium hydroxide. The neutralized filtrate gives positive tests for Magnesium.
B. Prepare a bead by fusing a few crystals of sodium ammonium phosphate on a platinum loop in the flame of a Bunsen burner. Place the hot, transparent bead in contact with a sample, and again fuse. Silica floats about in the bead, producing, upon cooling, an opaque bead with a web-like structure.
Assay: Not less than 15.0% of MgO and not less than 67.0% of SiO2, calculated on the ignited basis.
Fluoride: Not more than 10 mg/kg.
Free Alkali (as NaOH): Not more than 1%.
Lead: Not more than 5 mg/kg.
Loss on Drying and Loss on Ignition: Not more than the percentage stated or within the range claimed by the vendor.
Soluble Salts: Not more than 3.0%.

We also supply Magnesium Trisilicate of BP Ph Eur Grade.

Please visit SDS Safety Data Sheet of Magnesium Trisilicate Suppliers.

American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.

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Suppliers and Manufacturers' Representative:
American Molecules - Ammol.org USA
9910 Bent Oak Dr
Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665
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