Magnesium Fluorosilicate, with the chemical formula F6MgSi

Magnesium Fluorosilicate, with the chemical formula F6MgSi, is a white crystalline solid known for its molecular weight of 274.52. It is soluble in water and decomposes at 120°C. This compound is characterized by its rhomboid or needle-like crystal structure and is odorless. It is used in various industrial applications, including as a hardener and waterproofing agent for concrete, as well as in the surface treatment of silica buildings and ceramic manufacturing.

Health hazard identification indicates that Magnesium Fluorosilicate is highly toxic and may be fatal if inhaled, swallowed, or absorbed through the skin. It can cause slight irritation to the skin, eyes, and mucous membranes, and may be slightly toxic if ingested. The compound gives basic aqueous solutions and reacts with acids but does not typically act as an oxidizing or reducing agent.

In terms of safety, Magnesium Fluorosilicate is moderately toxic by ingestion, and when heated to decomposition, it emits toxic vapors of magnesium and fluoride. It is important to avoid any skin contact and be aware that the effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive, and/or toxic gases, and runoff from fire control or dilution water may be corrosive and/or toxic, causing pollution.

Storage and handling of Magnesium Fluorosilicate require double-layer packaging, with an inner polyethylene plastic film bag not less than 0.05mm thick and an outer plastic woven bag. It should be stored in a cool, dry warehouse, away from strong acids such as hydrochloric, sulfuric, and nitric. During transportation, a cover should be provided to prevent rain and moisture, and it should not be stored or transported with food products and seeds due to its toxic nature. The compound is classified under UN number 2853 with hazard class 6.1 and packing group III.