Prior to inclusion in GSA’s library of procedures, documents are reviewed by one or more qualified preservation specialists for general consistency with the Secretary of Interior Standards for rehabilitating historic buildings as understood at the time the procedure is added to the library. All specifications require project-specific editing and professional judgement regarding the applicability of a procedure to a particular building, project or location. References to products and suppliers are to serve as a general guideline and do not constitute a federal endorsement or determination that a product or method is the best or most current alternative, remains available, or is compliant with current environmental regulations and safety standards. The library of procedures is intended to serve as a resource, not a substitute, for specification development by a qualified preservation professional.
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We’ve reviewed these procedures for general consistency with federal standards for rehabilitating historic buildings and provide them only as a reference. Specifications should only be applied under the guidance of a qualified preservation professional who can assess the applicability of a procedure to a particular building, project or location. References to products and suppliers serve as general guidelines and do not constitute a federal endorsement nor a determination that a product or method is the best alternative or compliant with current environmental regulations and safety standards.
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Magnesium Carbonate, also known as Magnesium Carbonate Basic Pentahydrate, Magnesium Hydroxycarbonate Pentahydrate, Magnesium Hydroxy Carbonate Pentahydrate, and Carbonic Acid, is often available as basic pentahydrate of Magnesium(2+) Carbonate having the chemical formula C4H12Mg5O19 or (MgCo3)4-Mg(OH)2-5H2O. It appears as white odorless air/moisture sensitive powder and is insoluble in water at ambient conditions. Upon heating, it may release Carbon Oxides or other toxic vapors as the decomposition products. It’s a key source of Magnesium that can easily be converted to other Magnesium compounds, such as the oxide by heating (calcination). Lab grade chemicals possess reasonable purity but do not comply with any official standard for quality or purity like the ACS Grade, the USP Grade, or the FCC Grade. The Lab Grade is also known as Laboratory Reagent (LR) and Chemically Pure (CP). Lab Alley’s Magnesium Carbonate, Lab Grade is recommended for educational institutes, research labs, and commercial applications.
Please contact us to request a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for Magnesium Carbonate, Lab Grade
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