Agent Name

Magnesium carbonate hydroxide

Alternative Name

Magnesium carbonate basic

CAS Number

39409-82-0

Formula

C-H2-O3.H2-Mg-O2.x-H2-O.Mg

Major Category

Metals

Synonyms

Carbonic acid, magnesium salt (1:1), mixt. with magnesium hydroxide (Mg(OH)2), hydrate; Magnesium carbonate basic; [ChemIDplus] Marinco C; [Merck Index] Carbonic acid, magnesium salt (1:1), mixt. with magnesium hydroxide; [RTECS] Magnesium carbonate hydrate; [Alfa Aesar MSDS]

Category

Metals, Inorganic Compounds

Description

White odorless solid; [Merck Index] White odorless powder; [Alfa Aesar MSDS]

Sources/Uses

Magnesite and lansfordite are examples of magnesium carbonate minerals; Used for fireproofing, heat insulating, filtrating, and to make effervescent magnesium citrate, mineral waters, pigments, and paper; Also used in tooth powders, face powders, polishing compounds, rubber fillers, antacids, and cathartics; [Merck Index] Used as a flavoring agent, anticaking agent, drying agent, formulation aid, humectant, lubricant or release agent, nutritive supplement, pH control agent, and processing aid for foods; [FDA]

Comments

Usually a basic carbonate with an approximate formula of (MgCO3)4.Mg(OH)2.5H2O; [Merck Index] May cause irritation; [Alfa Aesar MSDS] See "Magnesite."

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