Magnesium carbonate, Mg CO3 (archaic name magnesia alba), is an inorganic salt that is a white solid.Several hydrated and basic forms of magnesium carbonate also exist as minerals.orms [edit]. The most common magnesium carbonate forms are the anhydrous salt called magnesite (MgCO 3) and the di, tri, and pentahydrates known as barringtonite (MgCO 3 Â·2 H 2 O), nesquehonite (MgCO 3 Â·3 H 2 O), and lansfordite (MgCO 3 Â·5 H 2 O), respectively.
Reaction type: Nucleophilic Substitution (SN1 or SN2). Summary: 1  When treated with HBr or HCl alcohols typically undergo a nucleophilic substitution reaction to generate an alkyl halide and water.eaction of Alcohols with other Halogenating agents (SOCl2, PX3). Reaction type: Nucleophilic Substitution (SN1 or SN2). Summary: 1  Alcohols can also be converted to alkyl chlorides using thionyl chloride, SOCl2, or phosphorous trichloride, PCl3.
Alkylation. Alkylation is the transfer of an alkyl group from one molecule to another. The alkyl group may be transferred as an alkyl carbocation, a free radical, a carbanion or a carbene. Alkylating agents are widely used in chemistry because the alkyl group is probably the most common group encountered in organic molecules.