Light Magnesium Carbonate C2FD

Alternate Names: MgCO₃

Oxide	Analysis	Formula
MgO	42.50%	1.00
CO2	56.50%	n/a
SO3	0.15%	n/a
Oxide Weight		40.30
Formula Weight		92.96

Notes

A white powder, odourless, practically insoluble in water. It dissolves in dilute acids with a strong effervescence. It is made by decarbonizing Magnesite.

Chlorides (Cl): 0.07%
Sulphate (SO₄): 0.3%
Arsenic (As): 2ppm
Calcium (Ca): 0.75%
Iron (Fe): 400ppm
Heavy Metals: 20ppm

Apparent volume: 120-170 ml/15g

Related Information

Links

URLs	http://mineral.galleries.com/minerals/carbonat/hydromag/hydromag.htm The Mineral Hydromagnesite
Materials	Light Magnesium Carbonate A refractory feather-light white powder used as a source of MgO and matting agent in ceramic glazes
Typecodes	Flux Source Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.

By Tony Hansen
Follow me on

Got a Question?

Buy me a coffee and we can talk