Molar mass of common formulas

While in the studio there is no practical difference between the following measurements, ideally all software dealing with ceramics calculation should standardize on a specific set of molecular masses for common formulas in order to rule out inconsistencies.

References:

Comparison of values in various publications

Oxide	Name	PubChem	CRC Handbook	Digitalfire	Glazy v1
Al₂O₃	Aluminum Oxide	101.96	101.961	102.000	101.96137
B₂O₃	Boron oxide	69.617	69.620	69.600	69.6217
BaO	Barium Oxide	153.326	153.326	153.300	153.3271
BeO	Berylium oxide		25.011		25.01158
CaO	Calcium Oxide	56.077	56.077	56.100	56.0778
CdO	Cadmium oxide		128.410	128.410	128.4104
CoO	Cobalt(II) Oxide	74.932	74.932	74.920	74.93263
Cr₂O₃	Chromium(III) Oxide	151.989	151.990	152.000	151.99061
Cu₂O	Copper(I) Oxide	143.091	143.091	143.000	143.0914
CuO	Copper(II) Oxide	79.545	79.545	79.540	79.5454
Fe₂O₃	Iron(III) Oxide	159.687	159.688	160.000	159.6887
FeO	Iron(II) Oxide	71.844	71.844	81.800	71.8446
K₂O	Potassium oxide	n/a	94.196	94.200	94.19605
Li₂O	Lithium Oxide	29.879	29.881	29.800	29.8818
MgO	Magnesium Oxide	40.304	40.304	40.300	40.30449
MnO	Manganese(II) oxide	70.937	70.937	70.900	70.93748
MnO₂	Manganese(IV) oxide	86.936	86.937	86.900	86.93691
Na₂O	Sodium oxide	61.979	61.979	62.000	61.97897
NiO	Nickel(II) oxide	74.692	74.692	74.700	74.69287
P₂O₅	Phosphorus(V) oxide	141.943	141.945	141.900	141.94467
PbO	Lead(II) oxide	223.199	223.2	223.200	223.2094
SiO₂	Silicon dioxide	60.083	60.085	60.100	60.08439
SnO₂	Tin(IV) oxide	150.708	150.709	150.710	150.7096
SrO	Strontium oxide	103.619	103.62	103.600	103.6204
TiO₂	Titanium(IV) oxide	79.865	79.866	79.900	79.8660
V₂O₅	Vanadium(V) oxide	181.878	181.880	181.900	181.8800
ZnO	Zinc Oxide	81.379	81.39	81.400	81.3814
ZrO	Zirconium Oxide			107.200	107.2234
ZrO₂	Zirconium(IV) oxide	123.222	123.223	123.220	123.2231

Standard CRC values

Values in the CRC handbook:

Oxide	CRC Handbook
Al₂O₃	101.961
B₂O₃	69.620
BaO	153.326
BeO	25.011
CaO	56.077
CdO	128.410
CoO	74.932
Cr₂O₃	151.990
Cu₂O	143.091
CuO	79.545
Fe₂O₃	159.688
FeO	71.844
K₂O	94.196
Li₂O	29.881
MgO	40.304
MnO	70.937
MnO₂	86.937
Na₂O	61.979
NiO	74.692
P₂O₅	141.945
PbO	223.2
SiO₂	60.085
SnO₂	150.709
SrO	103.62
TiO₂	79.866
V₂O₅	181.880
ZnO	81.39
ZrO
ZrO₂	123.223

Standard List Ordering of Oxides


SiO₂ // Glass

Al₂O₃ // Intermediate
B₂O₃ // Glass

// Alkaline Earths
MgO // Flux
CaO // Flux
SrO // Flux
BaO // Flux

// Metallic oxide fluxes
ZnO // Flux
PbO // Flux

// Alkali Metals
Li₂O // Flux
Na₂O // Flux
K₂O // Flux

BeO // Other

P₂O₅ // Glass
TiO₂ // Glass

SnO₂ // Opacifier
ZrO // Opacifier
ZrO₂ // Opacifier

// Colorants
V₂O₅
Cr₂O₃
MnO
MnO₂
FeO
Fe₂O₃
CoO
NiO
CuO
Cu₂O
CdO

// Other
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