Code of Federal Regulations > Title 40 > Chapter I > Part 98 > Subpart N > Appendix - Table N-1 to Subpart N of Part 98—CO2 Emission Factors for Carbonate-Based Raw Materials

Regulations last checked for updates: Feb 21, 2025

Title 40 - Protection of Environment last revised: Nov 21, 2025

Appendix - Table N-1 to Subpart N of Part 98—CO2 Emission Factors for Carbonate-Based Raw Materials

Carbonate-based raw material—mineral	CO2 emission factor ^a
Limestone—CaCO3	0.440
Dolomite—CaMg(CO3)2	0.477
Sodium carbonate/soda ash—Na2CO3	0.415
Barium carbonate—BaCO3	0.223
Potassium carbonate—K2CO3	0.318
Lithium carbonate (Li2CO3)	0.596
Strontium carbonate (SrCO3)	0.298

^a Emission factors in units of metric tons of CO2 emitted per metric ton of carbonate-based raw material charged to the furnace.

[74 FR 56374, Oct. 30, 2009, as amended at 75 FR 66462 , Oct. 28, 2010]

authority: 42 U.S.C. 7401-7671q.

source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.