CFR › Title 40 › Part 98 › Table S-1 to Subpart S of Part 9840 CFR Part 98, Table S-1Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkVariableStoichiometric ratioSRCaO0.7848SRMgO1.0918