US lawMassachusettsRegulations105 CMR — Department of Public Health105 CMR 670.00 — Right to know670.010105 CMR 670.010The Massachusetts Substance ListYear: 2026Length: 11 wordsOfficial source (A) Explanation. The Massachusetts Substance List is contained in 105 CMRPrevious105 CMR 670.005Next105 CMR 670.020