40 CFR 721.9662 Thieno[3,4-b]-1,4-dioxin, 2,3-dihydro- (9CI) [63 FR 9441, Feb. 25, 1998] https://api.chemreg.net/regulations/gmsds_oct18-1062.pdf/view https://api.chemreg.net/@@site-logo/ChemReg-branding.png 40 CFR 721.9662 Thieno[3,4-b]-1,4-dioxin, 2,3-dihydro- (9CI) [63 FR 9441, Feb. 25, 1998] Loading The Document Viewer requires that you enable Javascript. Download GMSDS Oct18-1062.pdf — 6.103515625 KB