1,2,3,6,7,8-Hexachlorodibenzofuran

Chemical Name1,2,3,6,7,8-Hexachlorodibenzofuran
Synonym(s)1,2,3,6,7,8-HxCDF | 2,3,4,7,8,9-Hexachlorodibenzofuran | Dibenzofuran, 1,2,3,6,7,8-hexachloro- | F 121 | PCDF 121
CASRN57117-44-9
Category MemberN150: Dioxin and dioxin-like compounds
De minimis Limit %*
The de minimis exemption is not available for this chemical
De minimis NotesThe de minimis exemption is not available for this chemical
M,P/OU Threshould (lb)0.1 gram/0.1 gram
Listing TypeChemical category member
Effective Date01-JAN-00
Chemical QualifierNo
MetalNo
Chemical of Special ConcernYes
Per- or Polyfluoroalkyl SubstanceNo

Rulemaking Changes Affecting This Chemical

StatusEffective Reporting YearFR Proposed RuleFR Final Rule
Added to category200062 FR 24887 (5/7/1997)64 FR 58666 (10/29/1999)
Structural image
Structural representation of 1,2,3,6,7,8-Hexachlorodibenzofuran