Chemical Detail

Chemical Name1,2,3,4,7,8,9-Heptachlorodibenzofuran
Synonym(s)1,2,3,4,7,8,9-HpCDF | Dibenzofuran, 1,2,3,4,7,8,9-heptachloro- | F 134 | PCDF 134
CASRN55673-89-7
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 Date2000-01-01
Chemical QualifierNo
MetalNo
Chemical of Special ConcernYes
Per- or Polyfluoroalkyl SubstanceNo
Structural image
Structural representation of 1,2,3,4,7,8,9-Heptachlorodibenzofuran

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)