Chemical Name1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin
Synonym(s)1,2,3,4,6,7,8-Heptachlorodibenzo[1,4]dioxin | 1,2,3,4,6,7,8-Heptachlorodibenzo[b,e][1,4]dioxin | 1,2,3,4,6,7,8-Heptachlorodibenzodioxin | 1,2,3,4,6,7,8-HpCDD | D 73 | Dibenzo[b,e][1,4]dioxin, 1,2,3,4,6,7,8-heptachloro- | Heptachlorodibenzo-p-dioxin | HpCDD | PCDD 73
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
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 1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin