Flame Retardants Group

Information sheet

These substances were identified for action under the Chemicals Management Plan (CMP). The screening assessment focuses on 10 substances referred to collectively under the CMP as the Flame Retardants Group.

Summary of publications
Substance group Subgroup CAS RN Common name and acronym DSL name Draft screening assessment Risk management scope Proposed conclusion on section 64 criteria Follow-up activities
Flame Retardants Group Alkyl organophosphate 78-40-0Footnote b Triethylphosphate; Triethyl Phosphate (TEP) Phosphoric acid, triethyl ester HTML HTML Meets one or more of the criteria Refer to risk management scope
Alkyl organophosphate 78-42-2Footnote b Tris(2-ethylhexyl) phosphate (TEHP) Phosphoric acid, tris(2-ethylhexyl) ester None Does not meet None planned at this time
Alkyl organophosphate 78-51-3 Tris(2-butoxethyl) phosphate (TBOEP) ethanol, 2-butoxy-, phosphate (3:1) Under consideration
Alkyl organophosphate 298-07-7Footnote b Bis(2-ethylhexyl) phosphate; bis (2-ethylhexyl) hydrogen phosphate (BEHP) Phosphoric acid, bis(2-ethylhexyl) ester None planned at this time
Aryl organophosphate 115-86-6Footnote a Triphenyl phosphate (TPHP) Phosphoric acid, triphenyl ester HTML Meets one or more of the criteria Refer to risk management scope
Aryl organophosphate 29761-21-5 Isodecyl diphenyl phosphate (IDDP) Phosphoric acid, isodecyl diphenyl ester
Aryl organophosphate 56803-37-3 Tert-butylphenyl diphenyl phosphate (BPDP) Phosphoric acid, (1,1-dimethylethyl)phenyl diphenyl ester
Aryl organophosphate 65652-41-7Footnote a Bis(tert-butylphenyl) phenyl phosphate (BDMEPPP) Phosphoric acid, bis[(1,1-dimethylethyl)phenyl] phenyl ester
Aryl organophosphate 68937-41-7Footnote c Isopropylated triphenyl phosphate (IPPP) Phenol, isopropylated, phosphate (3:1)
n/a 58965-66-5Footnote a Tetradecabromo-1,4-diphenoxybenzene; perbromo-1,4-diphenoxybenzene (TDBDPB) Benzene, 1,2,4,5-tetrabromo-3,6-bis(pentabromophenoxy)- None Does not meet Under consideration
Footnote a

This substance did not meet categorization criteria, but was included in this assessment because it was determined to be a priority as a result of the approach described for Identification of Risk Assessment Priorities.

Return to footnote a referrer

Footnote b

This CAS RN is a UVCB (unknown or variable composition, complex reaction products, or biological materials).

Return to footnote b referrer

Footnote c

This substance was not identified under subsection 73(1) of the Canadian Environmental Protection Act, 1999 (CEPA 1999), but was included in this assessment as it was considered a priority on the basis of other human health concerns.

Return to footnote c referrer

Date Activity
November 2023 Anticipated publication of the final screening assessment and proposed risk management approach.
June 24, 2023 Publication in Canada Gazette, Part I, of a notice under section 71 of CEPA 1999.
November 6, 2021 Publication and start of 60-day public comment period on the Draft Screening Assessment for the Flame Retardants Group (including follow-up activities for TBOEP and TDBDPB) and the Risk Management Scope for TPHP, BPDP, BDMEPPP, IDDP, IPPP and TEP. The related notice was published in the Canada Gazette, Part I: Vol. 155, No. 45.

Information gathering

Section 71 CMP 2023

In June 2023, a notice was published in the Canada Gazette, Part I: Vol. 157, No. 25 – June 24, 2023 under section 71 of CEPA 1999. This notice applies to IPPP (CAS RN 68937-41-7) and TEP (CAS RN 78-40-0). More information is available on the Information gathering with respect to certain substances under the Chemicals Management Plan web page.


Three other substances were identified as being a part of the Flame Retardants Group at the outset of the third phase of the CMP. These substances were subsequently determined to be of low concern to both human health and the environment, through a separate approach. The conclusions for CAS RNs 26446-73-1, 68527-01-5 and 68527-02-6 are provided in the Final Screening Assessment for the Rapid Screening of Substances with Limited General Population Exposure.

Page details

Date modified: