Low Boiling Point Naphthas Group

These substances were identified for action under the Chemicals Management Plan (CMP). The assessment focuses on 27 substances referred to collectively under the CMP as the Low Boiling Point Naphthas (LBPNs) Group. These 27 LBPN substances were divided into 4 subgroups which are outlined in the summary of publications table.

Summary of publications
Substance group Subgrouping (number) Draft assessment Risk management scope Proposed conclusion on section 64 criteria Follow-up activities
Low Boiling Point Naphthas Group C9-C14 hydrocarbon solvents (1)table 1 note a HTML HTML Meet one or more of the criteriatable 1 note b See risk management scope
C9 aromatic solvents (2)table 1 note a
C6-C9 Aliphatic solvents (3)table 1 note a
No consumer use identified (4)table 1 note a None Do not meet None planned at this time
Table 1 Notes
Table 1 Note a

Details on the substance names and Chemical Abstracts Service Registry Numbers (CAS RNs) are available in the synopsis of the assessment.

Return to table 1 note a referrer

Table 1 Note b

The focus of the human health assessment is on the 4 subgroups of LBPNs, which includes the 27 individual LBPN substances identified in the synopsis of the assessment.

Return to table 1 note b referrer

Date Activity
March 2025 Anticipated publication of the final assessment and proposed risk management approach.
March 16, 2024 Publication and start of 60-day public comment period on the Draft Assessment for the Low Boiling Point Naphthas Group and the Risk Management Scope for Low Boiling Point Naphthas Group (LBPNs): Subgroup 1 (C9-C14 Hydrocarbon solvents), Subgroup 2 (C9 Aromatic solvent), and Subgroup 3 (C6-C9 Aliphatic solvents). The related notice was published in the Canada Gazette, Part I: Vol. 158, No. 11.


The exposure and risks associated with the petroleum industry uses (that is, refineries and upgraders) of these 27 LBPN substances are considered to be similar to that of the site-restricted LBPNs and industry-restricted LBPNs that have already been assessed under the Canadian Environmental Protection Act, 1999. Those LBPNs were concluded as not harmful to human health or to the environment. Therefore, the exposures and risks associated with petroleum industry uses were not further considered in the draft assessment.

In addition, there were no identified uses of the subgroup 4 LBPNs in products available to consumers, food packaging materials or incidental additives. Therefore, only non-petroleum industrial uses of these substances were considered in the assessment.

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