Summary of Public Comments on Butylbenzylphthalate (BBP)
Environmental Sections
Comments on the environmental sections of the CEPA PSL Draft Assessment Report on BBP were provided by:
- Gerald T. Coyle, Senior Environmental Specialist, Solutia Inc.
Comments and responses are summarized below by Environment Canada. (All were made to the English version of the report).
| Comment | Response |
|---|---|
| Presence of BBP in automobile exhaust is unlikely (Section 2.2.2.2, 7th paragraph)(1) | Delete first sentence as quantitative statements are made later |
| Presence of BBP in nail polish is unlikely (Section 2.2.2.2, 8th paragraph)(1) | Change statement to "BBP may also be used as a component…" |
| Half-life in water should be <2 days (Section 2.3.1.2, 1st paragraph)(1) | Give half-life as <2 days, delete Howard et al. (1991) citation, leave in cold water caveat |
| Rewording suggested for last sentence, 1st paragraph, Section 2.3.1.5(1) | Rewrite sentence as "In this study,…residue, and there was insufficient tissue to further characterize the remainder." |
| Data presented indicating vapour pressure should be 0.00004 Pa @ 20°C and 0.0008 Pa @ 25°C (Section 2.3.1.6)(1) | Add these values to the physical/chemical data in the Supporting Document (cite Solutia Inc. 1999 unpublished data) |
| Half-life values are too long (Section 2.3.1.6)(1) | Leave as is. Footnote already explains that persistence values are conservative |
| "LOECpelagic = 0.02 ´ 2000 L/kg 170 mg/L" should be "LOECbenthic =…" (Section 2.4.1.2)(1) | Make correction |
| A caveat should be added regarding the use of the Hardwicket al. (1984) study using dibutyl phthalate (Section 2.4.1.4, 1st paragraph)(1) | Leave as is. A caveat regarding the use of studies on dibutyl phthalate is presented in Section 3.1.2.6 |
| Include in Section 2.4.1.6 the results of 1998-1999 studies (submitted) that show BBP not an endocrine disrupter in fish(1) | Add summary of study results to Section 2.4.1.6 |
Health-related Sections
Comments on the health-related sections of the CEPA PSL Draft Assessment Report on BBP were provided by:
- Gerald T. Coyle, Senior Environmental Specialist, Solutia Inc.
Comments and responses are summarized below by Health Canada. (All were made to the English version of the report).
| Comment | Response |
|---|---|
| Attention was drawn to a supposed contradiction in reporting concentrations of BBP, with respect to the reported limit of detection (Section 2.3.2.6, third paragraph) | The reported concentrations were verified and are accurate. |
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