Aromatic azo and benzidine-based substances are among those identified as priorities.Help on accessing alternative formats, such as Portable Document Format (PDF), Microsoft Word and PowerPoint (PPT) files, can be obtained in the alternate format help section.
The Aromatic azo and benzidine-based substances are among those identified as priorities.
| Subgroup | CAS RN | Chemical Substances | Draft Screening Assessment | Proposed Risk Management Scope |
|---|---|---|---|---|
Notes de bas de page du Tableau 1
|
||||
| Diarylide Yellow Pigments | 5102-83-0 | Pigment Yellow 13 | HTML |
None |
| Pigment Yellow 83 | ||||
| 5567-15-7 | Pigment Yellow 12 | |||
| 6358-85-6 | ||||
| 78952-70-2Tableau 1 note de bas de page 1 | CPAOBP | |||
| 90268-24-9 | Pigment Yellow 176 | |||
For the subgroup 'Diarylide Pigments' of the Aromatic Azo and Benzidine-based Substance Grouping, the screening assessment is specific to five substances (Pigment Yellow 12, Pigment Yellow 13, Pigment Yellow 83, Pigment Yellow 176 and CPAOBP). Two substances in this subgroup, BPAOPB (CAS RN 7147-42-4) and Pigment Brown 22 (CAS RN 29398-96-7), have been previously assessed by the Government of Canada under the Challenge Initiative of the Chemicals Management Plan. Pigment Brown 22 is not included in this draft screening assessment, as no new information was received since its assessment in 2010 and because it does not inform the assessment of the five diarylide yellow pigments. BPAOPB is used as an analogue in this screening assessment report due to its structural similarity to the five diarylide yellow pigments. Information related to BPAOPB is used to inform this draft screening assessment report.
| Subgroup | CAS RN | Chemical Substances | Draft Screening Assessment | Proposed Risk Management Scope |
|---|---|---|---|---|
Table 2 footnotes
|
||||
| Benzidine-based Acid Dyes (9 substances) |
3701-40-4Table 2 footnote 1 | Acid Red 99 | HTML |
None |
| 6459-94-5 | Acid Red 114 | |||
| 6470-20-8 | Acid Orange 56 | |||
| 6548-30-7 | Acid Red 128 | |||
| 68318-35-4 | Acid Black 209 | |||
| 68400-36-2Table 2 footnote 1 | NAAHD | |||
| 83221-63-0 | NAADD | |||
| 89923-60-4 | BADB | |||
| 10169-02-5 | Acid Red 97 | |||
| Benzidine-based Direct Dyes (24 substances) |
72-57-1 | Direct Blue 14 | HTML |
None |
| 573-58-0 | Direct Red 28 | |||
| 992-59-6 | Direct Red 2 | |||
| 2150-54-1 | Direct Blue 25 | |||
| 2429-71-2 | Direct Blue 8 | |||
| 2429-74-5 | Direct Blue 15 | |||
| 6420-06-0Table 2 footnote 1 | Direct Violet 28 | |||
| 6420-22-0 | Direct Blue 295 | |||
| 6449-35-0 | Direct Blue 151 | |||
| 6548-29-4 | Direct Red 46 | |||
| 6655-95-4 | Direct Blue 158 | |||
| 16071-86-6 | Direct Brown 95 | |||
| 67923-89-1 | NAAH•3Li | |||
| 70210-28-5 | BABHS | |||
| 71215-83-3 | BAHSD | |||
| 71550-22-6 | NADB•4Li | |||
| 72252-59-6 | BDAAH | |||
| 75659-72-2 | NADB•Li•3Na | |||
| 75659-73-3 | NADB•2Li•2Na | |||
| 75673-18-6 | NAAH•Li•2Na | |||
| 75673-19-7 | NAAH•2Li•Na | |||
| 75673-34-6 | NADB•2Li | |||
| 75673-35-7 | NADB•Li•Na | |||
| 75752-17-9 | NADB•3Li•Na | |||
| Benzidine-based Precursors (2 substances) |
91-92-9 | Naphthol AS-BR | HTML |
None |
| 93940-21-7 | TCDB | |||
| Benzidine-based Cationic Indicators (2 substances) |
298-83-9 | TDBPD | HTML |
None |
| 1871-22-3 | TDBD | |||
| Benzidine Derivatives (5 substances) |
91-97-4 | TODI | HTML |
None |
| 119-90-4 | 3,3′-DMOB | |||
| 119-93-7 | 3,3′-DMB | |||
| 366-29-0 | 4N-TMB | |||
| 612-82-8 | 3,3′-DMB•2HCl | |||
Five subgroups are included in this draft screening assessment report; Benzidine-based Acid Dyes (10 substances), Benzidine-based Direct Dyes (25 substances), Benzidine-based Precursors (2 substances), Benzidine-baseed Cationic Indicators (2 substances), and Benzidine derivatives (5 substances). Two substances related to this subgroup, Acid Red 111 (CAS RN 6358-57-2) and Direct Black 38 (CAS RN 1937-37-7), have been previously assessed under the Challenge Initiative of the Chemical Management Plan. It was then concluded that both Acid Red 111 and Direct Black 38 did not pose a risk to the environment or to human health as set out in section 64 of CEPA 1999. These conclusions remain unchanged. Information related to these substances was used to inform this draft screening assessment report.
| Date | Activity |
|---|---|
| March 2015 | Publication in Canada Gazette of final assessment decisions under subsection 77(6) of CEPA 1999. |
| June 15, 2013 | Publication in Canada Gazette of proposed assessment decisions under subsection 77(1) of CEPA 1999, and start of 60-day public comment period on the draft screening assessments. |
| April 16, 2012 | Deadline for submission of additional information by interested stakeholders, including on the extent and nature of the management/stewardship. |
In June 2013, the draft screening assessment reports were released and the related Notices were published in the Canada Gazette, Part I: Vol. 147, No. 25 - June 15, 2013 ( PDF Version - 2,106 K). There are no risk management scope documents associated with this release.
| Type of Response | Approximate Number |
|---|---|
| Mandatory section 71 Notice | Information was received for 4 substances in this Package (46 submissions were received for this Grouping) |
| Declaration of Stakeholder Interest | Stakeholder interest was expressed for all substances in this Package (49 responses were received for this Grouping) |
| Voluntary Data Submissions (for example, studies, additional information) | Voluntary information was received for all substances in this Package (38 submissions were received for this Grouping) |
Information collected through Mandatory Information Gathering (Section 71 Notice) informed the risk assessment and risk management for the first set of Aromatic Azo and Benzidine-based Substance Grouping. Information provided to Environment Canada and Health Canada under previous initiatives was also taken into consideration.