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Package 1 of the Aromatic Azo and Benzidine-based Substance Grouping

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 Next link will take you to another Web site Aromatic azo and benzidine-based substances are among those identified as priorities.

Summary of Publications for Package 1

Pigments - Package 1
Subgroup CAS RN Chemical Substances Draft Screening Assessment Proposed Risk Management Scope

Notes de bas de page du Tableau 1

Tableau 1 note de bas de page 1

This substance was also the focus of an assessment in the Final screening assessment report on 145 persitent bioaccumulative and inherently toxic substances.

Retour à la référence 1 de la note de bas de page du tableau 1

Diarylide Yellow Pigments 5102-83-0 Pigment Yellow 13 Next link will take you to another Web site 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.

Dyes, Precursors, Indicators, Derivatives- Package 1
Subgroup CAS RN Chemical Substances Draft Screening Assessment Proposed Risk Management Scope

Table 2 footnotes

Table 2 footnote 1

This substance was also the focus of an assessment in the Final screening assessment report on 145 persitent bioaccumulative and inherently toxic substances.

Return to table 2 footnote 1 referrer

Benzidine-based Acid Dyes
(9 substances)
3701-40-4Table 2 footnote 1 Acid Red 99 Next link will take you to another Web site 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 Next link will take you to another Web site 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 Next link will take you to another Web site HTML None
93940-21-7 TCDB
Benzidine-based Cationic Indicators
(2 substances)
298-83-9 TDBPD Next link will take you to another Web site HTML None
1871-22-3 TDBD
Benzidine Derivatives
(5 substances)
91-97-4 TODI Next link will take you to another Web site 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.

Timelines
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.

Draft Screening Assessment Reports

In June 2013, the draft screening assessment reports were released and the related Notices were published in the Next link will take you to another Web site Canada Gazette, Part I: Vol. 147, No. 25 - June 15, 2013  (Next link will take you to another Web site PDF Version - 2,106 K). There are no risk management scope documents associated with this release.

Submissions Received for Package 1
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.