Toxic substances list: MAPBAP acetate

The substance Methylium, [4-(dimethylamino)phenyl]bis[4-(ethylamino)-3-
methylphenyl]-, acetate, Chemical Abstracts Service Registry Number (CAS RN) 72102-55-7, is commonly known as “MAPBAP acetate”.

MAPBAP acetate is used in Canada as a dye mainly in the production of certain paper products made from mechanical grade pulp such as newsprint.

The risk assessment concluded that the use of MAPBAP acetate may have an immediate or long-term harmful effect on the environment but may not constitute a danger to human life or health.

Therefore, Environment Canada manages the environmental risk with Guidelines that set standards on MAPBAP acetate retention, performance of the effluent treatment system and containment measures for the pulp and paper sector.

Health Canada will manage potential health risk that could arise from any new use of MAPBAP acetate through the Significant New Activity provisions. For more information, please visit the Chemical Substances Website.

Risk Management Strategy

Click on the following link to view strategies and actions recommended to manage risks associated with the substance:

Risk Management Tool (s)

Tool(s) developed to manage risks associated with the substance:

Guidelines for the Reduction of Dyes Released from Pulp and Paper Mills (November 2013)


  • Publication  of the MAPBAP Guidelines : November 30th, 2013
  • Declaration Form :
    1. The latest of the following:
      • May 30th, 2014
      • six months after the initial dye use
    2. when the operator permanently ceases to use the dye
  • First Report: No later than November 30, 2016
  • Annual Report*: Once a year

*An annual report would only be sent if the standards were not respected or if at least one of the dyes subject to these Guidelines were released to the environment or to an effluent treatment system as a result of the storage, handling or disposal of dye for that calendar year.


Publication (past and present) on the substance:


Forest Products and Fisheries Act Division
Environment Canada
Place Vincent Massey
351 St. Joseph Boulevard
Gatineau (Quebec) K1A 0H3
Fax: 819-994-9848

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