MISSISSAUGA, Ontario - Imports of phthalo green, a very popular ink in the packaging and printing business, have been halted because of trace levels of the banned chemical hexachlorobenzene (HCB), according to the Canadian Plastics Industry Association.
Pigment manufacturers say the ink contains residual HCB levels that exceed the allowable limit of 20 parts per billion set out in the Prohibition of Certain Toxic Substances Regulation, 2003 (SOR/203-99), made under the federal Canadian Environmental Protection Act, 1999.