4APolymer of low concern—number average molecular weight greater than or equal to 1,000 and less than 10,000 (Act s 5)

4A Polymer of low concern—number average molecular weight greater than or equal to 1,000 and less than 10,000 (Act s 5)

(1) For the purposes of subparagraph (a)(i) of the definition of polymer of low concern in subsection 5(1) of the Act, the characteristics relating to weight for a polymer that has a number average molecular weight that is greater than or equal to 1,000, but less than 10,000, are set out in this regulation. General (2) The polymer must: (a) have less than 10% by mass of molecules with molecular weight that is less than 500; and (b) have less than 25% by mass of molecules with molecular weight that is less than 1,000. Polymers that include moderate concern reactive functional groups and do not include high concern reactive functional groups (3) In addition to the characteristics mentioned in subregulation (2), if the polymer includes moderate concern reactive functional groups, and does not include high concern reactive functional groups, the polymer must have a combined functional group equivalent weight of at least 1,000. (4) In calculating the weight mentioned in subregulation (3), all moderate concern reactive functional groups included in the polymer must be taken into account. Polymers that include high concern reactive functional groups (5) In addition to the characteristics mentioned in subregulation (2), if the polymer includes high concern reactive functional groups, the polymer must have a combined functional group equivalent weight of at least 5,000. (6) In calculating the weight mentioned in subregulation (5), the following must be taken into account: (a) all moderate concern reactive functional groups included in the polymer; (b) all high concern reactive functional groups included in the polymer.