Section 7 Assessment of mixtures containing unassessed chemicals

  7.1 This section deals with the mixtures defined in 3.1.4, i.e. those containing one or more components, forming more than 3% by weight of the mixture, which have not yet been assessed by IMO and therefore are not listed in either chapters 17 and 18 of the IBC Code, or the MEPC circular mentioned in 2.6.

  7.2 There are two alternative ways of assessing these mixtures:

• .1 If sufficient data are available on the mixture as a whole, it should be assessed as if it were a pure or technically pure chemical, as shown in 4.3 to 4.6 and 4.8 to 4.13.

• .2 If sufficient data on the mixture as a whole are not available, the producing or shipping country Administration should first provisionally assess each unassessed component according to section 4 and then assess the mixture by calculation, as shown in 6.2 to 6.6.

  7.3 After provisional assessment by tripartite agreement, pollutant-only mixtures containing unassessed components will be shipped under one of the 18 "Noxious (or non-noxious) liquid, n.o.s." generic entries to the IBC Code, without the need for an amendment sheet to the ship's Certificate of Fitness and P & A Manual. Such an amendment is instead required for mixtures with safety hazards (see 3.5).

  7.4 Either the proposing Administration or the manufacturer will forward to GESAMP the available data on the mixture as a whole in the case of 7.2.1 or on each individual unassessed component in the case of 7.2.2, in order to start the development of the respective hazard profiles. This should be done as soon as possible, using the format reproduced in annex 8.