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The Chemicals (Hazard Information and Packaging) Regulations 1993

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Classification by the conventional method as corrosive

10.  The following preparations shall also be regarded as corrosive—

(a)preparations containing one or more substances classified or regarded as corrosive to which is assigned the risk phrase R35 or R34 (causes burns) in individual concentrations exceeding—

(i)either the concentration specified in the approved supply list for the substance or substances under consideration, or

(ii)the concentration specified in paragraph 4 of Part II of this Schedule (Table IV or Table IVA) where the substance or substances do not appear in the approved supply list or appear in it without concentration limits;

(b)preparations containing more than one substance classified or regarded as corrosive to which is assigned the risk phrase R35 or R34 in individual concentrations not exceeding the limits specified either in the approved supply list or in paragraph 4 of Part II of this Schedule (Table IV or Table IVA) if the sum of the quotients obtained by dividing the percentage weight of each corrosive substance in the preparation by the corrosive (R34) limit specified for that substance is 1 or more, i.e.—

where—

  • PC.R35 the percentage by weight of each corrosive substance to which is assigned the risk phrase R35 in the preparation,

  • PC.R34 the percentage by weight of each corrosive substance to which is assigned the risk phrase R34 in the preparation,

  • LC.R34 the corrosive (R34) limit specified for each corrosive substance to which is assigned the risk phrase R35 or R34 expressed as a percentage by weight.

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