# The Chemicals (Hazard Information and Packaging) Regulations 1993, Paragraph 8: Classification by the conventional method as harmful


The following preparations shall be regarded as harmful—
(a) owing to their acute lethal effects, preparations containing one or more substances classified or regarded as very toxic, toxic or harmful in 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 1 of Part II of this Schedule (Table I or Table IA) where the substance or substances do not appear in the approved supply list or appear in it without concentration limits;
(b) owing to their acute lethal effects, preparations containing more than one substance classified or regarded as very toxic, toxic or harmful in individual concentrations not exceeding the limits specified in the approved supply list or in paragraph 1 of Part II of this Schedule (Table I or Table IA) if the sum of the quotients obtained by dividing the percentage weight of each very toxic, toxic or harmful substance in the preparation by the harmful limit specified for that substance is 1 or more, i.e.—
∑(PT+LXn+PTLXn+PXnLXn)≥1 where—
PT+ the percentage by weight of each very toxic substance in the preparation,
PT the percentage by weight of each toxic substance in the preparation,
PXn the percentage by weight of each harmful substance in the preparation,
LXn the harmful limit specified for each very toxic, toxic or harmful substance expressed as a percentage;
(c) owing to their non-lethal irreversible effects after a single exposure, preparations containing one or more substances dangerous for supply which produce such effects 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 2 of Part II of this Schedule (Table II or Table IIA) where the substance or substances do not appear in the approved supply list or appear in it without concentration limits;
(d) owing to their long-term effects after repeated or prolonged exposure, preparations containing one or more substances dangerous for supply that produce such effects 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 3 of Part II of this Schedule (Table III or Table IIIA) where the substance or substances do not appear in the approved supply list or appear in it without concentration limits;
(e) owing to their sensitizing effects by inhalation, preparations containing at least one substance dangerous for supply to which is assigned the risk phrase R42 (may cause sensitization by inhalation) that produces such effects 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 5 of Part II of this Schedule (Table V or Table VA in the case of gases) where the substance or substances do not appear in the approved supply list or appear in it without concentration limits.

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Source: https://www.legislation.gov.uk/uksi/1993/1746/schedule/4/paragraph/8 (the official version)
Page: https://openlegislation.uk/chemicals-hazard-information-and-packaging-regulations-1993/schedule-4/paragraph-8
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.