# The Chemicals (Hazard Information and Packaging for Supply) Regulations 1994, Paragraph 5.1: Other than gaseous preparations


Substances that produce such effects are classified as sensitizing and assigned:
the symbol Xn and phrase R42 if this effect can be produced by inhalation,
the symbol Xi and phrase R43 if this effect can be produced through contact with the skin,
the symbol Xn and phrase R42/43 if this effect can be produced by inhalation and through contact with the skin.
The individual concentration limits specified in Table V determine, when appropriate, the classification of the preparation.
TABLE V
Classification of the substance
Classification of the preparation
Sensitizing with R42
Sensitizing with R43
Sensitizing with R42
concentration > 1% R42 obligatory
Sensitizing with R43
concentration >1% R43 obligatory
Sensitizing with R42/43
concentration > 1% R42/43 obligatory

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Source: https://www.legislation.gov.uk/uksi/1994/3247/schedule/3/paragraph/5.1 (the official version)
Page: https://openlegislation.uk/chemicals-hazard-information-and-packaging-for-supply-regulations-1994/schedule-3/paragraph-5.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.