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Chemicals (Hazard Information and Packaging) Regulations (Northern Ireland) 1993
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Corrosive and irritant effects
4.—(1) Solid and liquid preparations: For substances that produce corrosive effects (R34, R35) or irritant effects (R36, R37, R38, R41), the individual concentration limits specified in Table IV determine, when appropriate, the classification of solid and liquid preparations and shall determine the particular risk phrases which shall be assigned to them.
TABLE IV
| Classification of the substance and/or relevant standard risk phrase | Classification of the preparation and standard risk phrase | |||
|---|---|---|---|---|
| At least C with R35 | At least C with R34 | At least Xi with R41 | At least Xi with R36, R37 or R38 | |
| At least C with R35 | conc. ≥ 10% R35 obligatory | 5% ≤ conc. < 10% R34 obligatory | 1% ≤ conc. < 5% R36, R38 obligatory | |
| At least C with R34 | conc. ≥ 10% R34 obligatory | 5% ≤ conc. < 10% R36, R38 obligatory | ||
| At least Xi with R41 | conc. ≥ 10% R41 obligatory | 5% ≤ conc. < 10% R36 obligatory | ||
| At least Xi with R36, R37 or R38 | conc. ≥ 20% R36, R37 and R38 are obligatory in the light of the concentration present if they apply to the substances under consideration | |||
(2) Gaseous preparations: For gases that produce corrosive effects (R34, R35) or irritant effects (R37, R41), the individual concentration limits specified in Table IVA, determine, when appropriate, the classification of gaseous preparations and shall determine the particular risk phrases which shall be assigned to them.
TABLE IVA
| Classification of the substance (gas) and/or relevant standard risk phrase | Classification of the gaseous preparation and standard risk phrase | |||
|---|---|---|---|---|
| At least C with R35 | At least C with R34 | At least Xi with R41 | At least Xi with R36, R37 or R38 | |
| At least C with R35 | conc. ≥ 1% R35 obligatory | 0.2% ≤ conc. < 1% R34 obligatory | 0.02% ≤ conc. < 0.2% R37 obligatory | |
| At least C with R34 | conc. ≥ 5% R34 obligatory | 0.5% ≤ conc. < 5% R37 obligatory | ||
| At least Xi with R41 | conc. ≥ 5% R41 obligatory | 0.5% ≤ conc. < 5% R36 obligatory | ||
| At least Xi with R36, R37 or R38 | conc. ≥ 5% R37, R36 and R38 obligatory as appropriate | |||
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