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The Explosives (Hazard Information and Packaging for Supply) Regulations (Northern Ireland) 2009

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Gaseous preparations

4.2  For gases that produce such effects (R34, R35 or R36, R37, R38, R41), the individual concentration limits specified in Table IVA, expressed as a volume/volume percentage determine, when appropriate, the classification of the preparation.

Table IVA
Classification of the substance (gas)Classification of the preparation
C with R35C with R34Xi with R41Xi with R36, R37 R38
(*)

According to the approved classification and labelling guide, when a substance or preparation is classified as corrosive and assigned the risk phrase R34 or R35, the risk of severe damage to the eyes is considered implicit and the risk phrase R41 is not included on the label. Consequently, if the preparation contains corrosive substances with R35 or R34 below the concentration limits for a classification of the preparation as corrosive, such substances can contribute to a classification of the preparation as irritant (R41) or irritant (R36).

Note

  • Simple application of the conventional method to preparations containing substances classified as corrosive or irritant may result in under-classification or over-classification of the hazard, if other relevant factors (e.g. pH of the preparation) are not taken into account. Therefore, in classifying for corrosivity, consider the advice given in approved classification and labelling guide regarding classification as corrosive and paragraph 4(4)(b) and (c) of Part I of this Schedule.

C with R35concentration ≥ 1% R35 obligatory0.2% ≤ concentration < 1% R34 obligatory0.2%(*)0.02% ≤ concentration < 0.2% R36/37/38 obligatory
C with R34concentration ≥ 5% R34 obligatory5%(*)0.5% ≤ concentration < 5% R36/37/38 obligatory
Xi with R41concentration ≥ 5% R41 obligatory0.5% ≤ concentration < 5% R36 obligatory
Xi with R36, R37, R38concentration ≥ 5% R36, R37, R38 are obligatory as appropriate

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