# The Chemicals (Hazard Information and Packaging for Supply) Regulations 1994, Paragraph 1.2: Gaseous preparations


The concentration limits expressed as a volume/volume percentage in Table 1A below determine the classification of the gaseous preparations in relation to the individual concentration of the gas(es) present whose classification is also shown.
TABLE 1A
Classification of the substance (gas)
Classification of the preparation
T+
T
Xn
The R phrases denoting risk shall be assigned to the preparation in accordance with the following criteria:
the label shall include one or more of the above mentioned R phrases according to the classification used,
in general, the R phrases selected should be those applicable to the substance(s) present in the concentration which gives rise to the most severe classification.
T+ with R26, R27, R28
concentration > 1%
0.2% < concentration < 1%
0.02% > concentration <0.2%
T with R23, R24, R25
concentration >5%
0.5% < concentration < 5%
Xn with R20, R21, R22
concentration > 5%

---
Source: https://www.legislation.gov.uk/uksi/1994/3247/schedule/3/paragraph/1.2 (the official version)
Page: https://openlegislation.uk/chemicals-hazard-information-and-packaging-for-supply-regulations-1994/schedule-3/paragraph-1.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.