B.Part 2 is amended as follows:
(8)Sections 2.2 to 2.3.4.1 are replaced by the following:‘2.2.Flammable gases (including chemically unstable gases)2.2.1.Definitions2.2.1.1.Flammable gas means a gas or gas mixture having a flammable range with air at 20 °C and a standard pressure of 101,3 kPa.2.2.1.2.A chemically unstable gas means a flammable gas that is able to react explosively even in the absence of air or oxygen.2.2.2.Classification criteria2.2.2.1.A flammable gas shall be classified in this class in accordance with Table 2.2.1:Table 2.2.1Criteria for flammable gasesNote:Aerosols shall not be classified as flammable gases; see section 2.3.CategoryCriteria1Gases, which at 20 °C and a standard pressure of 101,3 kPa:
2Gases, other than those of Category 1, which, at 20 °C and a standard pressure of 101,3 kPa, have a flammable range while mixed in air.2.2.2.2.A flammable gas that is also chemically unstable shall additionally be classified in one of the two categories for chemically unstable gases using the methods described in Part III of the UN RTDG, Manual of Tests and Criteria according to the following table:Table 2.2.2Criteria for chemically unstable gasesCategory | CriteriaA | Flammable gases which are chemically unstable at 20 °C and a standard pressure of 101,3 kPaB | Flammable gases which are chemically unstable at a temperature greater than 20 °C and/or a pressure greater than 101,3 kPa2.2.3.Hazard CommunicationLabel elements shall be used for substances and mixtures meeting the criteria for classification in this hazard class in accordance with Table 2.2.3.Table 2.2.3Label elements for flammable gases (including chemically unstable gases)Classification | Flammable gas | Chemically unstable gasCategory 1 | Category 2 | Category A | Category BGHS Pictogram | | No pictogram | No additional pictogram | No additional pictogramSignal Word | Danger | Warning | No additional signal word | No additional signal wordHazard Statement | H220: Extremely flammable gas | H221: Flammable gas | H230: May react explosively even in the absence of air | H231: May react explosively even in the absence of air at elevated pressure and/or temperaturePrecautionary Statement Prevention | P210 | P210 | P202 | P202Precautionary Statement Response | P377P381 | P377P381 | |Precautionary Statement Storage | P403 | P403 | |Precautionary Statement Disposal | | | |The classification procedure is set out in the following decision logic (see Figures 2.2.1 to 2.2.2).Figure 2.2.1Flammable gasesGaseous substance or mixture of gasesDoes it have a flammable rage with air at 20 °C and a standard pressure of 101,3 kPa?NONot classifiedYESAt 20 °C and a standard pressure of 101 kPa, does it:(a) ignite when in a mixture of 13 % or less by volume in air; or(b) have a flammable range with air of at least 12 percentage points regardless of the lower flammable limit?YESCategory 1DangerNOCategory 2No pictogramWarningFigure 2.2.2Chemically unstable gasesFlammable gas or gas mixtureIs it chemically unstable at 20 °C temperature and a standard pressure of 101,3 kPa?YESCategory A(chemically unstable gas)No additional pictogramNo additional signal wordNOIs it chemically unstable at a temperature greater than 20 °C and/or a pressure greater than 101,3 kPa?YESCategory B(chemically unstable gas)No additional pictogramNo additional signal wordNONot classified as chemically unstable2.2.4.Additional Classification Considerations2.2.4.1.Flammability shall be determined by tests or, for mixtures where there are sufficient data available, by calculation in accordance with the methods adopted by ISO (see ISO 10156 as amended, Gases and gas mixtures — Determination of fire potential and oxidising ability for the selection of cylinder valve outlet). Where insufficient data are available to use these methods, test method EN 1839 as amended (Determination of explosion limits of gases and vapours) may be used.2.2.4.2.Chemical instability shall be determined in accordance with the method described in Part III of the UN RTDG, Manual of Tests and Criteria. If the calculations in accordance with ISO 10156 as amended show that a gas mixture is not flammable it is not necessary to carry out the tests for determining chemical instability for classification purposes.2.3.Aerosols2.3.1.DefinitionsAerosols, this means aerosol dispensers, are any non-refillable receptacles made of metal, glass or plastics and containing a gas compressed, liquefied or dissolved under pressure, with or without a liquid, paste or powder, and fitted with a release device allowing the contents to be ejected as solid or liquid particles in suspension in a gas, as a foam, paste or powder or in a liquid state or in a gaseous state.2.3.2.Classification criteria2.3.2.1.Aerosols shall be considered for classification as flammable in accordance with section 2.3.2.2 if they contain any component which is classified as flammable according to the following criteria set out in this Part:Note 1:Flammable components do not cover pyrophoric, self-heating or water-reactive substances and mixtures because such components are never used as aerosol contents.Note 2:Aerosols do not fall additionally within the scope of sections 2.2 (flammable gases), 2.5 (gases under pressure), 2.6 (flammable liquids) and 2.7 (flammable solids). Depending on their contents, aerosols may however fall within the scope of other hazard classes, including their labelling elements.2.3.2.2.An aerosol shall be classified in one of the three categories for this Class on the basis of its components, of its chemical heat of combustion and, if applicable, of the results of the foam test (for foam aerosols) and of the ignition distance test and enclosed space test (for spray aerosols) in accordance with Figures 2.3.1(a) to 2.3.1(c) of this Annex and subsections 31.4, 31.5 and 31.6 of Part III of the UN RTDG, Manual of Tests and Criteria. Aerosols which do not meet the criteria for inclusion in Category 1 or Category 2 shall be classified in Category 3.Note:Aerosols containing more than 1 % flammable components or with a heat of combustion of at least 20 kJ/g, which are not submitted to the flammability classification procedures in this section shall be classified as aerosols, Category 1.Figure 2.3.1 (a)AerosolsAEROSOLDoes it contain ≤ 1 % flammable components and does it have a heat of combustion < 20 kJ/g?YESCategory 3No pictogramWarningNODoes it contain ≥ 85 % flammable components and does it have a heat of combustion ≥ 30 kJ/g?YESCategory 1DangerNOFor spray aerosols, go to decision logic 2.3.1(b)For foam aerosols, go to decision logic 2.3.1(c)Figure 2.3.1 (b)Spray aerosolsSPRAY AEROSOLIn the ignition distance test, does ignition occur at a distance ≥ 75 cm?YESCategory 1DangerNODoes it have a heat of combustion < 20 kJ/g?NOCategory 2WarningYESIn the ignition distance test, does ignition occur at a distance ≥ 15 cm?YESCategory 2WarningNOIn the enclosed space ignition test; is:(a) the time equivalent ≤ 300 s/m3; or(b) the deflagration density ≤ 300 g/m3?YESCategory 2WarningNOCategory 3No pictogramWarningFigure 2.3.1 (c)Foam aerosolsFOAM AEROSOLIn the foam test, is:(a) the flame height ≥ 20 cm and the flame duration ≥ 2 s; or(b) the flame height ≥ 4 cm and the flame duration ≥ 7s?YESCategory 1DangerNOIn the foam test, is the flame height ≥ 4 cm and the flame duration ≥ 2 s?YESCategory 2WarningNOCategory 3No pictogramWarning2.3.3.Hazard CommunicationLabel elements shall be used for substances or mixtures meeting the criteria for classification in this hazard class in accordance with Table 2.3.1.Table 2.3.1Label elements for flammable and non-flammable aerosolsClassification | Category 1 | Category 2 | Category 3GHS Pictograms | | | No pictogramSignal Word | Danger | Warning | WarningHazard Statement | H222: Extremely flammable aerosolH229: Pressurised container: May burst if heated | H223: Flammable aerosolH229: Pressurised container: May burst if heated | H229: Pressurised container: May burst if heatedPrecautionary Statement Prevention | P210P211P251 | P210P211P251 | P210P251Precautionary Statement Response | | |Precautionary Statement Storage | P410 + P412 | P410 + P412 | P410 + P412Precautionary Statement Disposal | | |2.3.4.Additional Classification Considerations2.3.4.1.The chemical heat of combustion (ΔΗc), in kilojoules per gram (kJ/g), is the product of the theoretical heat of combustion (ΔΗcomb), and a combustion efficiency, usually less than 1,0 (a typical combustion efficiency is 0,95 or 95 %).For a composite aerosol formulation, the chemical heat of combustion is the summation of the weighted heats of combustion for the individual components, as follows:ΔHc product = Σinwi % × ΔHciwhere:ΔΗcchemical heat of combustion (kJ/g);wi %mass fraction of component i in the product;ΔΗc(i)specific heat of combustion (kJ/g)of component i in the product.The chemical heats of combustion can be found in the literature, calculated or determined by tests (see ASTM D 240 as amended — Standard Test Methods for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter, EN/ISO 13943 as amended, 86.l to 86.3 — Fire safety — Vocabulary, and NFPA 30B as amended — Code for the Manufacture and Storage of Aerosol Products).’;
C.Part 3 is amended as follows: