(k)The following point 6.3. is inserted:‘6.3.Tests on the flammability of aerosols6.3.1.Ignition distance test for spray aerosols6.3.1.1.Introduction6.3.1.1.1.This test standard describes the method to determine the ignition distance of an aerosol spray in order to assess the associated flame risk. The aerosol is sprayed in the direction of an ignition source at intervals of 15 cm to observe if ignition and sustained combustion of the spray takes place. Ignition and sustained combustion is defined as when a stable flame is maintained for at least five seconds. The ignition source is defined as a gas burner with a blue, non-luminous flame 4-5 cm in height.6.3.1.1.2.This test is applicable to aerosol products with a spray distance of 15 cm or more. Aerosol products with a spray distance of less than 15 cm such as dispensing foams, mousses, gels and pastes or fitted with a metering valve, are excluded from this test. Aerosol products that dispense foams, mousses, gels or pastes are subject to testing under the aerosol foam flammability test.6.3.1.2.Apparatus and material6.3.1.2.1.The following apparatus is required:Water bath maintained at 20 °C | accurate to ± 1 °CCalibrated laboratory scales (balance) | accurate to ± 0,1 gChronometer (stopwatch) | accurate to ± 0,2 sGraduated scale, support and clamp | graduations in cmGas burner with support and clamp |Thermometer | accurate to ± 1 °CHygrometer | accurate to ± 5 %Pressure gauge | accurate to ± 0,1 bar6.3.1.3.Procedure6.3.1.3.1.General requirements6.3.1.3.1.1.Before testing, each aerosol dispenser shall be conditioned and then primed by discharging for approximately one second. The purpose of this action is to remove non-homogeneous material from the diptube.6.3.1.3.1.2.The instructions of use shall be strictly followed, including whether the dispenser is intended to be used in the upright or inverted position. When shaking is required, shake immediately before testing.6.3.1.3.1.3.The test shall be carried out in a draught-free environment capable of ventilation, with the temperature controlled at 20 °C ± 5 °C and relative humidity in the range 30-80 %.6.3.1.3.1.4.Each aerosol dispenser is to be tested:
6.3.1.3.1.5.During the test, the can shall be positioned as indicated by label instructions. The ignition source shall be positioned accordingly.6.3.1.3.1.6.The following procedure requires testing the spray at intervals of 15 cm between the burner flame and the aerosol actuator, in the range of 15-90 cm. It is efficient to start at 60 cm distance between burner flame and aerosol actuator. The distance between burner flame and aerosol actuator shall be increased by 15 cm in the case of an ignition of the spray at 60 cm distance. The distance shall be decreased by 15 cm in the case of no ignition at 60 cm distance between burner flame and aerosol actuator. The aim of the procedure is to determine the maximum distance between aerosol actuator and burner flame that leads to sustained combustion of the spray or to determine that ignition could not be obtained at 15 cm distance between the burner flame and the aerosol's actuator.6.3.1.3.2.Test procedure6.3.1.3.2.1.All experiments shall be performed in a fume hood in a room that may be well ventilated. Ventilation of the fume hood and room can be applied for at least three minutes after each test. Take all necessary safety precautions to prevent the inhalation of combustion products.6.3.1.3.2.2.The cans with a 10-12 % nominal fill level shall be tested only once. The result tables need only one result per can indicated.6.3.1.3.2.3.When the test in the position in which the dispenser is designed to be used gives a negative result, the test shall be repeated in the position of the dispenser most likely to result in a positive result.6.3.1.4.Method of assessing results6.3.1.4.1.All the results shall be recorded. Table 6.3.1.1 below shows the model of ‘result table’ to be used.Table 6.3.1.1Date | Temperature … °CRelative humidity … %Name of product |Net volume | | Can 1 | Can 2 | Can 3Initial level of filling | | % | % | %Dispenser distance | Test | 1 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 315 cm | Ignition?Y or N | | |30 cm | Ignition?Y or N | | |45 cm | Ignition?Y or N | | |60 cm | Ignition?Y or N | | |75 cm | Ignition?Y or N | | |90 cm | Ignition?Y or N | | |Observations — including can position | | | |6.3.2.Enclosed space ignition test6.3.2.1.IntroductionThis test standard describes the method to assess the flammability of products emerging from aerosol dispensers due to their propensity to ignite in an enclosed or confined space. The contents of an aerosol dispenser are sprayed into a cylindrical test vessel containing a burning candle. If an observable ignition occurs, the elapsed time and amount discharged is noted.6.3.2.2.Apparatus and material6.3.2.2.1.The following apparatus is required:Chronometer (stopwatch) | accurate to ± 0,2 sWater bath maintained at 20 °C | accurate to ± 1 °CCalibrated laboratory scales (balance) | accurate to ± 0,1 gThermometer | accurate to ± 1 °CHygrometer | accurate to ± 5 %Pressure gauge | accurate to ± 0,1 barCylindrical test vessel | as detailed below6.3.2.2.2.Preparation of test apparatus6.3.2.2.2.1.A cylindrical vessel approximately 200 dm3 volume, approximately 600 mm in diameter and approximately 720 mm long and open at one end shall be modified as follows:6.3.2.2.2.2.Usually, the product leaves the aerosol can at an angle of 90° relevant to the vertical axis of the can. The layout and procedure described refers to this kind of aerosol product. In the case of unusually operating aerosols (e.g. vertical-spray aerosol dispensers) it will be necessary to record changes to equipment and procedures in accordance with good laboratory practice, such as ISO/IEC 17025:1999 General requirements for the competence of testing and calibration laboratories.6.3.2.3.Procedure6.3.2.3.1.General requirements6.3.2.3.1.1.Before testing, each aerosol dispenser shall be conditioned and then primed by discharging for approximately 1 second. The purpose of this action is to remove non-homogeneous material from the diptube.6.3.2.3.1.2.The instructions of use shall be strictly followed, including whether the dispenser is intended to be used in the upright or inverted position. When shaking is required, shake immediately before testing.6.3.2.3.1.3.The tests shall be carried out in a draught-free environment capable of ventilation, with the temperature controlled at 20 °C ± 5 °C and relative humidity in the range 30-80 %.6.3.2.3.2.Test procedure(a)A minimum of 3 full aerosol dispensers per product shall be conditioned to 20 °C ± 1 °C in a water bath with at least 95 % of the dispenser immersed in the water for at least 30 min (if the aerosol is fully immersed, 30 min conditioning is sufficient);(b)Measure or calculate the actual volume of the drum in dm3;(c)Comply with general requirements. Record the temperature and relative humidity of the environment;(d)Determine the internal pressure and initial discharge rate at 20 °C ± 1 °C (to eliminate faulty or partly filled aerosol dispensers);(e)Weigh one of the aerosol dispensers and note its mass;(f)Light the candle and apply the closure system (cover or plastic film);(g)Place the aerosol dispenser actuator orifice 35 mm or closer for a wide spray product, from the centre of the entrance hole in the drum. Start the chronometer (stopwatch) and following the instructions for use of the product; direct the spray towards the centre of the opposite extremity (cover or plastic film). The aerosol shall be tested in the position it is designed to be used, e.g. upright or inverted;(h)Spray until ignition occurs. Stop the chronometer and note the time elapsed. Re-weigh the aerosol dispenser and note its mass;(i)Ventilate and clean the drum removing any residue likely to affect subsequent tests. Allow the drum to cool if necessary;(j)Repeat the test procedure steps (d) to (i) for another two aerosol dispensers of the same product (three in total, note: each dispenser is only tested once);6.3.2.4.Method of assessing results6.3.2.4.1.A test report containing the following information shall be drawn up:6.3.2.4.2.The time equivalent (teq) needed to achieve ignition in one cubic metre can be calculated as follows:teq = 1000 × discharge time (s)Actual volume of drum (dm3)6.3.2.4.3.The deflagration density (Ddef) needed to achieve ignition during the test may also be calculated as follows:Ddef = 1000 × Amount of product dispensed (g)Actual volume of drum (dm3)6.3.3.Aerosol foam flammability test6.3.3.1.Introduction6.3.3.1.1.This test standard describes the method to determine the flammability of an aerosol spray emitted in the form of a foam, mousse, gel or paste. An aerosol, which emits a foam, mousse, gel or paste is sprayed (approximately 5 g) on a watchglass and an ignition source (candle, wax taper, match or lighter) is placed at the base of the watchglass to observe if ignition and sustained combustion of the foam, mousse, gel or paste occurs. Ignition is defined as a stable flame maintained for at least two seconds and a minimum 4 cm in height.6.3.3.2.Apparatus and material6.3.3.2.1.The following apparatus is required:Graduated scale, support and clamp | gradations in cmFire-resistant watchglass roughly 150 mm in diameter |Chronometer (stopwatch) | accurate to ± 0,2 sCandle, wax taper, match or lighter |Calibrated laboratory scales (balance) | accurate to ± 0,1 gWater bath maintained at 20 °C | accurate to ± 1 °CThermometer | accurate to ± 1 °CHygrometer | accurate to ± 5 %Pressure gauge | accurate to ± 0,1 bar6.3.3.2.2.The watchglass is placed on a fire-resistant surface within a draught-free area that may be ventilated after each test. The graduated scale is positioned exactly behind the watchglass and held vertically by means of a support and clamp.6.3.3.2.3.The scale is positioned in such a way that its origin is on a level with the watchglass base in a horizontal plane.6.3.3.3.Procedure6.3.3.3.1.General requirements6.3.3.3.1.1.Before testing, each aerosol dispenser shall be conditioned and then primed by discharging for approximately 1 second. The purpose of this action is to remove non-homogeneous material from the diptube.6.3.3.3.1.2.The instructions of use shall be strictly followed, including whether the dispenser is intended to be used in the upright or inverted position. When shaking is required, shake immediately before testing.6.3.3.3.1.3.The tests shall be carried out in a draught-free environment capable of ventilation, with the temperature controlled at 20 °C ± 5 °C and relative humidity in the range of 30-80 %.6.3.3.3.2.Test procedure(a)A minimum of four full aerosol dispensers per product shall be conditioned to 20 °C ± 1 °C with at least 95 % of the dispenser immersed in the water for at least 30 min before each test (if the aerosol is fully immersed, 30 min conditioning is sufficient);(b)Comply with general requirements. Record the temperature and relative humidity of the environment;(c)Determine the internal pressure at 20°C ± 1 °C (to eliminate faulty or partly filled aerosol dispensers);(d)Measure the discharge or flow rate of the aerosol product to be examined, so that the amount of test product dispensed can be more accurately gauged;(e)Weigh one of the aerosol dispensers and note its mass;(f)On the basis of the measured discharge or flow rate and following the manufacturer's instructions, release approximately 5 g of the product onto the centre of the clean watchglass with the aim of producing a mound no higher than 25 mm;(g)Within five seconds of completion of discharge, apply the source of ignition to the edge of the sample at its base and at the same time start the chronometer (stopwatch). If necessary, the ignition source shall be removed from the edge of the sample after approximately two seconds, in order to clearly observe if ignition has occurred. If no ignition of the sample is apparent, the ignition source shall be reapplied to the edge of the sample;(h)If ignition occurs note the following points:(i)Ventilate the test area immediately after each test;(j)If ignition is not obtained and the released product remains in the form of a foam or paste throughout its period of use, steps (e) to (i) shall be repeated. Allow the product to stand for 30 sec, 1 min, 2 min or 4 min before applying the ignition source;(k)Repeat the test procedure steps (e) to (j) twice more (a total of 3) for the same can;(l)Repeat the test procedure steps (e) to (k) for another two aerosol cans (3 cans in total) of the same product.6.3.3.4.Method of assessing results6.3.3.4.1.A test report containing the following information shall be drawn up: