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Maneb and maneb preparations stabilized against self-heating need not be classified in Class

4.2 when it can be demonstrated by testing that a cubic volume of 1 m3 of substance does not

self-ignite and that the temperature at the centre of the sample does not exceed 200 °C, when

the sample is maintained at a temperature of not less than 75 °C ± 2 °C for a period of 24

hours.