MANEB

Maneb is a fungicide.

Maneb may have properties of spontaneous combustion. Its classified as Class 4.2 with subsidiary risk  class 4.3 ( substances liable to spontaneous combustion/substances when in contact with water emits flammable gases or, when stabilized, classified as 4.3 substances when in contact with water emits flammable gases

When maneb is not having self-heating properties then it can be classified under class 4.3; however this must be proved by a lab test report 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 and shipment must be accompanied by a certificate from shipper that the substance does not belong to class 4.2.

4.3 substances which  in contact with water emit flammable gases
4.3 substances which in contact with water emit flammable gases
4.2 substances liable to spontaneous combustion
4.2 substances liable to spontaneous combustion

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