Class 5.1: Oxidizing substances (agents) by yielding oxygen increase the risk and intensity of fire.

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Oxidizing substances (agents) by yielding oxygen increase the risk and intensity of fire

Oxidizer (Division 5.1) means a material that may, generally by yielding oxygen, cause or enhance the combustion of other materials.

1. A solid material is classed as a Division 5.1 material if, when tested in accordance with the UN Manual of Tests and Criteria, its mean burning time is less than or equal to the burning time of a 3:7 potassium bromate/cellulose mixture.

2. A liquid material is classed as a Division 5.1 material if, when tested in accordance with the UN Manual of Tests and Criteria, it spontaneously ignites or its mean time for a pressure rise from 690 kPa to 2070 kPa gauge is less then the time of a 1:1 nitric acid (65 percent)/cellulose mixture.

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Class 5.1: Oxidizing substances (agents) by yielding oxygen increase the risk and intensity of fire.

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