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Hazard Predictions

• Potentially hazardous: May be hazardous but unknown

When combined, strong oxidizers and strong bases may react with intensity, as shown in the examples below. However, no specific evidence was found for a hazardous reaction between weak oxidizers and strong bases. Because of the nature of the members of the Weak Oxidizing Agents group we would not expect reaction kinetics to yield hazardous conditions. We urge chemists to perform testing to ensure that hazards do not occur under conditions appropriate to the scenario.

Explosive reactions with N2O4 can occur even at very low temperatures (Mellor, J.W. 1940. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 8, p. 541. Longmans, Green and Co Ltd.).

Addition of ammonia or other bases catalyzes decomposition of hydrogen peroxide, producing combustion-enhancing oxygen gas (Berthold, W. et al. 1980. Proceedings 3rd International Symposium on Loss Prevention Safety Prom. Chem. Ind., Basle, SSCI. pp. 1431-1434).

The reaction between NaOH and Br2 is potentially violent (MCA Case History 1636, Case Histories of Accidents in the Chemical Industry, Washington, Manufacturing Chemists' Association).