Does sodium borohydride spontaneously combust in contact with water?

    Sodium borohydride will spontaneously combust when exposed to water.Sodium borohydride (BH4Na) is a white crystalline powder with a chemical formula of NaBH4. It has a molecular weight of 37.83 g/mol and a CAS number of 16940-66-2. This product is commonly used as a reducing agent in various chemical reactions, including the reduction of carbonyl compounds and metal ions. Sodium borohydride is highly reactive and must be handled with care. It is soluble in water and is stable under normal conditions. Overall, Sodium borohydride is a versatile chemical that is essential in many laboratory applications.

   Sodium borohydride soluble in water, liquid ammonia, amines. Soluble in methanol, slightly soluble in ethanol, tetrahydrofuran. Insoluble in ether, benzene, hydrocarbon. Stable in dry air, decomposes in wet air, and decomposes under heating at 500 ° C. Under normal circumstances, sodium borohydride cannot reduce esters, amides, carboxylic acids and nitrile compounds, except when the presence of heteroatoms in the carbonyl α site of the ester, the ester can be reduced.