| http://www.w3.org/ns/prov#value | - Reacts violently with fire extinguishing agents such as powder.Depending on the degree of exposure, periodic medical examination is suggested.The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort.Rest and medical observation are therefore essential.Anyone who has shown symptoms of asthma due to this substance should avoid all f
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