1.1 This specification covers sodium chloride intended for use as a deicer and for road construction or maintenance purposes.1.2 The values stated as SI units are to be regarded as the standard.1.3 For purposes of determining conformance This specification covers testing and property requirements of two types and two grades of sodium chloride obtained from natural deposits (rock salt) or produced by man (evaporated, solar, and others), intended for use as a deicer and for road construc