Specifications include, but are not limited to: All material furnished shall be (1) uniform in appearance, free flowing, free of visual evidence of foreign matter including but not limited to dirt, stone, trash, or any other material; (2) chemically treated to prevent caking, and shall be free of foreign matter, lumps and free water. Sodium Chloride Sodium Chloride shall be rock salt or solar salt conforming to the requirements of AASHTO M l43, Type I Grade I, with a moisture content not exceeding two (2) percent. Sodium Chloride treated with Liquid Magnesium Chloride Sodium Chloride treated with Liquid Magnesium Chloride shall be rock salt or solar salt conforming to the requirements of AASHTO M l43, Type I Grade I, treated with Liquid Magnesium Chloride with a moisture content not exceeding five and three tenths (5.3) percent. The finished product shall not be less than 91.3% sodium chloride determined as follows: Apparent total % sodium chloride shall be determined in accordance with ASTM-D-632. Magnesium and calcium content shall be determined in accordance with ASTM E-534 and computed as % magnesium chloride and % calcium chloride respectively. % sodium chloride shall then be computed as follows: % sodium chloride = % apparent sodium chloride – (% magnesium chloride + % calcium chloride)
