... ; Easily soluble in water, insoluble in alcohols; Has salty taste. Sodium gluconate is widely used in textile dyeing, printing and metal ... , retarder for cement, plating and alumina dyeing industries. Item Food grade Identifications Meet the specifications Purity, % 98.0-101 Drying loss ... .002 Sulphate, % ≤ 0.03 Chloride, % ≤ 0.03 Reduzate, % ≤ 0.30 Sodium gluconate tech grade