Formula: (NH₄)₂C₄H₄O₆ CAS: 3164-29-2 EC No.: 221-618-9 M (Molar Mass): 184.15 g/mol D (Density): 1.601 g/cm³ mp (Melting Point): Decomposes on heating bp (Boiling Point): Not applicable Optical Rotation: Optically inactive.

Assay (Acidimetric): ≥ 99.0 % Appearance: White crystalline powder. Identification (Ammonium, Tartrate): Passes test. pH (5% solution): 6.0 - 7.0 Chloride (Cl): ≤ 0.002 % Sulfate (SO₄): ≤ 0.005 % Heavy Metals (as Pb): ≤ 5 ppm Iron (Fe): ≤ 5 ppm Loss on Drying (at 110°C): ≤ 0.5 % Insoluble Matter: ≤ 0.01 %