Formula: C₄H₆O₆ CAS: 87-69-4 EC No.: 201-766-0 M (Molar Mass): 150.09 g/mol D (Density): 1.76 g/cm³ mp (Melting Point): 168-170°C Specific Rotation: [α]²⁰D +12.0° to +12.8° (c=20 in water)

Assay (Acidimetric): ≥ 99.5 % Appearance: Colorless or white crystals. Specific Rotation [α]²⁰D: +12.2° to +12.6° Solubility (in water): Very soluble, clear solution. Loss on Drying (105°C): ≤ 0.5 % Residue on Ignition: ≤ 0.05 % Sulfate (SO₄): ≤ 0.01 % Oxalate (C₂O₄): Passes test. Heavy Metals (as Pb): ≤ 10 ppm