Appearance white crystalline powder Purity 99.5% Min. CAS NO. 111-20-6 Formula HOOC (CH2) 8COOH Density 1.2705 (20/4) Melting point 134-134.50C Boiling Point 294.5℃ (13.3kPa) Moisture Content 0.3% Max. Ash Content 0.05% Max. Chromatic Code 1.0