- Solub. in water: (20 ºC): insoluble- Melting point: > 1000 ºC- Tariff number: 2811 22 00 90- Applications: analytical chemistry, chromatography.SPECIFICATIONSabsorption capacity at 50%: min. 23 %loss on drying (180 °C) : max. 2 %