Appearance: white crystalline powder Properties and functions: 1. SMP is strongly alkaline, having strong capacity of cleaning, buffering and softening, counteracting acidic contamination, emulsifying fat and oil, deflocculating to inorganic. 2. It can replace STPP to be used for the manufacture of effective detergents and rust remover for metal, reducing environmental pollution, preventing corrosion for metal (zinc, aluminum, etc.). Physical and Chemical data: Melting Point Boiling Point Density 72 �ºC 118 �ºC 2.61 g/m3 Other Related indexes: EINECS RTECS PubChem MDL 229-912-9 VV9287500 24886295 MFCD00149176 Solubility: soluble in water, solubility is 50g in 100g water (20�ºC) Main indexes: Index Standard Sodium oxide(Na2O) by wt % 28.7~30.00 SiO2 by wt % 27.8~29.2 Water insoluble by wt % 0.05 max Fe by ppm 100 max Whiteness % 80 min Bulk density by g/cc 0.80~0.97 PH of 1.0% Solution 12~13 Particle size by wt % (40~100mesh) 90 min