calcium stearate chemical properties melting point 147-149°c density 1.08g/cm3 merck 14,1703 cas database reference 1592-23-0(cas database reference) epa substance registry system octadecanoic acid, calcium salt(1592-23-0) safety information hazard codes xn risk statements 20/21/22-36/37/38 safety statements 22-24/25-36-26 wgk germany - rtecs wi3000000 hs code 29157030 hazardous substances data 1592-23-0(hazardous substances data)