Pure Sulphur (Sulphur Pastilles) Color: Yellow Bright Sulphur Pastille Size: 2mm - 4mm Height: 1.4 - 1.8mm Purity: 99.9% Carbon: 0.1% Max Ash Content: 1000C - 0.05% Max Acidity: (H2SO4) 0.003% Max Moisture: Less than 0.5% Weight Loss: at 105C 0.1% Max Bulk Density: 1090 - 1197 KG/M3 Solubility: NH2O insoluble Boiling: 444.5C Melting Point: 115 - 120C Autoignition: 248 - 260C Specific Gravity: 2.07 at 70F Flash Point: 207.2C Pastille Discharge Temperature: 50 - 65C Weight: 29.3 /mg