Litharge, which is Lead Mono-Oxide (PbO) is a yellowish or reddish, odorless, heavy, earthy, water-insoluble, solid, PbO, used chiefly in the manufacture of Lead Stabilizers (Lead Steareates), pottery, Lead glass, paints, enamels, and inks.Litharge is also called Lead Monoxide, Lead Oxide, Plumbous Oxide & Yellow oxide.
Specifications of Litharge
| ATTRIBUTE | COMPOSITION |
| Colour | Canary Yellow with Reddish tinch |
| Crystal Structure | Orthorhombic + Tetragonal |
| Specific Gravity | 9.5 to 9.9 |
| Thermal Stability | 250 ° C to 897 ° C |
| Retention on 240 mesh BS Sieve/63 micron IS Sieve (max %) | 0.10 |
| Apparent Density (scott) gm/cc | 1.8 to 2.2 |
| Subsidence in Petrol / Water mi/gm | 0.40 to 0.42 |
| Acid Absorption mg/gm | 80 to 110 |
| Solubility in Water gm/litre | 0.10 |
| Oil Absorption % | 0.1 |
| Insoluble matter in Acetic Acid (% Max) | 0.08 |
| Melting point (°C) | 888 |
| Volatile matter (% max) | 0.20 |
| Water insoluble in acetic acid (% max) | 0.10 |
| Water Absorption | 100 – 105 mg/gm |
| Pb3O4(% max) | 0.06 |
| Free Lead (% Max) | 0.01 to 0.05 |
| PbO (% Min) | 99.5 |