Molecular formula: 2PbO · PbHPO3 · H2O
Molecular weight:742.57
Property: It is slight white, sweet and toxic powder with the specific gravity of 6.94. It can dissolve in hydrochloric acid, and nitric acid, but not in water. It will turns to gray & black at 200, it turns to yellow at 450, and it has good deductibility. It is antioxidant; it has the excellent performance of resistance to ultraviolet ray, cold, and ageing.
Application: Mainly used for the heat stabilizer of PVC opaque products because of good insulation,weatherablity and ultraviolet radiation absorbency.
Package: Plastic weaved bag, lined with PE bag, and 25Kg weight.
Storage: It is toxic inorganic product, so it should be kept in a dry and cool storage house with good ventilation, and cannot be stored or transported with food.
Product quality HG/T 2339-2005
| Index | Best quality | First quality | |
Appearance | White powder without evident mechanical impurity | White powder without evident mechanical impurity | |
Lead oxide (PbO), % | 90.0±1.0 | 90.0±1.0 | |
Phosphorous acid (H3PO3),% | 11.0±1.0 | 11.0±1.0 | |
Heating loss, % ≤ | 0.30 | 0.40 | |
Fineness0.075 mesh, % ≥ | 99.70 | 99.60 | |
Whiteness, % ≥ | 90.0 | 90.0 | |