Loading Port:Tianjin Port
Payment Terms:TT or LC
Min Order Qty:20MT m.t.
Supply Capability:120000MT m.t./month
Introduction of Flame Retardant Zinc Borate:
Properties and features:Zinc borate(3.5H2O),zinc borate(7H2O),zinc borate(modified) and Anhydrous zinc borate are the four main types of zinc borate. white powder.Density is 2.67g/cm3. The melting point is 980℃.The refractive index is 1.58.Insoluble in water, alcohol. but soluble in chlorhydric acid, sulfuric acid.
Quality standard of Flame Retardant Zinc Borate:
| Item | Index | |||
| Zinc borate | Zincborate | Zincborate | Zincborate | |
| 3.5H2O | 7H2O | Modified | Anhydrous | |
| Appearance | White powder | |||
| B2O3 % | 48±1.5 | 41±1.5 | ≥48.0 | 52-56 |
| ZnO % | 37±1.5 | 32±1.5 | ≥37.0 | 42-44 |
| Loss on ignition % | 13.5-15.5 | 24.0-26.5 | ≥24 | ≤1.5（400℃） |
| Free water %≤ | 1 | 1 | 1 | 0.5 |
| Pass Mesh 325 %≤ | 1 | 1 | 1 | 1 |
| Notes: The particle size can be produced according to customer's requirements. | ||||
Application of Flame Retardant Zinc Borate:
Zinc borate is inorganic addition flame retardant. it has good hot stability, stops buring and vanishes smokings. It can replace antimonous oxide but also be used with other inorganic flame retardant. Widely used in rubber, plastic, wood, cable, coating, etc.Zinc borate,modified can completely replace zinc borate. It have the advantage of lower price, better effect stops buring and vanishes smokings.
Package of Flame Retardant Zinc Borate:
Paper-plastic bag or plastic weaved bag, lined with PE bag and 25KG or 40KG weight.
