描述
Polyphosphoric acid CAS 8017-16-1
| 项目 | 规格 | ||||
| 外观 | Colorless transparent or slightly yellowish, viscous liquid | ||||
| H3PO4, % | ≥105.0 | ≥115.0 | ≥116.0 | ≥117.0 | ≥118.0 |
| P2O5, % | ≥76.0 | ≥83.3 | ≥84.0 | ≥84.7 | ≥85.4 |
| Chlorine, % | ≤0.0010 | ≤0.0010 | ≤0.0010 | ≤0.0010 | ≤0.0010 |
| Iron, % | ≤0.0020 | ≤0.0020 | ≤0.0020 | ≤0.0020 | ≤0.0020 |
| Arsenic, % | ≤0.0100 | ≤0.0100 | ≤0.0100 | ≤0.0100 | ≤0.0100 |
| Heavy metals (calculated as lead),% | ≤0.0030 | ≤0.0030 | ≤0.0030 | ≤0.0030 | ≤0.0030 |
申请：
1. Polyphosphoric acid (PPA) is a commonly used chemical modifier of asphalt. Blended with asphalt, it forms stable chemical bonds, improves interfacial compatibility and modification effects, and has received much attention in recent years.
2. Polyphosphoric acid (PPA) undergoes two chemical reactions during the modification process: neutralisation and esterification. Compared with other modifiers, polyphosphoric acid has excellent modification effects on asphalt, such as improving water damage and rutting resistance, improving high temperature performance, reducing temperature sensitivity.
3. In addition, research has shown that the polyphosphoric acid and some polymer blending, not only can achieve the same effect with the use of polymer-modified asphalt alone, but also with cheap polyphosphoric acid modifier instead of some of the expensive polymer modifiers, reduce the cost of modified asphalt.
4. Polyphosphoric acid can also be used in organic synthesis as a water loss agent, cyclisation agent, acylating agent, is the condensation, cyclisation, rearrangement, substitution and other reactions of the catalyst or solvent.
5. Sometimes with polyphosphoric acid ester (PPE) class to increase the solubility of polyphosphoric acid in organic solvents, in addition to polyphosphoric acid is also used as orthophosphoric acid substitutes and analytical reagents.
6. It is used as a catalyst for polymerisation, alkylation, dehydration and isomerisation in the chemical and petrochemical industries, and has a wide range of applications especially in pharmaceuticals, organic pigments and petrochemical catalysts. It can also be used in the synthesis of pharmaceutical products such as Fluoro Methaquine and Ketotifen.
Package:40kgs/drum; 340kgs/drum; IBC drum.
存储：
存放在干燥、清洁、通风良好的仓库中。
避免光照和加热。
保护产品在运输过程中不受泄漏、雨淋和日晒的影响。
