Chemical formula：K4P2O7
Molecular weight：330.34
Property:white powder or mass, specific gravity: 2.534, M.P.: 1109 ; Soluble in water, insoluble in ethanol and its aqueous solution is alkali. Solubility(25 ): 187g/100g water; PH (1% aqueous solution): 10.2; It has the same properties as other condensed phosphate.
技术指标：Technical Specifications：
| 序号No. | 指标名称Specifications | 工业级Tech grade | 食品级Food grade | |
| 1 | 主含量 % ≥ Main content | 98.0 | 98.0 | |
| 2 | P2O5 % ≥ | 42.2 | 42.2 | |
| 3 | Cl % ≤ | 0.005 | 0.001 | |
| 4 | 铁 % ≤ Fe | 0.008 | 0.003 | |
| 5 | 水不溶物 % ≤ Water insoluble | 0.2 | 0.1 | |
| 6 | PH值 PH (2% water solution ) | 10.1-10.7 | 10.1-10.7 | |
| 7 | 重金属 ≤ Heavy Metal（Pb） | 0.003 | 0.001 | |
| 8 | 氟 % ≤ F | 0.001 | 0.001 | |
| 9 | 砷 % ≤ As | 0.005 | 0.0003 | |
| 10 | Loss on ignition % ≤ | 0.5 | 0.5 | |
Uses: mainly used as complexing agent in cyanogen-free electroplating, substituting for sodium cyanide. It also can be used as pretreating agent in electroplating and pyrophosphoric acid electroplating solution, as ingredient and additive in all kinds of detergents and metal surface treating agent, as clay dispersant in ceramic industry, as dispersant and buffering agent in pigment and dyes, to remove a small amount of ferric ion from water in blanching and dyeing industry to improve quality.
Packing：Plastic woven bag. Net weight 25 Kg、 50Kg 、1000Kg , store at a cool, dry and well ventilated place.
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