磷酸三钠(TSP)
  
化学式：  Na3PO4  ·  XH2O  (X=0,12)  
分子量：380.12  
执行标准：  HG/T2517-93  
生产能力：  20000  吨  /  年  
性状：  外观为白色或无色粒状结晶，易风化，易溶于水，不溶于有机溶剂，水溶液呈碱反应，1%  水溶液  PH  值为  12.1，相对密度1.62，熔点73.4  ℃。  
用途：  软水处理、日用化工、电镀磷化、印染固色、搪瓷助熔及制革脱脂等。  
包装：  内塑外编，每袋净重25、50、1000Kg，贮于通风干燥

技术指标：    
  
序号        指标名称                                              无水物Na3PO4          十二水物Na3PO4?12H2O    
                                                                                工业级  食品级              工业级    食品级  
1              主含量  %  ≥                                            98.0      98.0                  98.0        98.0    
2        五氧化二磷  (  以P2O5  计  )%  ≥              39.5        39.5                    18.3      18.3    
3        甲基橙碱度(以  Na2O  计)                          36-40      36-40              15.5-19      15.5-19  
4        硫酸盐  %  ≤                                                                  0.25                  0.5              0.5    
5      重金属(以  Pb  计)  %  ≤                                              0.001                                    0.001    
6    砷(以  As  计)  %  ≤                                                      0.0003                                  0.0003    
7  氟化物(以  F  计)  %  ≤                                                    0.005                                    0.005    
8  水不溶物  %  ≤                                                    0.10      0.10                    0.10          0.10