product name | sodium diphosphate |
appearance | white powder |
cas no. | 7722-88-5 |
molecular formula | na4o7p2 |
molecular weight | 265.9 |
density | 2.53 |
melting point | 880ºc |
assay | 98% min |
items |
standard request |
assay (as na4p2o7),% |
96.5.0min |
p2o5,% |
52.5-54.0 |
ph value (1%) |
9.9-10.7 |
arsenic ( as ),mg/kg |
1.0max |
fluoride ( f ),mg/kg |
50.0max |
cadmium (cd) ,mg/kg |
1.0max |
mercury (hg),mg/kg |
1.0max |
lead ( pb ),mg/kg |
4.0max |
water insoluble,% |
0.2max |
loss on ignition(105 °c, 4 hours then 550°c 30 minutes),% |
0.5max |