Equations for calculation of the pH of buffer solutions containing sodium or potassium dihydrogen phosphate, sodium hydrogen phosphate, and sodium chloride at 25°C

1997 ◽  
Vol 26 (7) ◽  
pp. 709-727 ◽  
Author(s):  
Jaakko I. Partanen ◽  
Pentti O. Minkkinen
Keyword(s):  
Sodium Chloride ◽  
Potassium Dihydrogen Phosphate ◽  
Dihydrogen Phosphate ◽  
Hydrogen Phosphate ◽  
Potassium Dihydrogen ◽  
Sodium Hydrogen Phosphate ◽  
Buffer Solutions ◽  
Sodium Hydrogen

The Effect of Phosphatic Composite on Magnesium Phosphate Cement Performance

2014 ◽  
Vol 809-810 ◽  
pp. 477-484
Author(s):  
Zhao Qing Qi ◽  
Hong Tao Wang ◽  
Jun Liang Dang ◽  
Shi Hao Zhang ◽  
Jian Hua Ding
Keyword(s):  
Setting Time ◽  
Potassium Dihydrogen Phosphate ◽  
Magnesium Phosphate ◽  
Dihydrogen Phosphate ◽  
Ammonium Dihydrogen Phosphate ◽  
Hydrogen Phosphate ◽  
Sodium Dihydrogen Phosphate ◽  
Disodium Hydrogen Phosphate ◽  
Potassium Dihydrogen ◽  
Sodium Dihydrogen

The capacity of 10%, 30%, and 50% ammonium dihydrogen phosphate were replaced with an equal amount of three phosphate (potassium dihydrogen phosphate, sodium dihydrogen phosphate, disodium hydrogen phosphate) respectively. Magnesium phosphate cement was made by phosphate of replaced, which strength, setting time, fluidity, hydration temperature, and the hydration products was researched. The results show that: MPC was made that replaced with the equal amount of three kind of phosphate, which has good mechanical properties. Setting time and fluidity change along with the replacment. Three kind of phosphate replace ammonium dihydrogen phosphate, which change the hydration process of MPC. When ammonium dihydrogen phosphate was replaced by an equal amount of disodium hydrogen phosphate, the temperature of hydration is only 69.4 °C. XRD showed that the diffraction peaks of composite’s magnesium phosphate cement increases.

scholarly journals Critical role of potassium and sodium salts against insect-pest complex of rice

2021 ◽  
Vol 58 (3) ◽  
pp. 409-418
Author(s):  
Sitesh Chatterjee ◽  
Rambilash Mallick ◽  
Chirasree Gangopadhyay ◽  
Purnima Halder ◽  
Indrani Dana ◽  
...  
Keyword(s):  
Sodium Chloride ◽  
Critical Role ◽  
Potassium Dihydrogen Phosphate ◽  
Foliar Spray ◽  
Potassium Sulfate ◽  
Dihydrogen Phosphate ◽  
Research Station ◽  
Chloride Salt ◽  
Potassium Dihydrogen ◽  
Sodium Salts

A field experiment was carried out at Rice Research Station, Chinsurah, Hooghly during rainy (kharif) season, 2016 and 2017 to evaluate the effects of potassium and sodium salts on whorl maggot, leaf folder and yellow stem borer of rice. The yield and yield attributing characters were observed and benefit cost ratio was calculated. The potassium salts viz. potassium chloride (KCl), potassium nitrate (KNO3), potassium sulfate (K2SO4), potassium dihydrogen phosphate (KH2PO4) and sodium salt as sodium chloride (NaCl) were applied by three modes viz. seed soaking for 12 hours before sowing, seedling root dipping for twelve hours before transplanting and foliar sprays at 30 and 50 days after transplanting (DAT). The experimental results revealed that the foliar spray with 1% potassium dihydrogen phosphate salt at 30 and 50 DAT was the best performer against rice insect-pests by lowering down the infestation of leaf folder, dead heart and white ear head and as well as responses for good yield. Maximum benefit was recorded with foliar spray of 1% sodium chloride salt.

Note on the loss of phosphoric acid during fusion with ammonium fluoride

1916 ◽  
Vol 8 (1) ◽  
pp. 136-138
Author(s):  
William A. Davis ◽  
James Arthur Prescott
Keyword(s):  
Calcium Phosphate ◽  
Alkali Metal ◽  
Phosphoric Acid ◽  
Potassium Dihydrogen Phosphate ◽  
Ammonium Fluoride ◽  
Dihydrogen Phosphate ◽  
Hydrogen Phosphate ◽  
Disodium Hydrogen Phosphate ◽  
Potassium Dihydrogen ◽  
Considerable Loss

1. When salts or minerals containing phosphoric acid are ignited with ammonium fluoride as in the ordinary process of analysis of silicates, considerable loss of the phosphoric acid may occur. It is probable that the phosphorus is volatilised in the form of a phosphorus fluoride.2. The loss is least in the case of salts containing an alkali metal. It is less in the case of disodium hydrogen phosphate than in that of potassium dihydrogen phosphate, and is greatest in the case of phosphates of the alkali earth metals, such as calcium phosphate or apatite.

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