Phosphate Salt Calculator

PO42-

 

 

KH2PO4

Potassium Phosphate/Monobasic, KH2PO4, Mw=136.1g/M;
Conc.Stock%(w/w)50ml100ml250ml
KH2PO41M136.1g/M12.4846.805g13.61g34.03g
H2O mQ87.51647.71ml95.41ml238.53ml
1M; p=1.0902, 10oC

Untested information Preparation of 1 M Potassium Phosphate buffer.

Desired pH1M K2HP41M KH2P4
1M K2HP41M KH2P4
5.88.5ml91.5ml
6.013.2ml86.8ml
6.219.2ml80.8ml
6.427.8ml72.2ml
6.638.1ml61.9ml
6.849.7ml50.3ml
7.061.5ml38.5ml
7.271.7ml28.3ml
7.480.2ml19.8ml
7.686.6ml13.4ml
7.890.8ml9.2ml
8.094.0ml6.0ml

Na3PO4

Sodium Phosphate/Tribasic, Na3PO4, Mw=163.94g/M;
Conc.Stock%(w/w)50ml100ml250ml
Na3PO40.5M163.94g/M7.5874.10g8.20g20.49g
H2O mQ92.41349.92ml99.84ml249.61ml
0.5M; p=1.0804, 15oC

Na2HPO4

Sodium Phosphate/Dibasic, Na2HPO4, Mw=142.0g/M;
Conc.Stock%(w/w)50ml100ml250ml
Na2HPO40.5M142.0g/M6.6083.55g7.10g17.75g
H2O mQ93.39250.17ml100.34ml250.85ml
0.5M; p=1.0744, 18oC

NaH2PO4

Sodium Phosphate/Monobasic, NaH2PO4, Mw=120.0g/M;
Conc.Stock%(w/w)50ml100ml250ml
NaH2PO41M120.0g/M11.0946.00g12.00g30.00g
H2O mQ88.90648.085ml96.17ml240.43ml
1000ml/
120.0g/M0.5M1M
NaH2PO4 [g]60
120
H2O [ml]980.4
961.7
%(w/w)5.76711.094
H2O %(w/w)94.23388.906
p (g/ml)1.04041.0817

NaPi

Untested information 1M (pH 7.2): 6.68% (w/w) Na2HPO4, 0.52% (w/w) H3PO4, 92.80% H2O.

Untested information Preparation of 1 M Sodium Phosphate buffer.

Desired pH1M Na2HP41M NaH2P4
1M Na2HP41M NaH2P4
5.87.9ml92.1ml
6.012.0ml88.0ml
6.217.8ml82.2ml
6.425.5ml74.5ml
6.635.2ml64.8ml
6.846.3ml53.7ml
7.057.7ml42.3ml
7.268.4ml31.6ml
7.477.4ml22.6ml
7.684.5ml15.5ml
7.889.6ml10.4ml
8.093.2ml6.8ml