Ammonia

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Henry's Law data

Go To: Top, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Rolf Sander

Henry's Law constant (water solution)

kH(T) = H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)

H (mol/(kg*bar)) d(ln(kH))/d(1/T) (K) Method Reference Comment
27.2100.QN/AOnly the tabulated data between T = 273. K and T = 303. K from missing citation was used to derive kH and -Δ kH/R. Above T = 303. K the tabulated data could not be parameterized by equation (reference missing) very well. The partial pressure of water vapor (needed to convert some Henry's law constants) was calculated using the formula given by missing citation. The quantities A and α from missing citation were assumed to be identical.
61.4200.MN/A 
56.4100.MN/A 
56.4200.TN/A 
58.4100.TN/A 
58.4100.QN/A missing citation refer to several references in their list of Henry's law constants but they don't assign them to specific species.
78. MN/A 
62.4085.?N/AN/A 
53. QN/A missing citation gives missing citation as the source for the data. However, no data was found in that reference.
59.4400.XN/A 
76.3400.MN/A 
61.4200.LN/A 
10.1500.LN/A 
57.4100.XN/AThe value is taken from the compilation of solubilities by W. Asman (unpublished).
59.4100.XN/AThe value is taken from the compilation of solubilities by W. Asman (unpublished).
62. XN/AValue given here as quoted by missing citation.

References

Go To: Top, Henry's Law data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

No reference data available.


Notes

Go To: Top, Henry's Law data, References