Sulfur dioxide

Formula: O₂S
Molecular weight: 64.064
IUPAC Standard InChI: InChI=1S/O2S/c1-3-2
IUPAC Standard InChIKey: RAHZWNYVWXNFOC-UHFFFAOYSA-N
CAS Registry Number: 7446-09-5
Chemical structure:
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Other names: Sulfurous acid anhydride; Fermenicide powder; Fermenticide liquid; Sulfur oxide (SO2); Sulfurous anhydride; Sulfurous oxide; SO2; Sulphur dioxide; Fermenicide liquid; Schwefeldioxyd; Siarki dwutlenek; Sulfur oxide; UN 1079; Sulfur dioxide (SO2); Sulfur superoxide
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Henry's Law data

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Data compiled by: Rolf Sander

Henry's Law constant (water solution)

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

k°_H (mol/(kg*bar))	d(ln(k_H))/d(1/T) (K)	Method	Reference	Comment
1.4	2900.	L	N/A
1.5	3200.	Q	N/A	Only the tabulated data between T = 273. K and T = 303. K from missing citation was used to derive k_H and -Δ k_H/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.
1.2	3100.	C	N/A
1.2	3200.	C	N/A
1.2	3100.	T	N/A
1.2	3100.	Q	N/A	missing citation refer to several references in their list of Henry's law constants but they don't assign them to specific species.
1.3	3100.	N/A	N/A
1.2	3200.	X	N/A	The value is taken from the compilation of solubilities by W. Asman (unpublished).
1.2		X	N/A	Value given here as quoted by missing citation.
1.2		C	N/A
1.3	2800.	X	N/A
1.2	3000.	L	N/A
1.4	2800.	L	N/A
1.2	3100.	X	N/A	The value is taken from the compilation of solubilities by W. Asman (unpublished).
1.1		c	N/A
1.2	3100.	c	N/A
1.2	3200.	X	N/A	The value is taken from the compilation of solubilities by W. Asman (unpublished).

References

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No reference data available.

Notes

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Symbols used in this document:

d(ln(k_H))/d(1/T) Temperature dependence parameter for Henry's Law constant

k°_H Henry's Law constant at 298.15K
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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d(ln(k_H))/d(1/T)	Temperature dependence parameter for Henry's Law constant
k°_H	Henry's Law constant at 298.15K