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EC number: 230-386-8 | CAS number: 7085-19-0
Henry's Law constant
Administrative data
Link to relevant study record(s)
- Endpoint:
- Henry's law constant
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Qualifier:
- according to guideline
- Guideline:
- other: Directive 94/37/EEC, Annex I, Section 2, Paragraph 2.3.2
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- No laboratory work was performed.
- H:
- 0 Pa m³/mol
- Temp.:
- 20 °C
- Conclusions:
- The Henry's law constant (K) calculated with the Clausius-Clapeyron equation was found to be: K = 2.18 x 10^-4 Pa m^3 mol^-1 at 20 °C.
- Executive summary:
The Henry’s law constant of the test material was determined in accordance with the Directive 94/37/EEC, Annex I, Section 2, Paragraph 2.3.2.
The Henry's law constant K calculated with the Clausius-Clapeyron equation was found to be: K = 2.18 x 10^-4 Pa m^3 mol^-1 at 20 °C.
Reference
The vapour pressure P of the test material, was calculated at 20 °C (293 K) using the above established Clausius-Clapeyron equation:
Log P = (-4028.3 / T) + 10.60 (2)
The vapour pressure was found to be: 7.10 10^-4 Pa
The water solubility S at 20 °C was estimated to be: 699 mg.L^-1 = 699 g.m^-3
Using these two values, the Henry's law constant (K) calculated with the equation (1) was found to be:
K = 2.18 x 10^-4 Pa m^3 mol^-1
Description of key information
The Henry's law constant (K) calculated with the Clausius-Clapeyron equation was found to be: K = 2.18 x 10^-4 Pa m^3 mol^-1 at 20 °C.
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 0
- at the temperature of:
- 20 °C
Additional information
The Henry’s law constant of the test material was determined in accordance with the Directive 94/37/EEC, Annex I, Section 2, Paragraph 2.3.2. The study was awarded a reliability score of 2 in accordance with the criteria set forth by Klimisch et al. (1997).
The Henry's law constant (K) calculated with the Clausius-Clapeyron equation was found to be: K = 2.18 x 10^-4 Pa m^3 mol^-1 at 20 °C.
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