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EC number: 203-002-1
CAS number: 102-06-7
The vapour pressure of DPG (1-3 diphenylguanidine) was evaluated in a study performed in accordance with OECD testing guideline 104 and GLP requirements. The method used is the Knudsen cell effusion method coupled with a micro-balance. The vapour pressure of DPG extrapolated at 25°C about 3.7e-10 Pa. Two other publications gives about the same figure.
Three different records are put into the same way as the
end points study records:
- Demangel study: the OECD method 104 was used, and no
major deviation implemented. Three vapour pressure are determinate: at
81°C , P = 6.524Pa, at 90°C P=5.548 Pa and at 100°C P= 5.896 Pa..
Extrapolated, the vapour pressure of DPG at 25°C was found equals to
- Bayer 1988: The vapour pressure of DPG extrapolated at
25 °C is 4 e-10 Pa at 25°C.
- Bayer: The vapour pressure of DPG extrapolated at 20 °C
is 17.4e-10 Pa.
Note that no indication of method used is given for the
As a conclusion, the vapour pressure of DPG extrapolated
at 25 °C was found equal to 3.7.e-10 Pa.
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