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  Polyethylene Glycol MW 300  
     
 
wt% log P (dynes/cm^2)
   
2.6 6.36
5.0 6.73
10.0 7.00
15.0 7.23
20.0 7.41
25.0 7.57
30.0 7.71

An equation that fits this data is the following.

log P = a + b * (wt%) ^ c

where a = 4.79, b = 1.28 and c = 0.24

Note that it should be applied only over the range of pressures measured.

 
     
   
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