Pirika logo
JAVA, HTML5 & Chemistry Site

Top page of Pirika

 Properties Estimation
 Polymer Science
 Chemical Engineering
 Molecular Orbital
 Other Chemistry
 DIY:Do It Yourself

Hansen Solubility Parameter (HSP)
  Basic HSP
  Bio, Medical, Cosmetic
  Properties Estimation
  Analytical Chemistry
  Formulating for Cosmetics
  DIY:Do It Yourself

Other Writing

Ad Space for you


Ad Space for you





Last Update

Properties Estimation: Estimation of Henry constants.


Lecture note of Dr. Hiroshi Yamamoto for Yokohama National University (YNU) 2011

The program that Pirika provide.

YMB simulator (HTML5 version 2011.6.10, need pass code to use full function)

Newest version is implemented into HSPiP ver.4(Y-Predict). If the corporate visitor want to use full version, please buy HSPiP. The Abstract of HSPiP (2013.1.18)
How to buy HSPiP


Henry's law is one of the gas laws formulated by William Henry in 1803. It states that:
At a constant temperature, the amount of a given gas that dissolves in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with that liquid.
An equivalent way of stating the law is that the solubility of a gas in a liquid at a particular temperature is proportional to the pressure of that gas above the liquid. Henry's law has since been shown to apply for a wide range of dilute solutions, not merely those of gases. (WikiPedia)

P=Henry Const. * partial pressure

Estimation Method:

I can not find the estimation scheme for henry Constant. So I build group contribution method to predict henry constant by myself. I checked the performance of my method with the data of ”Chemical properties handbook, Yaws".

I implemtnt this result into YMB simulator.