# Relation between Temperature and viscosity of Linseed Oil?

I have been trying to get a relationship formula to determine the viscosity of Linseed oil. I have Absolute viscosity of the oil at 33.1 Cp (Source: http://www.engineeringtoolbox.com/absolute-viscosity-liquids-d_1259.html).

The problem is the system where I am using the fluid has a varying temperature, and I want to be able to know what the varying viscosity is. I am aware that the viscosity reduces with increase in temperature, but wasn't able to find a specific formula to relate the two.

Is there a formula to get the relationship between temperature and viscosity?

Thank you

One of the most simple and popular seems to be the Wright equation, $$\log_{10}\left(\log_{10}\left(\nu + \lambda \right)\right)=A-B\log_{10}(T),$$ where $\nu$ is the kinematic viscosity, $\lambda$ is a parameter, usually taken to be $0.7$, and $A$ and $B$ are compound-specific parameters. With knowledge of linseed oil viscosity at least one other temperature than the one you provided in your question, you could fit $A$ and $B$ parameters and apply the equation.
However, the best answer to your question is to obtain some empirical data. A 1977 paper[1] reports on linseed oil viscosity as a function of temperature, for example. They found that a different equation (not the Wright) gave a reasonable fit to the data. Specifically, they found $$\ln(\eta) = -5.73 + \frac{2820}{T}$$ for viscosity $\eta$ in centipoises and temperature $T$ in K.