Fluid thermal expansion

[Audi Driver P.E.]

Aside from water, which expands when it is cooled to the freezing point (and thus contracts when heated above that point), is there an existing fluid that, in temperatures at or above room temperature, contracts when heated?

 

[Ble_PE]

 

[Dleg]

Water "contracts" when it changes phase from solid to liquid, purely because of the change from a crystal lattice structure to a liquid.  I am pretty sure that once it is a liquid, it only expands as it is heated, hence the need for expansion tanks on hot water heaters and boilers.  As far as I know, no liquid contracts as it is heated.  

 

[Audi Driver P.E.]

 As far as I know, no liquid contracts as it is heated.  

That is my understanding as well, but I was thinking there might be some strange fluid out there maybe an odd azeotrope or something?  Thought I'd tap into the great engineering minds here.