Welcome, I often play in IC and recently in IC². In IC could make Compressed Hydrated Coal Dust yet IC² do not give advice.
Please, help
"sorry for my English" 
Welcome, I often play in IC and recently in IC². In IC could make Compressed Hydrated Coal Dust yet IC² do not give advice.
Please, help
"sorry for my English"
As stated in the known bugs post, you can't craft hydrated coal dust at the moment, it will be added in the next version.
Actually it will be made like in ic1 by compressing a hydrated coal, although there's not recipe yet to make hydrated coal.