Uhh?....oh, I see. Should have been more complete with my answer. As a standalone mod, of course Chemistry will need to be compatible with the other NRaas mods. There have been several updates to MC and a few of the others already to make them compatible with Chemistry, alongside of them being updated for other reasons, and there will no doubt be more updates like that in the future. Several of the mods share the MC filtering mechanism, for example, and the features all have to work together for the players who have them.
Has it ever been considered to upload those mods here?
As my colleague barbarat stated earlier up this thread, we wouldn't actually want the mods to be available for download from multiple locations, other than mirrored servers that we would arrange ourselves, or have to provide support from more than the one centralized place over which we have direct control. The mods are not static and will still be in development as long as there is demand for them, so it would become far too easy for there to be outdated or mismatched versions if they were to be available from multiple places.
If NRaas itself were dissolving, not merely our current landlords, and we were also shutting down the development and beta testing systems, as well as the knowledge base, then that might be a different matter. But those things are not happening.