Acideice

It would have Blaststone for the top layer for the floor the Blaststone would be blue. You can run out of air but you can use bubbles to breathe which you can make using acid absorbers which you can put in your house. There will be acid lakes with acid instead of water and you die in the acid after it melts your armour and whatever you have in your hand (this takes a few seconds). There will also be acid mountains made of acid drooling down it.

The tree type would be called orangewood and there would be an acid absorber with a purple bubble around it. There would be bubbles that floating around as well.  In the acid lake there will be acid jellyfish. If you hurt it, it will hurt you with it's acid fire for a few minutes. There will also be a creeper that when it touches an acid absorbing plant it will turn into an acid creeper. Acid creepers spray acid at you and when they blow up they use the acid they have left.

DROPS AND ITEMS: when you kill an acid creeper you will get chalk to make an acid helmet to breathe longer. When you kill an acid jelly fish you will get jellyfish legs and head rarely. If you have a glass bottle and you click the jellyfish you will get an acid breathing potion.

You would go to this dimension to get special items like acideice ore. This lets you make special tools and armour when something hits you acid fires at them.