I'm assuming this is the correct one as it's acrylic, but says water based rather than celly based:
Chestnut Acrylic Sanding Sealer 500ml or 1 Litre or 400ml Aerosol | eBay
It says drying time 20 minutes, but I presume in its neat form rather than diluted which must be quicker I suppose.
But their cellulose thinners state that they're for the cellulose version of the sanding sealer, ie this:
Chestnut Cellulose Sanding Sealer 500ml or 1 Litre or 400ml Aerosol | eBay
So wouldn't the you use cellulose and for cellulose thinners, but water for the water based acrylic sealer? Sorry - not questioning your knowledge, just seems to make more sense that way round.
I've used cellulose paints & thinners and stuff plenty of times so I'm used to those, but not so much water based stuff but if they also use cellulose thinners that's fine obviously.