looked-for

Paraffin is a product rather sought-after nowadays.

or just

Paraffin is a very saleable product at this time.

I still think that, in this context, paraffin should either be paraffin wax or micro-crystalline paraffin.

Thank you, Alan. I will ask the author about the paraffin wax or micro-crystalline paraffin.

p.s. Is proofing of wood ok?

Paraffin is a product which is in much demand.

'proofing of wood'... do you mean as like a protective coating for wood ?

I think that's a much better way of saying it, Squeaky.

'Proofing of wood', 'wood proofing' - yes, it means protecting it from water penetration and subsequent rot and also insect and fungus attack. This is more a feature of creosotes etc but they do contain toxic substances so modern proofing solutions may contain higher molecular weight hyrdocarbons dissolved in lighter boiling fracti

Squeaky, yes that is the intended meaning.

Thank you both.

'proofing of wood', 'wood proofing'....

Alan, I suspected that was the case. So just calling it a 'sealant' would cover many applications....

It has a wide number of applications in the production of candles, matches, in the food industry, production of paper, use as a sealant and alike.

Thank you Squeaky.

Sorry for not replying immediately. I've been in Ireland last ten days.