The best replacement for nitrous acid is nitric acid.

The best alternatives to nitrous acid are rated as following:
★★★★★  nitric acid

Your alternative for nitrous acid is not listed? Suggest!
Speaking about nitrous acid, one probably shouldn't forget about amines.

Other search terms related to nitrous acid and their ratings are:
★★★★★ amines
★★★★ phenylamine
★★★★ urea
★ aniline
glycine
amine
You have in mind a companion for nitrous acid and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of nitrous acid in all years. Click on graph for more.
nitrous acid
nitric acid