The formula of PaRodinal orginates from Sreenath:
To convert 30 500mg tablets,15g acetaminophen, specifies 20g sodium hydroxide
The chemical equation requires only 8g sodium hydroxide.
I tried this,it did not give complete conversion after 3 days.
I would suggest 10g hydroxide would probably work.
I think the formula specifies too much sodium sulfite,it will not dissolve.
Half the amount of sulfite is adequate.