chemicals chemicals , hydrochloric acid commerical quality sp.gr.1.16 acid value 32% (min). , nitric acid commercial sp.gr. 1.3 min. acd value 49.8%.. , commerical cleaner for derusting/degreasing specific gravity -0.78-0.80 volatility should be volatility ph value-6.0modified 30% phosphate acid 40% additive etc. 30% . , three in one chemical for degreasing, de-rusting & phosphating on ferrous metals appearance liquied color- colour less specific gravity-1.11 to 1.25 type- iron phosphate type phosphetic acid cleaner diluted with water method- wipe off/spray/brush effective timing -3to 6 minutes cleaning of oil ,grease,organic coating and oxides ,non-flammable as per is;3618-1966 class-d