formic acid

Description

Property: Colorless transparent oily liquid smoke, with the irritating ***** acid is miscible with water and most polar organic solvents, and somewhat soluble in hydrocarbons. In hydrocarbons and in the vapor phase it consists of hydrogen-bonded dimers rather than individual molecules. Owing to its tendency to hydrogen-bond, gaseous formic acid does not obey the ideal gas law. Solid formic acid (two polymorphs) consists of an effectively endless network of hydrogen-bonded formic acid molecules. This relatively complicated compound also forms a low-boiling azeotrope with water (*2.4%) and liquid formic acid also tends to supercool. Specification: Item Top Grade First Grade Qualified Grade Purity%, ≥ *0 *5 *5 Chroma(Pt-Co)≤ *0 *0 Dilution test(Acid+water=1*3)%, ≤ No cloud Qualified Chloride(C1)%, ≤ 0.**3 0.**5 0.**0 Sulfate(S*4) %, ≤ 0.**1 0.**2 0.**0 Iron(Fe) %, ≤ 0.***1 0.***5 0.***0 Residue on evaporation, %, ≤ 0.**6 0.**0 0.**0