content: 90.0%; 85.0% Appearance and properties: colorless transparent liquid, has strong hair smoke irritating sour. Melting point (℃) : 820 ℃) : boiling point (one relative density (water = 1) : 123 relative steam density (air = 1) : saturated steam pressure (1.59 kPa) : 5.33 (24 ℃) burning hot (mol) : 254.4 kJ / ℃) : critical temperature (306.8 formic acid Critical pressure (MPa) : 8.63 xinchun/water distribution coefficient for numerical: - the ℃) : 0.54 flash point (68.9 (O.C) ignites temperature (℃) : 410 explosion limit % (V/V) : 57.0 explosion limit % (V/V) : 18.0 solubility: and water immiscible, insoluble in hydrocarbons, can mix soluble in alcohol. Stability and reactivity: stable. Forbidden things: strong oxidizer, with strong alkali, active metal powder. Dangerous characteristics: its steam and air to create explosive mixture, encounter flame, the high heat causes combustion explosion. React with strong oxidizer oyster. With strong corrosive. Solubility: and water immiscible, insoluble in hydrocarbons, can mix soluble in alcohol. YiSuan HCOOH another name, is a colorless, hair smoke, inflammable and exciting odour liquid, strong corrosive, formic acid can with water, ethanol, ethyl ether, glycerin and other immiscible with strong corrosive and spicy excitant sour volatile liquid, formic acid was originally established by j. - l. cover - comes with oxalic acid decomposition of Isaac.