| Test ltem | Specification |
| Fusing point | 16.6 ℃ |
| Boiling point | 117.9 ℃ |
| Density | 1.05 g/cm3 |
| Flash point | 39 ° C (CC) |
| Refractive index | 1.371 (20 ° C) |
| Saturated vapor pressure | 1.52kPa (20℃) |
| Critical temperature | 321.6 ℃ |
| Critical pressure | 5.78 MPa |
| Ignition temperature | 426 ℃ |
| Upper explosion limit (V/V) | 16.0% |
| Lower explosive limit (V/V) | 5.4% |
| Appearance | Colorless transparent liquid |
| Solubility | Soluble in water, ethanol, ether, glycerol, insoluble in carbon disulfide |
Application
For industrial use
1). Acetic acid is a bulk chemical product and one of the most important organic acids. It is mainly used for the production of acetic anhydride, acetate and cellulose acetate. Polyvinyl acetate can be made into films and adhesives, and is also the raw material of synthetic fiber Vinylon. Cellulose acetate is used to make rayon and motion picture film.
2). Acetate formed by low alcohols is an excellent solvent and is widely used in the paint industry. Because acetic acid dissolves most organic matter, it is also commonly used as an organic solvent (e.g. for the oxidation of p-xylene to produce terephthalic acid).
3). Acetic acid can be used in some pickling and polishing solutions, as a buffer in a weakly acidic solution (such as galvanized, electroless nickel plating), as an additive in a semi-bright nickel plating electrolyte, in the passivation solution of zinc and cadmium can improve the bonding force of the passivation film, and is commonly used to adjust the pH of the weakly acidic bath.
4). Used in the production of acetate salts, such as manganese, sodium, lead, aluminum, zinc, cobalt and other metal salts, widely used as catalysts, fabric dyeing and leather tanning industry additives; Lead acetate is paint color lead white; Lead tetraacetate is an organic synthesis reagent (for example, lead tetraacetate can be used as a strong oxidizing agent, provide a source of acetoxy and prepare organic lead compounds, etc.).
5). Acetic acid can also be used as an analytical agent, in organic synthesis, in the synthesis of pigments and pharmaceuticals.
For the food industry
In the food industry, acetic acid is used as an acidifier, flavoring agent and fragrance when making synthetic vinegar, the acetic acid is diluted to 4-5% with water, and various flavoring agents are added. The flavor is similar to that of alcoholic vinegar, and the manufacturing time is short and the price is cheap. As a sour agent, can be used for compound seasoning, preparation of vinegar, canned, jelly and cheese, according to the production needs of appropriate use. It can also compose the aroma enhancer of incense wine, the amount of use is 0.1 ~ 0.3 g/kg.
