I. Physical and chemical properties and uses Colorless transparent liquid with acidic odor, density :1.05; Freezing point :16.6℃; Boiling point :118.1℃. Used in the manufacture of vinyl chloride plastics, acetic anhydride, organic acetic acid Ester, acetate (lead, aluminum, copper, etc.) and acetate fiber: can also be used in dyes, pharmaceuticals, canned food, food preservative, pigment production and other industries. Ii. Toxicity It is low toxic and can be absorbed through digestive tract, respiratory tract and skin, and has irritating effect on eyes, skin and upper respiratory tract. Iii. Effects of short-term excessive exposure Inhalation: Inhalation of higher concentrations of acetic acid aerosols can cause coughing, dyspnea, pharyngeal irritation, dry throat, increased nasal discharge, nasal bleeding, headache and other stinging Aggressive symptoms. Eye contact: eyelid edema, conjunctival congestion. Skin contact: mild erythema, severe chemical burns, blisters and pain. 4. Effects of long-term exposure Long-term inhalation of acetic acid vapors or aerosols…

distinction The melting point of high-purity acetic acid is 16.7 degrees, so the acetic acid will form ice after the temperature is lower, and it is called glacial acetic acid. Acetic acid is the general name, can be high purity, can also be low purity. Glacial acetic acid and acetic acid are the same substance, with a strong pungent smell, the difference is only whether it is solid, acetic acid is generally liquid at room temperature of 20 ° C, and it is generally solid at low temperature of 16 ° C, which is also called glacial acetic acid. Glacial acetic acid (pure matter), that is, anhydrous acetic acid, acetic acid is one of the important organic acids, organic compounds. It solidifies into ice at low temperatures and is commonly known as glacial acetic acid. The volume expansion during solidification may cause the container to rupture. The flash point is…

Glacial acetic acid, also known as acetic acid ice, is a commonly used food acidity regulator and raw material for making vinegar. Glacial acetic acid plays an important role in the preservation and storage of food, which can prevent food spoilage and extend the shelf life of goods. Guava, pear, apple, orange, lemon, beer, wine, etc., can be stored with a small amount of glacial acetic acid. 1: What is glacial acetic acid? Glacial acetic acid is a type of carboxylic acid with the formula CH3COOH. Glacial acetic acid is a colorless transparent liquid with a sour odor. Glacial acetic acid is a metabolite in natural livestock and poultry and a normal metabolite in human body. Glacial acetic acid is the main raw material for the production of vinegar in industry, and it is also an acidic flavoring agent used in the food industry. 2: The role of glacial acetic…

Glacial acetic acid Acetic acid, also known as acetic acid (36%-38%), glacial acetic acid (98%), chemical formula CH3COOH, is an organic monic acid, the main component of vinegar. Pure anhydrous acetic acid (glacial acetic acid) is a colorless hygroscopic solid with a freezing point of 16.6 ° C (62 ° F) and becomes a colorless crystal after solidification. Its aqueous solution is weakly acidic and erosive, and the steam is irritating to the eyes and nose. 【 Basic Information 】 Chinese name:Acetic acidAnother name:Glacial acetic acid. Acetic acidChemical formula:CH3COOH Molecular weight:60.05 Fusing point:16.6 ℃ CAS login number:64-19-7 Boiling point:117.9 ℃ Flash point:39 ℃Relative density (water is 1):1.050Freezing point (℃):16.6Viscosity (mPa.s):1.22 (20℃)Vapor pressure at 20℃ (KPa):1.5Drug classification Antiseptic preservative – glacial acetic acid Appearance and smell Colorless liquid with a pungent acetic acid smell. solubility Soluble in water, ethanol, ether, carbon tetrachloride and glycerol and other organic solvents. 【 Function 】…

Pure glacial acetic acid, that is, anhydrous acetic acid, acetic acid is one of the important organic acids, organic compounds. It solidifies into ice at low temperatures and is often called glacial acetic acid. The freezing point is 16.6 ° C (62 ° F), and after solidification, it becomes a colorless crystal. Its aqueous solution is weakly acidic and highly corrosive, and it is strongly corrosive to metals. The steam has an irritating effect on the eyes and nose. So, what are the specific uses of glacial acetic acid in different industries? First, glacial acetic acid industrial use 1, used for synthetic dyes and inks. 2. In the food industry, it is used as acidity regulator, acidifier, pickling agent, flavor enhancer, spice and so on. It is also a good antimicrobial agent, mainly due to its ability to reduce the pH below the pH required for optimal microbial growth. 3,…