Barium metaborate is also known as barium borate. White powder. Molecular weight 349.07. Dissolve in water. Functional pigments. It can enhance the anti- mildew, anti-rust, fire and anti-pulverization properties of the coating. It is prepared by adding barium sulfide and borax aqueous solution into the autoclave, adding a small amount of sodium silicate and heating at 125 ~ 140℃. At present, according to the data of different manufacturers, the particle size of barium metaborate commodity generally fluctuates in 0.35 ~ 35μm, the average particle size is about 8μm, and the effective particle size is only 3μm; The existing barium metaborate has the disadvantages of moisture absorption, caking, high water solubility, poor compatibility in various resins and poor firmness in paint film, so it must be modified with amorphous hydrated silica. At present, the existing method of preparing barium metaborate is to melt barium salt (barium sulfide, barium hydroxide, barium carbonate,…

The English name is barium metaborate Don’t call it Barium diboron tetraoxide; Chemical formula Ba(BO2)2 Molecular weight 222.95 EINECS entry number 237-222-4 Slightly soluble in water The function of barium metaborate: It has the properties of rust prevention, powder resistance, high temperature resistance, fire prevention and mildew prevention. Modified barium metaborate is a new non-toxic anti-rust pigment used in primer and topcoat in coating industry, and is also used in ceramics, papermaking, rubber, textiles and plastics industries. Modified barium metaborate can be used as a multi-functional pigment in coatings, which has the functions of anti-rust, anti-mildew, anti-bacteria, anti-fouling, flame retardant and color preservation. In the plastics industry, antimony trioxide can be partially replaced as a flame retardant, usually replacing 50%, which not only reduces the cost, but also has high thermal stability, the color is not easy to dark in the industrial sulfide smoke, improve light transmission, and does not…

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,…

Acid (acetic, glacial acetic) Aceticacid (Aceticacid, glacial) Content: 99% CAS: 69-19-7 Molecular formula: C2H4O2 Molecular weight: 60.06 Properties: Transparent colorless liquid above 16℃. Has a pungent special smell. If diluted with water, it will have a sour taste. Boiling point 118.1℃. Relative concentration 1.049. Melting point 16.7℃, below 16℃ for leafy crystal. When mixed with a small amount of water, it heats up, the capacity decreases, and the relative density increases. Concentration 77%~79% Relative density *. It reacts with most metal oxides and organic bases to form acetate. Soluble phosphorus sulfur. Still can dissolve fat oil, pigment, protein, resin, etc., dissolution ability is very strong. Stable to oxidant and reducing agent. Easy to catch fire. Contact with nitrogen produces white smoke. Its vapor irritates respiratory organs and burns when in direct contact with the skin. It has bactericidal effect. The vapor can pass through the polyethylene film. It is miscible…

Basic property Acetic acid, the content of about 30%, is liquid at room temperature. The content of ice acetic acid is more than 98%, it can be considered pure acetic acid, this acetic acid is liquid above 14 degrees Celsius, below 14 degrees Celsius, that is, solid, the appearance is very like ice, so it is called ice acetic acid, even if the weather is less than freezing in the north, but also pay attention to anti-freezing. The vinegar we eat contains about 3% acetic acid, and white vinegar is mixed with acetic acid, which has enough acidity and poor taste. Brewing vinegar has a lot of flavor substances, good taste. The freezing point of glacial acetic acid should be 16.6 degrees, and below 16 degrees it is solid, like water frozen. Food grade ice acetic acid (99% content) Edible ice acetic acid was prepared from ethanol produced by fermentation.…

Food grade ice acetic acid is one of the food additives, it has a unique taste and taste, can make food taste better. 1: Definition of food grade ice acetic acid Food grade glacial acetic acid is an isomer of acetic acid, also known as glacial acetic acid, which is a colorless transparent crystal or crystalline powder. At room temperature, it is an odorless, tasteless compound and non-toxic. Food grade ice acetic acid is used in food, has a sour taste, can enhance the flavor of food, and can be used in food as an acid agent. Ice acetic acid is soluble in water, the solubility in water is 22.8 g/l, is an economical and practical food additive. 2: Source of food grade ice acetic acid Food grade glacial acetic acid is derived from synthetic, chemical name acetic acid glacial alcohol. Food grade ice acetic acid is available in powder…