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Product Advantage
The three key advantages of povidone-iodine (PVP-I) can be described as follows:
1. Broad-spectrum antimicrobial activity
PVP-I is effective against a wide range of microorganisms, including Gram-positive and Gram-negative bacteria, fungi, viruses, and even some spores. Its activity comes from the release of free iodine, which rapidly disrupts microbial proteins and enzyme systems, achieving efficient and comprehensive disinfection.
2. Sustained-release effect
Compared with free iodine, the iodine in PVP-I exists in a complexed form. Through its combination with polyvinylpyrrolidone (PVP), iodine is released gradually. This controlled release not only prolongs the antimicrobial action but also maintains continuous efficacy, improving overall performance.
3. Low irritation
Because iodine is bound to PVP and released slowly, it causes significantly less irritation to the skin and mucous membranes than traditional iodine solutions (such as tincture of iodine). This makes it suitable for applications requiring mildness, such as skin disinfection, wound care, and gynecological and oral treatments.
Technical Parameters
Test Items | Parameters |
Appearance | White or cream white powder |
Solubility | Practically insoluble in all the present solves |
Divinyl imidazolidionon | ≤2 ppm |
Vinyl pyrrolidinone (impurity A) | ≤10 ppm |
Nitrogen calculated on anhydrous substance | 26.0%-29.0% |
Water/(Karl fischer) | ≤5.0% |
Solubility in acetic acid/ethanol | ≤1% |
Ash (6h,800℃) | ≤0.3% |
Arsenic(As) | ≤2mg/kg |
Heavy metals as Pb | ≤10mg/kg |
Total colony /CFU/g | ≤100 |
Mold and yeast count CFU/g | ≤100 |
Pseudomonas aeruginosa CFU/g | Not detected |
Escherichia Coli CFU/c | Not detected |
Staphylococcus aureus CFU/g | Not detected |
Salmonella CFU/g | Not detected |
Product Uses
1. Used in the paint industry primer, top paint, is a new type of anti-rust pigment;
Barium metaborate has good color and low color strength, can be used as the pigment of primer and top paint, and has better anti-rust effect in water-based latex paint.Barium metaborate is slightly soluble in water and releases Ba+ and B2O4- ions, which reverse the electrochemically corroded anode, thereby preventing the hydroxyl group from reacting with ferrous ions to form iron hydroxide (rust). In addition, barium ions can produce barium soap to increase the density of the paint film and reduce the water permeability of the paint film, so barium metaborate has excellent anti-rust properties.
2. Used in ceramics, paper, rubber and plastics industries;
Barium metaborate has the advantages of anti-rust, anti-mildew, anti-pulverization, flame retardant, long-lasting color and so on. Particularly valuable is that barium metaborate is non-toxic, in the manufacturing, construction and gas welding cutting painted steel, will not produce toxic phenomenon. It can also be used in houses, vehicles, Bridges, steel structure protective paint and fire retardant paint.
3. Used as additive flame retardant.
The flame retardancy of barium metaborate is not as good as antimony oxide, but because of its low price, it can be used as a partial substitute for antimony oxide flame retardants, and has synergistic effect with halogenated flame retardants. Suitable for epoxy resin, unsaturated polyester, phenolic resin, polyvinyl acetate, acrylic resin, polyurethane, polyvinyl chloride and so on.
FAQ
What are the preparation methods of barium metaborate?
There are several methods for preparing barium metaborate, including the thermal method and the precipitation method. The thermal method typically uses barium carbonate and boric acid as raw materials, which react under high-temperature conditions to form barium metaborate. The precipitation method involves mixing barium nitrate and boric acid in ammonia solution, causing barium metaborate to precipitate. Different preparation methods can affect the purity and particle size of barium metaborate.
What precautions should be taken when storing barium metaborate?
Where should barium metaborate be stored, and what storage conditions or restrictions should be followed?
