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  • The color of barium sulphate, predominantly white, plays a crucial role in its identification and application across various industries. With the demand for high-quality barium sulphate soaring, choosing the right supplier becomes vital. Businesses must consider factors like purity, particle size, regulatory compliance, and customer service when sourcing barium sulphate to ensure they receive a product that meets their stringent requirements. As industries continue to evolve, reliable suppliers will remain indispensable in providing the necessary materials to support innovations and advancements.


  • Rebecca Capua is an assistant conservator in the Paper Conservation Department at the Metropolitan Museum of Art since 2009. She received an MA in art history and an Advanced Certificate in art conservation from the Conservation Center, Institute of Fine Arts, New York University in 2007. Her primary area of research is on the materials of American artists of the late 19th and early 20th century. Address: The Sherman Fairchild Center for the Conservation of Works on Paper, Metropolitan Museum of Art, 1000 Fifth Avenue, New York, NY 10028. Email: rebecca.capua@metmuseum.org.

  • In terms of manufacturers, there is a select group that stands out for their commitment to quality, innovation, and reliability

  • Polyvinyl Butyral Resin (PVB) is a solvent Resin synthesized by the acetal reaction of Polyvinyl Alcohol (PVA) and butyraldehyde in contact with coal.

    Because Pvb Resin itself contains a lot of hydroxyl groups, it can bridge with some thermosetting resins to improve the properties of chemicals and film hardness.

    Because PVB resin has the above excellent characteristics, it is widely used in adhesive safety glass intermediate film of automobile and building, rust cutting primer, baking paint, wood paint, printing ink, adhesive of electronic ceramics and printed circuit board, adhesive between metal and metal, between metal and plastic, modifier of hot-melt adhesive, iron dimension waterproof processing of textile, etc. A variety of new industrial applications are also continuously developed and applied.

    The general characteristics of PVB are as follows:

    The appearance of polyvinyl butyral (PVB) resin is white spherical porous particles or powder, and its specific gravity is 1:1; However, the filling density is only 0.20 ~ 0.35g/ml.

    Thermal properties

    The glass transfer temperature (TG) of polyvinyl butyral (PVB) resin ranges from 50 ℃ of low degree of recombination to 90 ℃ of high degree of recombination; The glass transfer temperature can also be adjusted by adding an appropriate amount of Plasticizer to reduce it below 10 ℃.

    Mechanical properties

    The coating of polyvinyl butyral (PVB) resin has good water resistance, water resistance and oil resistance (it is resistant to aliphatic, mineral, animal and vegetable oils, but not to sesame oil). PVB is widely used in printing inks and coatings because it contains high hydroxyl groups and has good dispersibility to pigments.

    In addition, its chemical structure contains both hydrophobic acetal and acetic ACID groups and hydrophilic hydroxyl groups, so PVB has good adhesion to glass, metal, plastic, leather and wood.

    Chemical reaction

    Any chemical that can react with secondary alcohol will also react with PVB. Therefore, in many applications of PVB, it is often used with thermosetting resin to bridge and harden with the hydroxyl group of PVB, so as to achieve the characteristics of chemical resistance, solvent resistance and water resistance.

    Of course, films with different characteristics (such as hardness, toughness, impact resistance, etc.) can be prepared according to different types of thermosetting resin and different mixing ratio with PVB.

    Safety properties

  • Titanium Dioxide A Versatile Chemical Compound

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  • Zn 2 Si0 4 +2n NH 3 +2H 2 0 → 2 [Zn (NH 3 ) n ] ( OH ) 2 + Si0 2 \

  • Packaging containing this additive has been shown to decrease ethylene production in fruit, thus delaying the ripening process and prolonging shelf life (4Trusted Source).

  • It is a white crystalline powder, which is a mixture of zinc sulfide and barium sulfate. The more zinc sulfide it contains, the stronger the hiding power and the higher the quality. The density of lithopone is 4.136~4.34/cm3 and it is insoluble in water. It easily decomposes when exposed to acid to produce hydrogen sulfide gas, but does not work when exposed to hydrogen sulfide and alkaline solutions.

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  • There’s also concern that exposure to the mineral over time, even in small amounts, can build up in the body, particularly in the kidneys, spleen and liver. Although most of the mineral is excreted in feces, there is evidence that a small percentage may remain in bodily organs.

  • JECFA also evaluated estimates of dietary exposure to titanium dioxide, estimating the maximum 95th percentile of exposure to be 10 mg/kg BW per day. Overall, considering the low oral absorption of titanium dioxide as a food additive, the committee reaffirmed the ADI “not specified” that was established at the 13th meeting.

  • Titanium dioxide (TiO2) is a versatile compound widely utilized in various industries, particularly in the production of paints, coatings, plastics, and paper. The accurate determination of titanium dioxide content is essential for quality control purposes in these manufacturing processes. Among the various methods available for quantifying TiO2, gravimetric analysis stands out due to its reliability and accuracy. This article explores the gravimetric determination of titanium dioxide, its significance in factory settings, and the technical processes involved.


  • Consumers seeking the best titanium dioxide products are turning towards brands that prioritize sustainability
  • In conclusion, TIO2 pigment manufacturers play a crucial role in advancing color technology, promoting sustainability, and catering to diverse market needs. Their commitment to research and development ensures that this essential pigment continues to evolve, meeting the demands of a rapidly changing world while preserving the integrity of our environment.
  • One of the best ways to find a reliable rutile titanium dioxide supplier is to conduct thorough research and due diligence. This may involve reading customer reviews, conducting site visits, and requesting samples for testing. By taking the time to carefully evaluate potential suppliers, you can ensure that you are making an informed decision.
  • The factory's production process is a testament to precision and optimization. Raw materials, primarily ilmenite, rutile, and anatase ores, undergo a rigorous refining process that includes crushing, leaching, and solvent extraction methods. These steps ensure the purity and consistency required for high-quality pigments. Following this, gaseous chlorination converts the refined ore into titanium tetrachloride, setting the stage for the final synthesis of titanium dioxide through the oxidation of titanium tetrachloride in a heated environment.
  • Another critical advantage of using TiO2 in pigments is its non-toxic nature. Unlike some traditional pigments that may contain heavy metals or other harmful substances, TiO2 is recognized as safe by regulatory bodies around the world. This attribute allows manufacturers to develop products that are not only visually appealing but also meet stringent health and safety requirements. As consumer awareness about health issues increases, the demand for non-toxic pigments continues to rise, further solidifying TiO2's position in the market.
  • The factory price of TiO2 fluctuates based on various factors such as raw material costs, production efficiency, and market dynamics. The titanium ore, primarily sourced from minerals like ilmenite and rutile, undergoes several stages of refinement before it can be converted into the pure white pigment we know. Each step in the process influences the final cost, making the streamlined operation of TiO2 factories paramount.

  • Research has shown that, when ingested as a food additive, titanium dioxide and its nanoparticles can impact, alter, and/or damage important protective bacteria in the gut, along with the metabolic pathways of gut bacteria.

  • In the paint and coating industry, titanium dioxide is commonly used to provide coverage and hide imperfections on surfaces. Its high refractive index allows for a strong scattering of light, resulting in a vibrant white color that is essential for achieving the desired finish in many products. This pigment also helps to improve the weather and UV resistance of paints, making them more durable and long-lasting.
  • Customer support is another important factor to consider when selecting TiO2 powder suppliers. The supplier should provide responsive and effective support throughout the ordering process, from initial inquiry to final delivery. This includes providing clear communication, addressing any concerns or issues promptly, and offering technical support as needed. A reliable supplier will go above and beyond to ensure that customers are satisfied with their products and services.
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