cas 13463-67-7 manufacturers

At the present JECFA meeting, the committee considered additional toxicological studies relevant to the safety assessment of the chemical that investigated its toxicokinetics, acute toxicity, short-term toxicity, long-term toxicity and carcinogenicity, genotoxicity, and reproductive and developmental toxicity, as well as special studies addressing its short-term initiation/promotion potential for colon cancer. The experts acknowledged that a large number of toxicological studies have been conducted using test materials, including nanoparticles, having size distributions and physico-chemical properties not comparable to real-world uses of titanium dioxide as a food additive. The studies on non-representative materials were evaluated by JECFA, but the committee concluded that such studies are not relevant to the safety assessment of the additive.

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cas 13463-67-7 manufacturers2025-08-16 06:55
1991

Having thus described the origin and uses of the pigment, we now come to the question, what is lithopone? It is, in short, a chemical compound usually consisting of 30.5 per cent zinc sulphide, 1.5 per cent zinc oxide and 68 per cent barium sulphate, but these proportions vary slightly in the different makes. Lithopone of this composition is sold as the highest grade, either as red seal or green seal, as it best suits the idea of the manufacturer. Many manufacturers, especially in Europe, sell and also export other brands under other seals, containing 24, 20, 18 and as little as 12 per cent of zinc sulphide with very small percentages of zinc oxide, the balance being usually barium sulphate, but sometimes certain portions of China clay or gypsum (calcium sulphate) or whiting (calcium carbonate). Such brands are not a chemical compound, but mechanical mixtures of the chemically compounded lithopone and the admixtures referred to.

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cas 13463-67-7 manufacturers2025-08-16 06:16
2034

One of the key factors affecting TiO2 manufacturing is the choice of raw materials. Rutile and anatase are the two most common forms of TiO2, each with its own unique properties and applications. Rutile is known for its higher refractive index and hardness, making it suitable for use in coatings, plastics, and other high-performance applications. Anatase, on the other hand, has better photocatalytic activity and is often used in environmental protection and solar energy applications.

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cas 13463-67-7 manufacturers2025-08-16 04:42
1537