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Iron chromium oxide8/14/2023 ![]() ![]() The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. More information about CAS and the CAS registry can be found here. A substance identified primarily by an EC or list number may be linked with more than one CAS number, or with CAS numbers that have been deleted. The CAS number is the substance numerical identifier assigned by the Chemical Abstracts Service, a division of the American Chemical Society, to substances registered in the CAS registry database. CAS (Chemical Abstract Service) registry number The EC or list number is the primary substance identifier used by ECHA. If the substance was not covered by the EC Inventory, ECHA attributes a list number in the same format, starting with the numbers 6, 7, 8 or 9. More information about the EC Inventory can be found here. The EC Inventory is a combination of three independent European lists of substances from the previous EU chemicals regulatory frameworks (EINECS, ELINCS and the NLP-list). The EC Number is the numerical identifier for substances in the EC Inventory. Some substance identifiers may have been claimed confidential, or may not have been provided, and therefore not be displayed. ![]() The substance identifiers displayed in the InfoCard are the best available substance name, EC number, CAS number and/or the molecular and structural formulas. Producers of iron oxide and chromium oxide pigments can be found under members (full description).Īdditional technical, ecological and legislative aspects of iron oxide and chromium oxide pigments can be found in the brochures "Safe handling of pigments", "Ceramic decorating materials" and "Colourants for food contact plastics".The ‘Substance identity’ section is calculated from substance identification information from all ECHA databases. In addition chromium oxides are used due their high hardness as a grinding and polishing material and in break linings. High purity iron oxide pigments are used for food colouration, cosmetic and pharmaceutical applications. ![]() Special iron oxides are used in technical applications such as magnetic tapes. Paints, plastics and paper are coloured for decorative and functional purposes. ![]() Materials for civil construction are coloured to achieve soil like appearance. The field of application of iron- and chromium oxide pigments is very wide. The natural occurrence is in basalt rocks.īoth iron oxide pigments and chromium green pigments produced by VdMi members are ecologically and physiologically safe. Synthetic iron oxides show in relation to natural products higher colour strength, high reproducibility of the colour shade and higher chemical purity and therefore dominate the market.Ĭhromium oxide green pigments are based on trivalent Chromium and are physically and chemically extremely resistant. Iron oxides are the oldest known pigments and were used as natural pigments already in the stone ages. They are offered in the colours red, yellow and black with remarkable high light resistance and chemical stability. The most widely used coloured pigments worldwide are iron oxide pigments. ![]()
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