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Chromate salts contain the chromate anion, CrO 4. Dichromate salts contain the dichromate anion, Cr 2O 7. They are oxyanions of chromium in the +6 oxidation state and are moderately strong oxidizing agents. In an aqueous solution, chromate and dichromate ions can be interconvertible. 展开
• potassium chromate
• potassium dichromate
Chromates react with hydrogen peroxide, giving products in which peroxide, O 2, replaces one or more … 展开Hexavalent chromium compounds can be toxic and carcinogenic (IARC Group 1). Inhaling particles of hexavalent chromium compounds can cause lung cancer. Also positive associations have been observed between exposure to chromium (VI) compounds and 展开
Approximately 136,000 tonnes (150,000 tons) of hexavalent chromium, mainly sodium dichromate, were produced in 1985. Chromates and … 展开
CC-BY-SA 许可证中的维基百科文本 Chromate conversion coating - Wikipedia
Chromate conversion coating or alodine coating is a type of conversion coating used to passivate steel, aluminium, zinc, cadmium, copper, silver, titanium, magnesium, and tin alloys. The coating serves as a corrosion inhibitor, as a primer to improve the adherence of paints and adhesives, as a decorative finish, or to preserve electrical conductivity. It also provides some resistance to abrasion and …
Wikipedia · CC-BY-SA 许可下的文字Chromate Colors - yellow vs. clear. What's the difference?
网页A discussion forum on metal finishing Q&As about the difference between yellow and clear chromate coatings on steel parts. Learn about the historical and current factors that …
Chrome yellow - Wikipedia
网页Chrome yellow is a lead chromate-based pigment that has been used in art, fashion, and industry. It is the premier orange pigment for many applications, but it is also toxic, …
FAQs on Chromate Conversion Coatings - Sweeney …
网页2023年3月17日 · Learn what chromate conversion coating is, how it enhances metal parts' corrosion and electroconductivity resistance, and how to choose the right type for your needs. Find out the differences between …
Why is there a difference in the colours of K₂Cr₂O₇ and …
网页2015年4月14日 · It is a general chemistry (often unexplained) fact that the color we see is the complementary color of the wavelength of a bond's vibration. Thus, in the case of the chromate ion, we see yellow, and …
Zinc Chromate Coatings – EngineeringTechnology.org
网页Learn about zinc chromate coatings, a type of chromate conversion coating applied to zinc-plated substrates to enhance corrosion resistance and adhesion. Find out how they are made, what colors they have, and what …
What is the Difference Between Chromate and …
网页2024年1月18日 · Chromate is a chemical compound with one chromium atom and four oxygen atoms, while dichromate is a chemical compound with two chromium atoms and seven oxygen atoms. Color. Chromate ions are …
Chromate (CrO42-) - Structure, Molecular Mass, Properties and …
网页Chromates are the salts of chromic acid which contains the chromate anion with the chemical formula CrO42– and usually have an intense yellow color. Chromate is the …
Chromate Coating - an overview | ScienceDirect Topics
网页2006年2月28日 · Chromate coatings are formed by the reaction of water solutions of chromic acid or chromium salts on metals such as aluminum, zinc, and magnesium. …
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