What Is Molybdenum Trioxide?
Molybdenum trioxide (MoO3), also known as molybdenum oxide (Ⅵ), is a widely produced molybdenum compound with CAS number 1313-27-5. It naturally occurs as the mineral molybdite and is notable for its applications due to its high heat resistance and strength.
Uses of Molybdenum Trioxide
Its uses span across being a catalyst, in the production of molybdenum metal and salts, and in enhancing the properties of metals like stainless steel by improving their heat resistance and strength. Additionally, it serves in the chemical industry as a catalyst for petroleum desulfurization and hydrocracking, among other applications.
Properties of Molybdenum Trioxide
A white or greenish-gray solid, molybdenum trioxide exhibits a melting point of 995°C and a boiling point of 1,155°C. It is soluble in ammonia water and alkali hydroxide solutions but insoluble in water, highlighting its unique chemical properties.
Types of Molybdenum Trioxide
Available as reagent products for research and as industrial materials, molybdenum trioxide caters to a diverse range of applications, from laboratory research to steel manufacturing additives.
1. Reagent Products
For laboratory use, reagent products are provided in various quantities and can include specialized forms like TEM diffraction specimens for electron microscopy.
2. Industrial Materials
In industrial applications, it is used in forms such as powders and briquettes for steel additives, pigments, and catalysts.
Other Information on Molybdenum Trioxide
1. Synthesis of Molybdenum Trioxide
Industrially, it is synthesized by roasting molybdenum disulfide, while laboratory synthesis often involves the reaction of molybdic acid solution with perchloric acid.
2. Chemical Reaction of Molybdenum Trioxide
It transitions from dihydrate to monohydrate upon losing hydration water and forms molybdate ions when dissolved in a base, showcasing its reactivity and utility in producing molybdenum metal.
3. Hazardousness of Molybdenum Trioxide and Regulatory Information
Despite its industrial value, molybdenum trioxide poses risks such as eye and respiratory irritation, potential carcinogenicity, and harm to aquatic life, necessitating strict regulatory compliance under various health and safety laws.