سدیم مولیبدات دی هیدرات

Sodium Molybdate Dihydrate is an inorganic compound commonly used as a source of molybdenum in industrial, agricultural, and chemical applications.

🏭⚗️ Production
Sodium molybdate dihydrate is produced by dissolving molybdenum trioxide in a sodium hydroxide solution at moderately elevated temperatures. Upon cooling and crystallization, the dihydrate form is obtained if the process occurs above 10 °C. If the solution is cooled below 10 °C, a different hydrate form may crystallize. Heating the dihydrate to 100 °C results in the anhydrous form of the compound.

🔬 Properties
This compound appears as a white crystalline solid with high solubility in water. It has a molar mass of approximately 241.95 g/mol and a density of about 3.78 g/cm³. Sodium molybdate dihydrate is thermally stable up to its melting point of 687 °C. It typically exhibits a neutral to slightly alkaline reaction in aqueous solution and does not emit a noticeable odor.

🧪 Applications
Sodium molybdate dihydrate is widely used in agriculture as a micronutrient in fertilizers, particularly for crops that are sensitive to molybdenum deficiency, such as legumes and cruciferous vegetables. It is also utilized as a corrosion inhibitor in water treatment systems, where it helps protect metal surfaces by acting as a non-oxidizing anodic inhibitor. Additionally, it has roles in analytical chemistry and laboratory synthesis due to its solubility and reactivity.

⚠️ Safety
Although considered to have low acute toxicity, sodium molybdate dihydrate should be handled with appropriate safety precautions. Inhalation of dust or prolonged skin contact may cause irritation, and excessive exposure may lead to effects on internal organs such as the liver and kidneys. It is also toxic to aquatic organisms, so environmental release should be avoided. Proper personal protective equipment should be used, and the compound should be stored in a cool, dry place away from incompatible materials.