Silver iodate

Silver iodate (chemical formula: AgIO₃) is an inorganic compound that is a salt formed by silver and iodic acid (HIO₃). It is known for its use in analytical chemistry as a reagent and in various chemical synthesis processes. Silver iodate is characterized by its low solubility in water, a property that is exploited in qualitative and quantitative analysis of halides.

Properties

Silver iodate is a white crystalline solid at room temperature. It has a molecular weight of 282.77 g/mol and melts at approximately 165 °C, decomposing upon further heating. Its solubility in water is quite low, which is a significant characteristic that affects its applications and handling.

Synthesis

Silver iodate can be synthesized by reacting silver nitrate (AgNO₃) with potassium iodate (KIO₃) in an aqueous solution. The reaction leads to the precipitation of silver iodate, which can be filtered and dried: \[AgNO_3 + KIO_3 \rightarrow AgIO_3 + KNO_3\]

Applications

Due to its low solubility in water, silver iodate is used in the volumetric and gravimetric analysis of halide ions. It is also employed in the preparation of other silver compounds and in various organic synthesis reactions as a catalyst or reagent.

Safety

Handling silver iodate requires caution as it is considered hazardous. It can cause irritation to the skin, eyes, and respiratory system. Appropriate personal protective equipment (PPE) such as gloves and goggles should be worn when working with this chemical. It should also be stored in a cool, dry place, away from incompatible materials.

See Also

• Silver nitrate
• Potassium iodate
• Analytical chemistry
• Inorganic chemistry