Mohr's Salt

Mohr's salt is a chemical compound known scientifically as ammonium iron(II) sulfate, with the formula (NH₄)₂Fe(SO₄)₂·6H₂O. It appears as colorless or pale green crystals and is commonly used in laboratories for standardizing solutions and as a source of ferrous iron. It is notable for being more stable and easier to handle than other iron salts, making it valuable in analytical chemistry, especially in titrations involving iron ions. Its name honors the scientist Karl Friedrich Mohr, who contributed significantly to the development of titration methods.