Tromethamine

Tromethamine (also known as Tris, Tris buffer, or THAM) is an organic compound commonly used in biochemistry and molecular biology. It is a hydroxymethyl derivative of aminomethane and is widely utilized as a buffer in biological and chemical research.

Chemical Properties

Tromethamine has the chemical formula C₄H₁₁NO₃ and a molecular weight of 121.14 g/mol. It is a white crystalline powder that is highly soluble in water. The compound has a pKa of 8.1 at 25°C, making it an effective buffer in the pH range of 7 to 9.

Applications

Tromethamine is extensively used in biochemistry and molecular biology for its buffering capacity. It is often employed in electrophoresis, chromatography, and enzyme reactions. In clinical settings, it is used to treat metabolic acidosis and to maintain the pH of blood and urine.

Buffering Agent

As a buffering agent, Tromethamine helps maintain a stable pH in various biological and chemical systems. It is particularly useful in cell culture media, protein purification, and nucleic acid isolation.

Medical Uses

In medicine, Tromethamine is used to treat conditions like metabolic acidosis, where it helps to neutralize excess acid in the blood. It is also used in some intravenous solutions to maintain the pH balance.

Safety and Handling

Tromethamine should be handled with care, as it can cause irritation to the skin, eyes, and respiratory tract. Proper personal protective equipment (PPE) such as gloves and goggles should be worn when handling the compound.

Related Compounds

• Tris-HCl
• Tris base
• Tris buffer

See Also

• Buffer solution
• pH
• Biochemistry
• Molecular biology