N,N-(2-Hydroxyethyl)-2-aminoethanesulfonic acid (BES)

N,N-(2-Hydroxyethyl) -2-aminoethanesulfonic acid (BES)

Basic Information:

• CAS Number: 10191-18-1

• Chemical Name: BES (N,N-(2-Hydroxyethyl)-2-aminoethanesulfonic acid)

• Product No: B802277

• Packing / Pack Size: 100 g

• Molecular Formula: C₆H₁₅NO₅S

• Molecular Weight: 213.25 g/mol

• Appearance: White crystalline powder

• Solubility: Highly soluble in water; slightly soluble in ethanol

• Buffering Range: pH 6.4 – 7.8 (pKa ≈ 7.1)

Product Description:

BES is a good biological buffer widely used in biochemical, molecular biology, and cell-culture applications. It maintains stable pH near physiological conditions, making it ideal for enzyme assays, protein research, electrophoresis, and other laboratory studies requiring controlled pH conditions.

Applications:

• Biochemical and enzymatic studies

• Cell culture media buffering

• Protein and nucleic acid research

• Electrophoresis and diagnostic assays

• Analytical chemistry requiring stable pH

Handling and Storage:

• • Store in a tightly closed container in a cool, dry place

  • Protect from moisture and sunlight

Safety:

• May cause eye and skin irritation
• Use personal protective equipment: gloves, lab coat, and safety goggles
• Follow GHS hazard symbols for safe handling