Tris-HCl, Molecular Biology Grade (Tris-Hydrochloride)

Tris-HCl, Molecular Biology Grade, is sometimes used in combination with Tris base for preparation of Tris-HCl buffers.

Formula Weight: 157.56.

Properties:

• pH at 25°C (0.1M): 4.2–5.0.
• Purity: ≥99.0%.
• A₂₄₀ at 1M: ≤0.06.
• A₂₆₀, A₂₈₀, A₃₀₀, A₆₀₀ at 1M: ≤0.05.
• Melting Point: 150–152°C.
• Moisture: ≤0.5%.
• Calcium: ≤5ppm.
• Iron: ≤5ppm.
• Lead: ≤1ppm.
• Magnesium: ≤1ppm.
• Manganese: ≤1ppm.
• Copper: ≤1ppm.
• Zinc: ≤1ppm.