Description:

Highly purified for use in molecular biology applications. Powdered buffer component for research laboratories and biotech manufacturing.

Common Name: Tris (Hydroxymethyl) Aminomethane
CAS Number: 77-86-1
Molecular Weight: 121.1
Chemical Formula: C4H11NO3
Harmonized Code: 2922190090
Solubility: Water
Storage Temperature: Room Temperature
Moisture: Color: Heavy Metals (as Pb): Insoluble Matter: Heavy Metals: 5 ppm
pKa (20°C): 8.1 ± 0.1

Specifications:

Appearance: White Crystalline Powder
Purity (Dried Basis By GC): ≥ 99.9 %
Related Substances By GC: ≤ 0.1 %
Water: ≤ 0.2 %
Loss on Drying @ 105 oC, 3hrs: ≤ 1.0 %
Melting Point: 170 - 172 oC
APHA Color, 20% Aqueous solution: ≤ 20
Insoluble Matter: ≤ 0.005 %
Heavy Metals (as Pb): ≤ 5 ppm
Residue on Ignition: ≤ 0.5 %
Iron (Fe): ≤ 5 ppm
UV Absorbance @260nm, 10% Aqueous solution : ≤ 0.03
UV Absorbance @280nm, 10% Aqueous solution : ≤ 0.02
UV Absorbance @290nm, 40% solution in H2O: ≤ 0.20
UV Absorbance @430nm, 10% Aqueous solution : ≤ 0.004
Identification A: Pass
Identification B: Pass
Identification C: Pass
pH (5% in water): 10.0 - 11.5
Arsenic (As): ≤ 1 ppm
Chloride: ≤ 100 ppm
Copper (Cu): ≤ 1 ppm
DNase, RNase, protease: None Detected
Lead: ≤ 1 ppm
Magnesium: ≤ 1 ppm
pH (1M in H2O): 10.5 - 11.5
Residual Solvents: Conforms to USP/EP
Residue on Ignition (USP): ≤ 0.1 %
Solubility (2M In H2O): Pass
Country of Origin: USA

Research or further manufacturing use only, not for food or drug use.

The RPI brand has been serving the scientific community since 1970. Our ISO 9001:2015 and ISO GMP certifications are a testament to our dedication to quality.