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Tris material number and pack size:
Material Number Pack Size
10153265103 custom fill
Will be supplied as "Tris-(hydroxymethyl)-aminomethane". Unit of measure is "kg".
Buffer for diagnostic tests, such as tests for aminotransferases.
Use Tris as a buffer in diagnostic reagents, especially in tests for aminotransferases or γ-glutamyltransferase.
Nomenclature: Tris(hydroxymethyl)-amminomethane
Formula: C4H11NO3
Molecular weight: 121.1 D
Suggested pH range: 7.0-9.0
Appearance: Colorless, odorless crystallizate
Solubility: Clear, colorless solution in water (c=100 mg/mL), free of fuzz
Flow properties: Passes
Melting range: +168 to +171°C
Conductivity (water, 1 μS, +25°C): ≤110 μS
pH value (c=6 mg/mL, in water): 10.0-11.0
Tris (titrimetric, based on dry weight): 99.5-100.5%
Water (K. Fischer): ≤0.2%
Sulfate ash (with concentrated H2SO4 at +600°C): ≤0.05%
Fe (AAS): ≤1 ppm
As (AAS): ≤1 ppm
Heavy metals (as Pb): ≤1 ppm
Reducing substances (KMnO4, 0.002 mol/L): ≤3 mL/100 mg
Acetone (GC): ≤0.05%
Methanol (GC): ≤0.05%
Cl (turbidimetric test with AgNO3): ≤20 ppm
Bioburden: ≤100 CFU/g
A300 (against water, c=100 mg/mL): ≤0.020
A405 (against water, c=100 mg/mL): ≤0.004
Stability: At +15 to +25°C within specification range for 24 months. Protect from light.