Tris(hydroxymethyl)aminomethane (TRIS, Trometamol) 99.0-101.0% (dry basis)

Supplier: Thermo Scientific
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J22674.A1 J22674.A7 J22674.36
ALFAJ22674.A1EA 415 SGD
ALFAJ22674.A1 ALFAJ22674.A7 ALFAJ22674.36
Tris(hydroxymethyl)aminomethane (TRIS, Trometamol) 99.0-101.0% (dry basis)
Tris(hydroxymethyl)aminomethane (TRIS, Trometamol)
Formula: NH₂C(CH₂OH)₃
Boiling Pt: 219…220 °C (10 mmHg)
Melting Pt: 171…172 °C
Storage Temperature: Ambient
MDL Number: MFCD00004679
CAS Number: 77-86-1
EINECS: 201-064-4
Merck Index: 14,09772
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Specification Test Results

Assay (Dry Basis) 99.0 - 101.0%
Assay Absorbance (250 nm, 1 M, 1 cm) ≤0.1
Assay Absorbance (290 nm, 40%, 1 cm) ≤0.2
Loss on Drying ≤1%
pH (5%, H₂O) 10.0 - 11.5
Identification (FTIR) Conforms
Residue on Ignition ≤0.1%
Insoluble Material ≤0.005%
Heavy Metals (Pb) ≤5 ppm
Iron (Fe) ≤5 ppm
pKa (20 °C) 8.30 ±0.15

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