Tris-(hydroxymethyl)aminomethan 99.0-101.0% (dry basis)

About this item

Synonyms: 2-Amino-2-(hydroxymethyl)propane-1,3-diol(tris), Tromethamine, Tris(hydroxymethyl)methylamine, 2-Amino-2-(hydroxymethyl)propane-1,3-diol, 2-Amino-2-(hydroxymethyl)-1,3-propanediol, Trizma(R) base, TRIS base, THAM

CAS Number:77-86-1

Formula:NH₂C(CH₂OH)₃

MDL Number:MFCD00004679

Merck Index:14,09772

Boiling Pt:219…220 °C (10 mmHg)

Melting Pt:171…172 °C

Storage Temperature:Ambient

EINECS:201-064-4

:GHS07

Specifications

Environmentally Preferable:

Specifications

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

Specification Test Results

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