TRIS Hydrochloride -- CAS No: 1185-53-1

CAS Registry Number 1185-53-1
Name TRIS Hydrochloride
Synonyms TRIS Hydrochloride, TRIS hydrochloride, Tris(hydroxymethyl)aminomethane hydrochloride
Molecular Formula NH2C(CH2OH)3• HCl
Molecular Weight 157.60
Molecular Structure TRIS HCL Structure

Specification

Test T5503, Ultra Pure T5505, Ultra BioPure
Price
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Appearance White powder White powder
Assay (by titration, on dried basis) ≥ 99.0% ≥ 99.0%
Solubility (1% solution in H2O) Clear, complete and colorless Clear, complete and colorless
Identification (by IR) Conforms to structure Conforms to structure
Melting Point -- --
Water (105°C for 3 hours) ≤ 0.4% ≤ 0.4%
Water (KF) ≤ 0.5% ≤ 0.5%
pH (1% solution in water) 3.7 – 4.7 3.7 – 4.7
pKa (@ 20ºC) 8.0 – 8.4 8.0 – 8.4
UV Absorption (@280nm) ≤ 0.05 ≤ 0.05
UV Absorption (@260nm) ≤ 0.05 ≤ 0.05
Residue on Ignition ≤ 0.1% ≤ 0.1%
Insoluble Matter -- Passes filter test
Heavy Metals as Lead ≤ 0.0005% ≤ 0.0005%
Biological Impurity Testing
Test T5503, Ultra Pure T5505, Ultra BioPure
Endotoxin (0.1% solution in H2O) -- ≤ 0.10 EU/mL
Bioburden -- ≤ 100 CFU/g
Trace Impurity Testing
Test T5503, Ultra Pure T5505, Ultra BioPuree
Iron (Fe) ≤ 0.0001% ≤ 0.0001%
Specification Sheet
Specification Sheet TRIS HCL TRIS HCL

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