93359

TES

BioUltra, ≥99.5% (calc. based on dry substance, T)

• Synonym(s): 2-[(2-Hydroxy-1,1-bis(hydroxymethyl)ethyl)amino]ethanesulfonic acid, N-[Tris(hydroxymethyl)methyl]-2-aminoethanesulfonic acid, TES free acid
• Empirical Formula (Hill Notation): C₆H₁₅NO₆S
• CAS Number: 7365-44-8
• Molecular Weight: 229.25
• Beilstein: 1957061
• EC Number: 230-906-3
• MDL number: MFCD00007532
• UNSPSC Code: 12161700
• PubChem Substance ID: 57653539
• NACRES: NA.25

Properties

• product line: BioUltra
• Assay: ≥99.5% (calc. based on dry substance, T)
• form: powder
• impurities: insoluble matter, passes filter test
• ign. residue: ≤0.1% (as SO₄)
• loss: ≤0.5% loss on drying, 110 °C
• pH: 3.5-5.0 (25 °C, 1 M in H₂O)
• useful pH range: 6.8-8.2
• pKa (25 °C): 7.5
• mp: ~225 °C (dec.)
• solubility: H₂O: 1 M at 20 °C, clear, colorless
• anion traces: chloride (Cl^-): ≤500 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: Al: ≤5 mg/kg; As: ≤0.1 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤200 mg/kg; Li: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Na: ≤100 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg
• λ: 1 M in H₂O
• UV absorption: λ: 260 nm A_max: 0.055; λ: 280 nm A_max: 0.045
• SMILES string: OCC(CO)(CO)NCCS(O)(=O)=O
• InChI: 1S/C6H15NO6S/c8-3-6(4-9,5-10)7-1-2-14(11,12)13/h7-10H,1-5H2,(H,11,12,13)
• InChI key: JOCBASBOOFNAJA-UHFFFAOYSA-N

Description

Application

TES is a physiological Good′s buffer (pH 74.-7.9) used in biological research applications. It is often compared to other Good′s buffers for chemistry and optimal performance in a given system.

Other Notes

Hydrogen ion buffer for biological research; Suitable buffer for epidermal cell growth at pH 7.4-7.9 where additional buffering capacity is required

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves