C8210

CHES

BioXtra, ≥99.0% (titration)

• Synonym(s): 2-(Cyclohexylamino)ethanesulfonic acid
• Empirical Formula (Hill Notation): C₈H₁₇NO₃S
• CAS Number: 103-47-9
• Molecular Weight: 207.29
• Beilstein/REAXYS Number: 2967601
• EC Number: 203-115-6
• MDL number: MFCD00003835
• UNSPSC Code: 12161700
• PubChem Substance ID: 24893031
• NACRES: NA.25

Properties

• product line: BioXtra
• assay: ≥99.0% (titration)
• form: powder
• impurities: ≤0.0005% Phosphorus (P); ≤0.1% Insoluble matter
• ign. residue: ≤0.1%
• pH: 3.0-5.0 (0.5 M in H₂O)
• useful pH range: 8.6-10.0
• pKa (25 °C): 9.3
• solubility: H₂O: 0.5 M, clear, colorless
• anion traces: chloride (Cl^-): ≤0.05%; sulfate (SO₄^2-): ≤0.05%
• cation traces: Al: ≤0.0005%; Ca: ≤0.001%; Cu: ≤0.0005%; Fe: ≤0.0005%; K: ≤0.005%; Mg: ≤0.0005%; NH₄⁺: ≤0.05%; Na: ≤0.01%; Pb: ≤0.001%; Zn: ≤0.0005%
• absorption: ≤0.05 at 280 in H₂O at 0.5 M; ≤0.08 at 260 in H₂O at 0.5 M
• application(s): diagnostic assay manufacturing
• SMILES string: OS(=O)(=O)CCNC1CCCCC1
• InChI: 1S/C8H17NO3S/c10-13(11,12)7-6-9-8-4-2-1-3-5-8/h8-9H,1-7H2,(H,10,11,12)
• InChI key: MKWKNSIESPFAQN-UHFFFAOYSA-N

Description

General description

CHES (2-(Cyclohexylamino) ethane sulfonic acid) is a derivative of amino acid taurine. It serves as a standard physiological buffer in the pH range of 8.5-9.5.

Application

CHES may be used:

• for pH adjustments and as a assay buffer in catechol oxidase activity measurements(32)
• as a buffer in electron paramagnetic resonance (EPR) spectroscopy and kinetic measurements(33)
• as a buffer for soil solution equivalent (SSE) yeast dextrose medium for screening pH optima for growth of Aridibacter nitratireducens A24_SHP-5_238^T(34)

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves