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2-[4-(2-Hydroxyethyl)-1-piperazinyl]ethanesulfonic Acid [Good's buffer component for biological research]
(CAS RN:7365-45-9 Product Number:H0396)


2-[4-(2-Hydroxyethyl)-1-piperazinyl]ethanesulfonic Acid
Synonym HEPES

General Information

Product Number H0396

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Purity/Analysis Method >99.0%(T)
Storage Temperature
M.F. / M.W. C8H18N2O4S=238.30
CAS RN 7365-45-9
Related CAS RN
MDL Number MFCD00006158
Packaging and Container
  • Product Details
  • Safety & Regulations


Appearance White to Almost white powder to crystal
Purity(Neutralization titration) min. 99.0 %
Absorbance max. 0.25(1mol/L, H2O, 250nm)
Absorbance2 max. 0.15(1mol/L、H2O、260nm)
Absorbance3 max. 0.10(1mol/L、H2O、320nm)
Solubility in Water almost transparency


Reaxys-RN 883043
PubChem SID 87570801
Merck Index(14) 4654
RTECS# TL6809000


Signal Word Warning
Hazard Statements
  • H315
  • :Causes skin irritation.
  • H319
  • :Causes serious eye irritation.
Precautionary Statements
  • P264
  • :Wash hands and face thoroughly after handling.
  • P280
  • :Wear protective gloves, eye protection.
  • P302+P352+P332+P313+P362+P364
  • :If on skin: Wash with plenty of soap and water. If skin irritation occurs: Get medical advice or attention. Take off contaminated clothing and wash it before reuse.
  • P305+P351+P338+P337+P313
  • :If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.


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