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H7006

Sigma-Aldrich

HEPES sodium salt

≥99.0% (titration)

Synonym(s):

Sodium 2-(4-(2-hydroxyethyl)piperazin-1-yl)ethanesulfonate, 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid sodium salt, N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid) sodium salt

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About This Item

Empirical Formula (Hill Notation):
C8H17N2NaO4S
CAS Number:
Molecular Weight:
260.29
EC Number:
MDL number:
UNSPSC Code:
12161700
PubChem Substance ID:
NACRES:
NA.25
Pricing and availability is not currently available.

Quality Level

Assay

≥99.0% (titration)

form

powder

storage condition

dry at room temperature

technique(s)

HPLC: suitable

color

white

pH

10-12 (1 M in water)

useful pH range

6.8-8.2

pKa (25 °C)

7.5

solubility

water: 0.1 M, clear, colorless

suitability

suitable for mass spectrometry

application(s)

diagnostic assay manufacturing
general analytical (
)
life science and biopharma
metabolomics

storage temp.

room temp

SMILES string

[Na+].OCCN1CCN(CC1)CCS([O-])(=O)=O

InChI

1S/C8H18N2O4S.Na/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14;/h11H,1-8H2,(H,12,13,14);/q;+1/p-1

InChI key

RDZTWEVXRGYCFV-UHFFFAOYSA-M

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General description

HEPES salt, or 4-(2-hydroxyethyl)piperazine-1-ethanesulfonic acid sodium salt, is a zwitterionic biological buffer that is widely used in biological and biochemical research. It has a buffering range of pH 6.8 to 8.2, making it ideal for a variety of research applications. HEPES is also a popular choice for buffering cell culture media, offering advantages such as lower cell toxicity in comparison to alternatives like Tris and phosphate.

Widely utilized in cell biology and biochemical research, HEPES proves its versatility in protein purification and extraction protocols, owing to its stability across a broad pH range and minimal metal ion binding. Additionally, HEPES proves valuable in various biological and biochemical processes, including immunoprecipitation, cell lysis, and live cell imaging, making it a versatile tool in diverse research applications.

Application

HEPES buffer finds application in:
  • Most studies with metal ions
  • Substitute for Tris and phosphate in studies with metal ions
  • Grinding buffer in plant studies
  • Running buffer in gel electrophoresis
  • Buffer in electroporation studies
  • Bradford or bicinchoninic acid (BCA) assays
  • Extraction buffer to prevent damage of proteins in red blood cells

It has been used:
  • as a buffer component in the preparation of a low sucrose buffer[1]
  • as a buffer component in a modified Hanks′ solution, a pseudo-physiological solutions[2]

Features and Benefits

  • Tested to confirm low levels of heavy metal contamination, ensuring suitability for various applications
  • Highly soluble in water
  • Negligible metal ion binding
  • Less toxic to cells than other buffers such as Tris and phosphate
  • Stable in a wide pH range

Packaging

The DRYPOUR®packaging system for high-quality hygroscopic salts DRYPOUR® packaging:
  • The current DRYPOUR® packaging configuration is in a 50L nestable drum
  • 25KG-DP are the standard prepack offering
  • Smaller volumes can be put in the same drum for variable configurations
The benefits of DRYPOUR®:
  • Improves operational efficiency by reducing material preparation time and increasing operator safety
  • Minimizes caking of hygroscopic salts
  • Offers triple protection: against moisture inside and outside, and against contamination
How does the DRYPOUR®packaging system Improve your operational efficiency?
  • This state-of-the-art design packaging system minimizes caking, thus significantly reducing the time needed for material preparation
  • PE drum with our new tamper-evident seal, a polyethylene liner with integrated desiccant bags and a breathable interior Tyvek® liner
  • Desiccant bags are firmly integrated into the polyethylene liner
  • Triple protection delivers two invaluable results:
  1. Dramatically reduced caking
  2. No contamination risk from the desiccant

Physical form

Lyophilized, spray dried, or crystallized material.

Other Notes

For additional information on our range of Biochemicals, please complete this form.

Legal Information

DRYPOUR is a registered trademark of Merck KGaA, Darmstadt, Germany
Tyvek is a registered trademark of E. I. du Pont de Nemours and Company

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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