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HEPES, Free Acid, Ultrapure Bioreagent, (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid), For Liquid Chromatography and Molecular Biology Buffers , J.T.Baker®

Supplier: Avantor Performance Materials
Synonyms: 4-(2-Hydroxyethyl)piperazin-1-ylethanesulfonic acidHEPES free acid

4018-01 4018-04 4018-07 4018-06
Free acid for liquid chromatography and molecular biology buffers. Lot analysis on label.

Formula: C₈H₁₈N₂O₄S
MW: 238,31 g/mol
Melting Pt: 210 - 215 °C
Density: 1,448 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00006158
CAS Number: 7365-45-9
EINECS: 230-907-9
Merck Index: 13,04672
Specification Test Results
Assay (C₈H₁₈N₂O₄S) >= 99 %
Appearance (fine, white, crystalline powder) Passes Test
Sodium (USP Id.) Passes Test
DNase Activity Passes Test
RNase Activity Passes Test
Protease Activity Passes Test
Absorbance of a 0.1M Solution (1-cm path vs water) at - 260 nm \<= 0.05
Absorbance of a 0.1M Solution (1-cm path vs water) at - 280 nm \<= 0.05
pH of 5% Solution at 25°C 5.0 - 6.5
Ash (sulfated) \<= 0.2 %
Arsenic and Antimony (as As) \<= 0.05 ppm
ACS - Heavy Metals (as Pb) \<= 5 ppm
Trace Impurities - Iron (Fe) \<= 5 ppm
pK^a at 20°C, For Information Only
QC Supervisor or equivalent to check supplier's COA to ensure proper chemical form. Passes Test



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Size Packaging Supplier No. VWR Catalog Number Unit Price Quantity
100 g white poly bottle,blue T/E cap 4018-01 JT4018-1 Each (100g) Retrieving Restricted
500 g white poly bottle,blue T/E cap 4018-04 JT4018-4 Each (500g) Retrieving Restricted
5 kg polyethylene pail: screw top 4018-06 JT4018-6 Each (5kg) Retrieving Restricted
12 kg polyethylene pail: screw top 4018-07 JT4018-7 Each (12kg) Retrieving Restricted
restricted In order to process your orders without delay, we request that you provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide identification that includes your business name and shipping address via email or fax 484.881.5997 referencing your VWR account number . Acceptable forms of identification are:

  • State issued document with your organization's Federal Tax ID Number
  • State issued document with your organization's Resale Tax ID Number
  • City or County issued Business License
  • State Department of Health Services License
  • Any other ID issued by the State that includes the business name and address

* Please note if your account is within the State of California two of these pieces of identification will be required.
VWR will not lift restrictions for residential shipping addresses.

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