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391338 HEPES, Free Acid, ULTROL® Grade - CAS 7365-45-9 - Calbiochem

A zwitterionic N-substituted aminosulfonic acid buffer. Useful in the pH 6.8-8.2 range. Has a pKa of 7.48 at 25°C. Absorbance (1.0 M, H2O, 260 nm):≤0.05.

MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.

Synonyms: N-2-Hydroxyethylpiperazine-Nʹ-2-ethanesulfonic Acid

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391338
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Overview

Replacement Information

Key Spec Table

CAS #Empirical Formula
7365-45-9C₈H₁₈N₂O₄S

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      Description
      OverviewA zwitterionic N-substituted aminosulfonic acid buffer. Useful in the pH 6.8-8.2 range. Has a pKa of 7.48 at 25°C.
      Absorbance (1.0 M, H2O, 260 nm):≤0.05.
      Absorbance (1.0 M, H2O, 280 nm): ≤0.04
      Catalogue Number391338
      Brand Family Calbiochem®
      SynonymsN-2-Hydroxyethylpiperazine-Nʹ-2-ethanesulfonic Acid
      References
      Product Information
      CAS number7365-45-9
      FormWhite crystalline powder
      Hill FormulaC₈H₁₈N₂O₄S
      Chemical formulaC₈H₁₈N₂O₄S
      PKA7.25 - 7.75 at 20°C
      Structure formula ImageStructure formula Image
      Quality LevelMQ100
      Applications
      Biological Information
      Purity≥99% by titration (dry basis)
      Physicochemical Information
      ContaminantsChloride: ≤0.01%; Sodium: ≤0.1%; Sulfate: ≤0.05%
      Heavy metals≤1 ppm
      Dimensions
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      RTECSTL6809000
      Safety Information
      R PhraseR: 36/37/38

      Irritating to eyes, respiratory system and skin.
      S PhraseS: 26-37/39

      In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
      Wear suitable gloves and eye/face protection.
      Product Usage Statements
      Storage and Shipping Information
      Ship Code Ambient Temperature Only
      Toxicity Irritant
      Storage +15°C to +30°C
      Do not freeze Ok to freeze
      Special InstructionsFollowing reconstitution, store at room temperature (20°C). Stock solutions are stable for up to 6 months at 20°C.
      Packaging Information
      Transport Information
      Supplemental Information
      Specifications
      Global Trade Item Number
      Catalogue Number GTIN
      391338-100GM 07790788049805

      Documentation

      HEPES, Free Acid, ULTROL® Grade - CAS 7365-45-9 - Calbiochem SDS

      Title

      Safety Data Sheet (SDS) 

      HEPES, Free Acid, ULTROL® Grade - CAS 7365-45-9 - Calbiochem Certificates of Analysis

      TitleLot Number
      391338

      Brochure

      Title
      Bulk Product Guide
      Data Sheet

      Note that this data sheet is not lot-specific and is representative of the current specifications for this product. Please consult the vial label and the certificate of analysis for information on specific lots. Also note that shipping conditions may differ from storage conditions.

      Revision26-October-2009 RFH
      SynonymsN-2-Hydroxyethylpiperazine-Nʹ-2-ethanesulfonic Acid
      DescriptionA zwitterionic N-substituted aminosulfonic acid buffer. HEPES has its maximum buffering capacity very near the pH of mammalian tissue fluids (pKa of 7.31 at 37°C). Exhibits no metal binding and has a small temperature dependent ΔpKa of -0.014/°C.
      FormWhite crystalline powder
      CAS number7365-45-9
      RTECSTL6809000
      Chemical formulaC₈H₁₈N₂O₄S
      Structure formulaStructure formula
      Purity≥99% by titration (dry basis)
      ContaminantsChloride: ≤0.01%; Sodium: ≤0.1%; Sulfate: ≤0.05%
      SolubilityH₂O (1 M)
      Storage +15°C to +30°C
      Do Not Freeze Ok to freeze
      Special InstructionsFollowing reconstitution, store at room temperature (20°C). Stock solutions are stable for up to 6 months at 20°C.
      Toxicity Irritant
      Merck USA index14, 4654

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      Categories

      Life Science Research > Inhibitors and Biochemicals > Biochemicals > Buffers