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

391338
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      Overview

      Replacement Information

      Key Specifications Table

      Empirical FormulaCAS #
      C₈H₁₈N₂O₄S 7365-45-9

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      Catalog NumberAvailability Packaging Qty/Pack Price Quantity
      391338-100GM
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          Glass bottle 100 gm
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          391338-1KG
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              Glass bottle 1 kg
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              391338-25GM
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                  Plastic ampoule 25 gm
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                  391338-500GM
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                      Glass bottle 500 gm
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                      391338-5KG
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                          Fibre carton 5 kg
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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
                          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

                          Documentation

                          SDS

                          Title

                          Safety Data Sheet (SDS) 

                          Certificates of Analysis

                          TitleLot Number
                          391338

                          Brochure

                          Title
                          Detergents and Buffers Technical Bulletin
                          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