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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.

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

Key Spec Table

CAS #Empirical Formula
7365-45-9C₈H₁₈N₂O₄S

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391338-100GM
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      391338-1KG
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          391338-25GM
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              391338-500GM
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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
                  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
                  Biological Information
                  Purity≥99% by titration (dry basis)
                  Physicochemical Information
                  ContaminantsChloride: ≤0.01%; Sodium: ≤0.1%; Sulfate: ≤0.05%
                  Heavy metals≤1 ppm
                  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.
                  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.
                  Global Trade Item Number
                  Catalogue Number GTIN
                  391338-100GM 07790788049805
                  391338-1KG 07790788049812
                  391338-25GM 04055977190168
                  391338-500GM 07790788049829