391333

HEPES sodium salt

ULTROL^® Grade, ≥99% dry basis (titration), zwitterionic N-substituted aminosulfonic acid buffer

• Synonyme(s) : HEPES, Sodium Salt, ULTROL^® Grade, N-2-Hydroxyethylpiperazine-Nʹ-2-ethanesulfonic Acid, Na
• Formule empirique (notation de Hill): C₈H₁₇N₂O₄S · Na
• Numéro CAS: 75277-39-3
• Poids moléculaire : 260.29
• Code UNSPSC : 12161704
• Nomenclature NACRES : NA.25

Propriétés

• Niveau de qualité: 100
• Pureté: ≥99% dry basis (titration)
• Forme: solid
• Fabricant/nom de marque: Calbiochem^®
• Conditions de stockage: OK to freeze; desiccated (hygroscopic)
• Couleur: white
• pKa (20 °C): 7.6
• Solubilité: water: 1.0 M
• Traces d'anions: chloride (Cl^-): <0.01%; sulfate (SO₄^2-): <0.05%
• Traces de cations: heavy metals: <1 ppm
• Conditions d'expédition: ambient
• Température de stockage: 15-25°C
• 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
• Clé InChI: RDZTWEVXRGYCFV-UHFFFAOYSA-M

Description

Description générale

A zwitterionic N-substituted aminosulfonic acid buffer(Absorbance: <0.10 at 260 nm, 1.0 mM, H₂O). Active in the pH range of 6.0 to 8.5. Has a pK_a of 7.6 at 20°C.

A zwitterionic N-substituted aminosulfonic acid buffer. Useful in the pH 6.8-8.2 range. Has a pK_a of 7.55 at 25°C.

Absorbance (1.0 mM, H₂O, 260 nm):<0.10.

Application

• 3,6-O-[N-(2-Aminoethyl)-acetamide-yl]-chitosan exerts antibacterial activity by a membrane damage mechanism.: This study explores the antibacterial mechanisms of a chitosan derivative, which could be related to the buffering capabilities of HEPES in maintaining the stability and exposure of functional groups necessary for antibacterial activity (Yan et al., 2016).

Avertissement

Toxicity: Standard Handling (A)

Informations légales

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

ULTROL is a registered trademark of Merck KGaA, Darmstadt, Germany

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable