391333

HEPES sodium salt

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

• Sinonimo/i: HEPES, Sodium Salt, ULTROL^® Grade, N-2-Hydroxyethylpiperazine-Nʹ-2-ethanesulfonic Acid, Na
• Formula empirica (notazione di Hill): C₈H₁₇N₂O₄S · Na
• Numero CAS: 75277-39-3
• Peso molecolare: 260.29
• Codice UNSPSC: 12161704
• NACRES: NA.25

Proprietà

• Livello qualitativo: 100
• Saggio: ≥99% dry basis (titration)
• Stato: solid
• Produttore/marchio commerciale: Calbiochem^®
• Condizioni di stoccaggio: OK to freeze; desiccated (hygroscopic)
• Colore: white
• pKa (20 °C): 7.6
• Solubilità: water: 1.0 M
• Anioni in tracce: chloride (Cl^-): <0.01%; sulfate (SO₄^2-): <0.05%
• Cationi in tracce: heavy metals: <1 ppm
• Condizioni di spedizione: ambient
• Temperatura di conservazione: 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; RDZTWEVXRGYCFV-UHFFFAOYSA-M

Descrizione

Descrizione generale

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.

Applicazioni

• 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).

Attenzione

Toxicity: Standard Handling (A)

Note legali

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

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

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 3
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable