528131

PIPES, Free Acid, ULTROL^® Grade

A zwitterionic N-substituted aminosulfonic acid useful in the pH range of 6.1-7.5. Has a pKa 6.76 at 25°C. Absorbance (0.5%, 0.25 N NaOH, 260 nm):0.18.

• Synonym(s): Piperazine-N,Nʹ- bis(2-ethanesulfonic Acid), Piperazine-N,Nʹ-bis(2-ethanesulfonic Acid)
• Empirical Formula (Hill Notation): C₈H₁₈N₂O₆S₂
• CAS Number: 5625-37-6
• Molecular Weight: 302.37
• MDL number: MFCD00006159
• UNSPSC Code: 12352200

Properties

• Quality Level: 100
• assay: ≥98% dry basis (titration)
• form: solid
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze
• color: white
• pKa (20 °C): 6.8
• solubility: aqueous buffer: 50 mg/mL; water: soluble
• cation traces: heavy metals: <10 ppm
• shipped in: ambient
• storage temp.: 15-25°C
• InChI: 1S/C8H18N2O6S2.Na/c11-17(12,13)7-5-9-1-2-10(4-3-9)6-8-18(14,15)16;/h1-8H2,(H,11,12,13)(H,14,15,16);/q;+1/p-1
• InChI key: OGGAIRCLBMGXCZ-UHFFFAOYSA-M

Description

General description

A zwitterionic N-substituted aminosulfonic acid useful in the pH range of 6.1-7.5. Has a pK_a 6.76 at 25°C.

Absorbance (0.5%, 0.25 N NaOH, 260 nm): <0.18.

Zwitterionic N-substituted aminosulfonic acid, active in the pH range of 6.0-8.5. Has a pK_a of 6.8 at 20°C.

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, store in the refrigerator (4°C). Stock solutions are stable for up to 3 months at 4°C.





From Catalog:

Desc. Field- replaced "active in the pH range 6.0-8.5"

Legal Information

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

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

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable