PIPES dipotassium salt

≥99% (titration)

Piperazine-1,4-bis(2-ethanesulfonic acid) dipotassium salt, 1,4-Piperazinediethanesulfonic acid dipotassium salt
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level


≥99% (titration)


crystalline powder

useful pH range

6.1 - 7.5

pKa (25 °C)



water: 0.5 g/mL, clear, colorless

Featured Industry

Diagnostic Assay Manufacturing

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General description

PIPES (1,4-Piperazinediethanesulfonic acid) is a zwitterionic buffer. It is a stable buffer and is used majorly in fixation solutions. PIPES is inert towards enzymatic and non-enzymatic reactions. However, it generates artefacts in transmission electron microscope imaging.


PIPES (1,4-Piperazinediethanesulfonic acid) dipotassium salt has been used as buffer for fluorescence polarization microscopy studies of kinesin-microtubule binding. It is suitable for use as a component of PHEM buffer ([K-PIPES], HEPES, EGTA, and MgSO4) used during rinsing and blocking steps in immunofluorescence imaging of HeLa cells. It is also suitable for use as buffer for purification of tubulin.


25, 100, 500 g in poly bottle
1 kg in poly bottle

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Imaging the Drosophila retina: zwitterionic buffers PIPES and HEPES induce morphological artifacts in tissue fixation
Nie J, et al.
BMC Developmental Biology, 15(1), 10-10 (2015)
Use of single molecule fluorescence polarization microscopy to study protein conformation and dynamics of kinesin-microtubule complexes
Benoit MPMH and Sosa H
Single Molecule Analysis, 15(1), 199-216 (2018)
Dynamic phosphorylation of NudC by Aurora B in cytokinesis
Weiderhold KN
PLoS ONE, 11(4), e0153455-e0153455 (2016)
Helical alignment inversion of microtubules in accordance with a structural change in their lattice
Shikinaka K, et al.
Soft Matter, 11(19), 3869-3874 (2015)
Nina Marie Pedersen et al.
The Journal of cell biology, 219(8) (2020-06-02)
Cancer cells break tissue barriers by use of small actin-rich membrane protrusions called invadopodia. Complete invadopodia maturation depends on protrusion outgrowth and the targeted delivery of the matrix metalloproteinase MT1-MMP via endosomal transport by mechanisms that are not known. Here...

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