PIPES free acid, white powder
Supplier: MP BIOMEDICALS (FKA ICN BIOMED
Synonyms:
Piperazine-1,4-bis(2-ethanesulphonic acid), 2,2'-(Piperazine-1,4-diyl)diethanesulphonic acid, Piperazine-N,N'-bis-2-ethanesulphonic acid, 2,2'-(Piperazine-1,4-diyl)bis(ethanesulphonic) acid
PIPES is a zwitterionic N-substituted aminosulfonic acid "Good" buffer. Buffers can be made by adding a solution of base to PIPES free acid, titrating to the appropriate pH, or by mixing equimolar solutions of the sesquisodium salt and the disodium salt or dipotassium salt, titrating to the appropriate pH.
PIPES is used to buffer glutaraldehyde fixative solutions when fixing plant and/or animal tissue tissue samples. This will help prevent the loss of lipids. It is used to buffer glutaraldehyde and formaldehyde when fixing fungal zoospores for fluorescence microscopy and electron microscopy.
Zwitterionic Buffer ,Effective buffering range: 6.1 - 7.5 (Merck Index reports 6.0 to 8.5 ), ΔpK/ΔT: 0.0085 ,pKa: 6.8 at 25 °C ; 6.66 at 37 °C
PIPES free acid is not very water soluble (approximately 1 g/L at 100 °C) but will solubilize in 0.5 M NaOH; PIPES salts are water soluble (usually resulting in clear, colorless solutions).
Zwitterionic Buffer ,Effective buffering range: 6.1 - 7.5 (Merck Index reports 6.0 to 8.5 ), ΔpK/ΔT: 0.0085 ,pKa: 6.8 at 25 °C ; 6.66 at 37 °C
PIPES is used to buffer glutaraldehyde fixative solutions when fixing plant and/or animal tissue tissue samples. This will help prevent the loss of lipids. It is used to buffer glutaraldehyde and formaldehyde when fixing fungal zoospores for fluorescence microscopy and electron microscopy.
Formula:
C₈H₁₈N₂O₆S₂ MW: 302.37 g/mol Storage Temperature: Ambient |
MDL Number:
MFCD00006159 CAS Number: 5625-37-6 |
Specification Test Results
Identity Test | Passes |
FTIR | Conforms to Standard |
UV/Vis: OD260 (0.1 M in 0.2 M NaOH) | ≤0.05 |
UV/Vis: OD280 (0.1 M in 0.2 M NaOH) | ≤0.05 |
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