PIPES, Free Acid (CAS 5625-37-6)

Usage :

• This product is a high quality reagent, but has not been evaluated for use in cell culture. Please employ appropriate contaminant testing and/or sterilization techniques for the intended application.


• PIPES free acid is not very soluble in water (only 1 g per L at 100°C)1, but its salts are very soluble in water at the pH normally used as a buffer. PIPES will form a clear, colorless solution in 1 N NaOH, and is soluble to 20% (w/w) in 1 N NaOH. PIPES becomes soluble as the pH rises above pH 7 (it is converted to the salt form).

Appearance :

Crystalline powder

Physical State :

Solid

Solubility :

Soluble in 1M NaOH (0.5 M at 20° C), water (~1 g/L at 100° C), and 0.5 N NaOH (0.1 M).

pH :

useful in the range of 6.1-7.5

Storage :

Store at room temperature

Melting Point :

>300° C (lit.)(dec.)

Boiling Point :

499.21° C (Predicted)

Density :

1.51 g/cm³ (Predicted)

Refractive Index :

n²⁰_D 1.57 (Predicted)

pK Values :

pK_a 1: < 3 at 25 C pK_a 2: 6.8 at 25 C pK_a: 6.66 at 37C

WGK Germany :

3

PubChem CID :

Merck Index :

14: 7479

MDL Number :

MFCD00006159

EC Number :

227-057-6

Beilstein Registry :

817713

SMILES :

C1CN(CCN1CCS(=O)(=O)O)CCS(=O)(=O)O