CAPS (buffer)

CAPS is the common name for N-cyclohexyl-3-aminopropanesulfonic acid, a chemical used as buffering agent in biochemistry. The similar substance N-cyclohexyl-2-hydroxyl-3-aminopropanesulfonic acid (CAPSO) is also used as buffering agent in biochemistry. Its useful pH range is 9.7-11.1.

CAPS[1]
Names
IUPAC name
3-(Cyclohexylamino)-1-propanesulfonic acid
Identifiers
3D model (JSmol)
ChemSpider
DrugBank
ECHA InfoCard 100.013.175
EC Number
  • 214-492-1
UNII
Properties
C9H19NO3S
Molar mass 221.32 g/mol
Melting point >300 °C
Acidity (pKa) 10.4
Hazards
GHS pictograms
GHS Signal word Warning
H302, H315, H319, H335
P261, P264, P270, P271, P280, P301+312, P302+352, P304+340, P305+351+338, P312, P321, P330, P332+313, P337+313, P362, P403+233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

See also

References


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