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Hepes Buffer Structure

Hepes Buffer

Chemical Properties

Melting point 234-238 °C
Boiling point 408℃[at 101 325 Pa]
Density  1.07 g/mL at 20 °C
vapor pressure  0Pa at 25℃
refractive index  n20/D 1.339
storage temp.  2-8°C
solubility  H2O: 1 M at 20 °C, clear, colorless
form  powder
color  White
PH 5.0-6.5 (1Maqueous solution)
pka 7.5(at 25℃)
PH Range 7.0 - 7.6
Water Solubility  Soluble
λmax λ: 260 nm Amax: 0.06
λ: 280 nm Amax: 0.04
Merck  14,4654
BRN  883043
Stability Stable. Combustible. Incompatible with strong oxidizing agents. Protect from moisture.
InChIKey JKMHFZQWWAIEOD-UHFFFAOYSA-N
LogP -3.85 at 20℃
CAS DataBase Reference 7365-45-9(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII RWW266YE9I
EPA Substance Registry System 1-Piperazineethanesulfonic acid, 4-(2-hydroxyethyl)- (7365-45-9)

Safety

Symbol(GHS) GHS hazard pictograms
Signal wordWarning
Hazard statements H302-H315-H319-H335
Precautionary statements P261-P271-P280
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  24/25-22-36-26
WGK Germany  1
RTECS  TL6809000
TSCA  Yes
HS Code  29335995
NFPA 704:
1
2 1

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