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375368 Millipore

HEPES, Free Acid, ULTROL Grade, 1 M Solution - CAS 7365-45-9 - Calbiochem

Synonym: 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid, HEPES, N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid)

  • CAS Number 7365-45-9

  • Empirical Formula (Hill Notation) C8H18N2O4S

  • Molecular Weight 238.30

  •  Beilstein/REAXYS Number 883043

  •  MDL number MFCD00006158

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Properties

Quality Level   100
assay   ≥99% dry basis (titration)
form   solution
mfr. no.   Calbiochem®
storage condition   OK to freeze
storage conditions   +15C to +30C
color   clear colorless
useful pH range   6.8 - 8.2
pKa (25 °C)   7.5
shipped in   ambient
SMILES string   OCCN1CCN(CC1)CCS(O)(=O)=O
InChI   1S/C8H18N2O4S/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14/h11H,1-8H2,(H,12,13,14)
InChI key   JKMHFZQWWAIEOD-UHFFFAOYSA-N

Description

General description

A zwitterionic N-substituted aminosulfonic acid buffer absorbance: <0.05 at 260 nm, 1 M, H2O; pKa: 7.55 at 20°C). Active in the pH range of 6.0 to 8.5.

Packaging

100 ml in Plastic ampoule

500 ml in Glass bottle

Warning

Toxicity: Standard Handling (A)

Physical form

1.0 M solution of Cat. No. 391338. Sterile-filtered.

Safety & Documentation

Safety Information

Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

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