Chemical Properties of 1-Piperidinyloxy, 4-hydroxy-2,2,6,6-tetramethyl- (CAS 2226-96-2)

InChI

InChI=1S/C9H18NO2/c1-8(2)5-7(11)6-9(3,4)10(8)12/h7,11H,5-6H2,1-4H3

InChI Key

UZFMOKQJFYMBGY-UHFFFAOYSA-N

Formula

C9H18NO2

SMILES

CC1(C)CC(O)CC(C)(C)N1[O]

Molecular Weight¹

172.24

CAS

2226-96-2

Other Names

• Piperidinooxy, 4-hydroxy-2,2,6,6-tetramethyl-
• Tanol
• Tempol
• Tetramethylpiperidino-N-oxyl
• Tetramethylpiperidinol N-oxyl
• TMPN
• 2,2,4,4-Tetramethyl-4-Piperidinol N-oxide
• 2,2,6,6-Tetramethyl-4-hydroxypiperidin-1-oxyl
• 2,2,6,6-Tetramethyl-4-hydroxypiperidinooxy
• 2,2,6,6-Tetramethyl-4-hydroxypiperidinooxy radical
• 2,2,6,6-Tetramethyl-4-hydroxypiperidyl 1-oxyl
• 2,2,6,6-Tetramethyl-4-oxypiperidine-1-oxyl
• 2,2,6,6-Tetramethyl-4-piperidinol nitroxide
• 2,2,6,6-Tetramethyl-4-piperidinol N-oxyl
• 2,2,6,6-Tetramethyl-4-piperidinol 1-oxyl
• 2,2,6,6-Tetramethyl-4-piperidinol-1-oxy
• 2,2,6,6-Tetramethylpiperidine-N-oxyl-4-ol
• 4-Hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl
• 4-Hydroxy-2,2,6,6-tetramethylpiperidinooxy
• 4-Hydroxy-2,2,6,6-tetramethylpiperidinooxy radical
• 4-Hydroxy-2,2,6,6-tetramethylpiperidinooxyl
• 4-Oxypiperidol
• 4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy
• 1-Oxyl-2,2,6,6-tetramethyl-4-piperidinol
• 2,2,6,6-Tetramethyl-4-piperindiol 1-oxyl
• 2,2,6,6-Tetramethylpiperidinol-4-oxyl-1
• 4-Hydroxy-2,2,6,-tetramethylpiperidyl-1-oxy
• 4-Hydroxy-2,2,6,-tetramethylpiperidyl-1-oxyl
• 4-Hydroxy-2,2,6,6-tetramethylpiperidine-N-oxy
• 4-Hydroxy-2,2,6,6-tetramethylpiperidinoxy
• Piperidinyloxy, 4-hydroxy-2,2,6,6-tetramethyl-
• 2,2,6,6-Tetramethyl-4-piperidinol 1-oxide
• 4-Hydroxy-2,2,6,6-tetramethylpiperidine N-oxide
• 4-Hydroxy-2,2,6,6-tetramethylpiperidinoxyl
• NR I
• Nitroxyl 2

• ω : Acentric Factor.
• Δ_cH°_solid : Standard solid enthalpy of combustion (kJ/mol).
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fH°_solid : Solid phase enthalpy of formation at standard conditions (kJ/mol).
• Δ_subH : Enthalpy of sublimation at a given temperature (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• IE : Ionization energy (eV).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• P_c : Critical Pressure (kPa).
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• V_c : Critical Volume (m³/kmol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
ΔsubH	[101.50; 101.50]	kJ/mol	[293.00; 305.50]
ΔsubH	101.50 ± 1.60	kJ/mol	293.00	NIST
ΔsubH	101.50 ± 5.20	kJ/mol	305.50	NIST

Similar Compounds

Find more compounds similar to 1-Piperidinyloxy, 4-hydroxy-2,2,6,6-tetramethyl-.

Sources

• Cheméo Relay (1.0)
• Cheméo Relay (1.0, beta) ⚠️ Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
• Crippen Method
• Crippen Method
• McGowan Method
• NIST Webbook

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