Detail of "2226-96-2"

CAS Number:
2226-96-2
Name:
4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy
Molecular Structure:
Formula:
C₉H₁₈NO₂
Molecular Weight:
172.28
Deleted CAS:
105269-77-0|119227-61-1|13075-58-6|3174-32-1|38854-37-4|68541-96-8|70939-25-2|900145-52-0|908588-62-5
Synonyms:
4-Hydroxy-2,2,6,6-tetramethylpiperidino-1-oxyl;Piperidinooxy,4-hydroxy-2,2,6,6-tetramethyl- (7CI,8CI);1-Oxyl-2,2,6,6-tetramethyl-4-piperidinol;2,2,6,6-Tetramethyl-4-hydroxy-1-piperidinyloxy radical;2,2,6,6-Tetramethyl-4-hydroxypiperidin-1-oxyl;2,2,6,6-Tetramethyl-4-hydroxypiperidine N-oxide;2,2,6,6-Tetramethyl-4-hydroxypiperidine-1-oxyl;2,2,6,6-Tetramethyl-4-hydroxypiperidinooxy;2,2,6,6-Tetramethyl-4-hydroxypiperidinyl-1-oxyl;2,2,6,6-Tetramethyl-4-hydroxypiperidinyloxyl radical;2,2,6,6-Tetramethyl-4-oxypiperidine-1-oxyl;2,2,6,6-Tetramethyl-4-piperidinol 1-oxyl;2,2,6,6-Tetramethylpiperidine-4-hydroxy-1-oxyl;4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinoxy;4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy;4-Hydroxy-2,2,6,6-tetramethylpiperidine-N-oxy;
EINECS:
218-760-9
Melting Point:
69-71 °C(lit.)
Solubility:
soluble in water
Appearance:
orange crystals
Hazard Symbols:
Xn,Xi
Risk Codes:
22-36/37/38-36/38
Safety:
26-36-37/39-36/37/39-27 Details

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Reference

Spin probe behavior in epoxy polymers: dependence on average crosslink density: Spin probe behavior in epoxy polymers: dependence on average crosslink density. Brown, I. M.; Sandreczki, T. C. (McDonnell Douglas Res. Lab., McDonnell Douglas Corp., St. Louis, MO 63166, USA). Polym.Some commonly used reagents like 25085-99-8 and 13093-04-4 are used in this experiment. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 23(2), 199 (English) 1982. CODEN: ACPPAY. ISSN: 0032-3934. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) The EPR spectra of spin probes 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (I) [2226-96-2] and 2,2,6,6-tetramethyl-1,2,3,6-tetrahydropyridin-1-oxyl (II) [3264-93-5] in amine-cured DER 332 [25085-99-8] of different crosslink d. were studied as a function of temp. (293-410 K) and CH2Cl2 solvent content. The differences of the temp.- and solvent-dependent EPR spectra of I and II spin probes were due to their size and H-bonding ability. The agreement of the spin probe data with the modified WLF and Fujita-Doolittle equations showed that the motions of the nitroxide are sensitive to the free vol. of the polymer. The differences in polymer rigidity and nitroxide mobility which could not be obsd. by varying the temp. beaome apparent by varying the solvent content. .

Mechanisms of antioxidant action: Mechanisms of antioxidant action. The role of nitroxyl radicals as chain-breaking acceptor antioxidants in the mechanodegradation of rubber. Nethsinghe, L. P.; Scott, G. (Univ. Aston, Gosta Green/Birmingham B4 7ET, UK). Eur. Polym. J., 20(3), 213-17 (English) 1984. CODEN: EUPJAG. ISSN: 0014-3057. DOCUMENT TYPE: Journal CA Section: 39 (Synthetic Elastomers and Natural Rubber) 4-Hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy (I) [2226-96-2], an effective deactivator of macroalkyl radicals at ambient temps., became partially attached to natural rubber during mechanochem. degrdn. in a shearing mixer at ambient temps. The main mechanism responsible for the antidegradant activity of I under shearing conditions was direct oxidn. of mechanochem. produced macroalkyl radicals to species contg. conjugated unsatn. The moderate thermal antioxidant activity of I after vulcanization was due to the formation of the hydroxylamine. However, the latter also rapidly converted back to I and was also probably lost by volatilization under air oven conditions. I had little antioxidant activity under thermal oxidative conditions due to its inability to compete with O for alkyl radicals.

Detail of "2226-96-2"

4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

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CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

CAS No.2226-96-2 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy

Reference