2,2,6,6-Tetramethyl-4-piperidone hydrochloride
- CAS NO.:33973-59-0
- Empirical Formula: C9H18ClNO
- Molecular Weight: 191.7
- MDL number: MFCD00012768
- EINECS: 251-769-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-03-13 15:00:32
What is 2,2,6,6-Tetramethyl-4-piperidone hydrochloride?
Chemical properties
white to slightly beige crystalline powder
The Uses of 2,2,6,6-Tetramethyl-4-piperidone hydrochloride
2,2,6,6-Tetramethyl-4-piperidone hydrochloride has been used as a reagent injected in the micromixer using a Rheodyne injection valve for introducing discrete sample pulses into the miniaturised-SYNthesis and Total Analysis System (πSYNTAS).
Purification Methods
Purify the salt by recrystallisation from EtOH/Et2O, MeCN or Me2CO/MeOH. The free base has m 37-39o (after sublimation), b 102-105o/18mm, and the hydrate has m 56-58o (wet Et2O); the hydrobromide has m 203o (from EtOH/Et2O), and the picrate has m 196o (from aqueous EtOH). [Sandris & Ourisson Bull Soc Chim Fr 345 1958, Beilstein 21 H 246, 21 I 273, 21 II 222, 21 III/IV 3278, 21/6 V 538.]
Properties of 2,2,6,6-Tetramethyl-4-piperidone hydrochloride
| Melting point: | 198 °C (dec.)(lit.) |
| storage temp. | Sealed in dry,Room Temperature |
| color | White to off-white |
| BRN | 4154554 |
| CAS DataBase Reference | 33973-59-0(CAS DataBase Reference) |
| EPA Substance Registry System | 4-Piperidinone, 2,2,6,6-tetramethyl-, hydrochloride (33973-59-0) |
Safety information for 2,2,6,6-Tetramethyl-4-piperidone hydrochloride
| Signal word | Warning |
| Pictogram(s) |
![]() Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 2,2,6,6-Tetramethyl-4-piperidone hydrochloride
New Products
Cyclopropane-1,1-dicarboxylic acid Cefuroxime EP Impurity-A N-Nitroso hydroxy Cetrizine EP Impurity-A Noradrenaline EP Impurity D/Noradrenaline Methyl Ether Cetirizine EP Impurity A/Cetirizine CBHP Impurity Lantanoprost rc B Clidinium Bromide Impurity tert-Butyl (2S)-[1-amino-3-(4-iodophenyl)-1-oxopropan-2-yl]carbamate 4-amino-2-fluoro-N- methylbenzamide 5-Chloro-3- Methyl -1,3-2-benzoxazol-2(3H)-one N-(2-chloropyrimidin-4-yl)-N,2,3- trimethyl-2H- indazol 6-amine N-Boc-1,4-butanediamine 4-Bromo-2-fluoro-N-methylbenzamide valeronitrile 3-chlorobenzyl cyanide 3,4 Dimethoxy Benzylcyanide 3,4 Diethoxy Benzylcyanide 2-Chloro Benzylcyanide 3-Hydroxypropionitrile 5-azidovalericacid 6,6'-bis(difluoromethoxy)-2,2'-bis((3,4-dimethoxypyridin-2-yl)methylsulfinyl)-1H,1'H-5,5'-bibenzo[d]imidazole (1-((2'-(2-((1-((2'-(2H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methyl)-2H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methanol (1-((2'-(1-((1-((2'-(2H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methyl)-1H-tetrazol-5-yl)biphenyl-4-yl)methyl)-2-butyl-4-chloro-1H-imidazol-5-yl)methanol (4-Methoxyphenyl) hydrazine HydrochlorideRelated products of tetrahydrofuran








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