2,2,6,6-Tetramethyl-4-piperidone , >98.0%(T) , 826-36-8

Synonym(s):
Triacetoneamine

CAS NO.：826-36-8

Empirical Formula: C9H17NO

Molecular Weight: 155.24

MDL number: MFCD00005975

EINECS: 212-554-2

PRODUCT Properties

• Melting point: 59-61 °C
• Boiling point: 105-105°C/18mm
• Density: 0.9796 (rough estimate)
• refractive index: 1.4680 (estimate)
• Flash point: 73°C
• storage temp.: 2-8°C
• solubility: DMSO, Methanol
• pka: 9.20±0.60(Predicted)
• form: Solid
• color: Pale Orange to Light Brown
• Water Solubility: 249g/L at 20℃
• InChI: 1S/C9H17NO/c1-8(2)5-7(11)6-9(3,4)10-8/h10H,5-6H2,1-4H3
• InChIKey: JWUXJYZVKZKLTJ-UHFFFAOYSA-N
• SMILES: CC1(C)CC(=O)CC(C)(C)N1
• LogP: 1.32 at 25℃
• CAS DataBase Reference: 826-36-8(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Piperidinone, 2,2,6,6-tetramethyl-(826-36-8)
• EPA Substance Registry System: 4-Piperidinone, 2,2,6,6-tetramethyl- (826-36-8)

Description and Uses

Triacetonamine (CAS 826-36-8), also known as 2,2,6,6-tetramethyl-4-piperidone or TAA, is a key intermediate in the synthesis of HALS (hindered amine light stabilisers); Their ability to effectively inhibit polymer degradation by scavenging free radicals is based on their sterically hindered amine functional groups, which are capable of forming stable N-oxides as active intermediates (the Denysov cycle). TAA is also used in the synthesis of pharmaceuticals, piperidine nitroso radicals and pyrrolidone derivatives. For example, the oxidation of TAA or its derivatives yields the corresponding tetramethylpiperidine-N-oxide, namely TEMPO; the latter can be used as a polymerisation inhibitor, molecular weight regulator or oxidation catalyst[2].

2,2,6,6-Tetramethyl-4-piperidinone (cas# 826-36-8) is a compound useful in organic synthesis.

Safety

• Symbol(GHS): GHS05,GHS07
• Signal word: Danger
• Hazard statements: H290-H302-H314-H317-H412
• Precautionary statements: P260-P273-P280-P301+P330+P331-P303+P361+P353-P305+P351+P338
• PPE: dust mask type N95 (US), Eyeshields, Gloves
• Hazard Codes: C,Xn
• Risk Statements: 34-22-36/37/38
• Safety Statements: 45-36/37/39-26-22-36/37
• WGK Germany: 2
• RTECS: TO0127900
• TSCA: TSCA listed
• HS Code: 29333990
• Storage Class: 8B - Non-combustible corrosive hazardous materials
• Hazard Classifications: Acute Tox. 4 Oral; Aquatic Chronic 3; Eye Dam. 1; Met. Corr. 1; Skin Corr. 1B; Skin Sens. 1A
• REACH Registrations: Active