Ingredient

HYDROXY TETRAMETHYLPIPERIDINE OXIDE

✓ EU Allowed

Identification

CAS Number 2226-96-2
EINECS / EC 218-760-9
CosIng Ref 96746
Chemical Name 1-Oxyl-2,2,6,6-tetramethyl-4-hydroxypiperidine; 1-Piperidinyloxy, 4-hydroxy-2,2,6,6-tetramethyl-; 1-λ1-Oxidanyl-2,2,6,6-tetramethylpiperidin-4-ol 2,2,6,6-tetramethylpiperidine-1,4-diol; 4-Hydroxy-2,2,6,6-tetramethyl-piperidinooxy; 4-Hydroxy-2,2,6,6-tetramethylpiperidine 1-Oxyl Free Radical; 4-Hydroxy-2,2,6,6-tetramethylpiperidinoxy; 4-Hydroxy-2,2,6,6-tetramethylpiperidinoxyl; 4-HYDROXY-2,2,6,6-TETRAMETHYLPIPERIDINOXYL-; 4-Hydroxy-TEMPO; HTMPO; Hydroxy Tempo
IUPAC Name
Formula C9H18NO2
Mol. Weight 172.24 g/mol
SMILES CC1(CC(CC(N1[O])(C)C)O)C
InChIKey UZFMOKQJFYMBGY-UHFFFAOYSA-N

Function & Classification

Primary Function ANTIOXIDANT

EU Regulatory Status

🇪🇺
✓ Allowed — EU Reg. 1223/2009

Safety Profile

No toxicology data available yet for this ingredient.

Check SCCS opinions or CIR reports for published safety assessments.

NOAEL · Dermal Absorption % · Sensitization

Formulation Guidelines

Usage level, pH range, solubility and addition phase not yet available.

Usage Level % · Addition Phase · Solubility

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Documents

External Resources