Agent Name

TEMPO

CAS Number

2564-83-2

Formula

C9-H18-N-O

Major Category

Nitrogen Compounds

Synonyms

2,2,6,6-Tetramethyl-1-piperidinyloxy; 2,2,6,6-Tetramethylpiperidine-1-oxyl; 2,2,6,6-Tetramethylpiperidinooxy; 2,2,6,6-Tetramethylpiperidinooxyl; 2,2,6,6-Tetramethylpiperidinyloxy; 2,2,6,6-Tetramethylpiperidoxyl; Tanan; Tanane; Tempo; Tetramethylpiperidine nitroxide; Tetramethylpiperidinooxy; 1-Piperidinyloxy, 2,2,6,6-tetramethyl-; Piperidinooxy, 2,2,6,6-tetramethyl-; [ChemIDplus] 2,2,6,6-Tetramethylpentamethylene nitroxide; [Merck Index] TEMPO, free radical; [Alfa Aesar MSDS] UN3263

Category

Amine Oxides

Description

Dark red solid; [Merck Index] Red crystalline solid; mp = 32-37 deg C; [Alfa Aesar MSDS]

Sources/Uses

Used in organic chemistry (radical trap, catalyst, and polymerization mediator); [Merck Index] Used as a spin label in MRI; [REPROTOX]

Comments

A severe skin and eye irritant; Causes somnolence in dermal lethal-dose studies of rabbits; [RTECS] Causes burns; [Alfa Aesar MSDS]

Exposure Assessment
Vapor Pressure

6.0E-6 mm Hg

Lethal Concentration

LCLo (rat) = 4,500 mg/m3/2hr

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Corrosive solid, basic, organic, n.o.s."

Adverse Effects
Dermatotoxin

Skin Burns

Links to Other NLM Databases
Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Other Information

No other related information on this agent was found.