Shanghai Nianxing Industrial Co., Ltd
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Product Name: 3-carboxy-proxyl
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 3-Carboxy-proxyl, free radical
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2154-68-9

2154-68-9 structure

2154-68-9 structure

Name: 3-carboxy-proxyl
Chemical Name: 2,2,5,5-Tetramethyl-3-carboxypyrrolidine-N-oxyl
CAS Number: 2154-68-9
Molecular Formula: C₉H₁₇NO₃
Molecular Weight: 187.236
Catalog: analytical chemistry Standard Spectrometric standard
Create Date: 2018-06-07 13:23:30
Modify Date: 2025-08-21 18:40:01

Name	2,2,5,5-Tetramethyl-3-carboxypyrrolidine-N-oxyl
Synonyms	pca(radical) 4-carboxy-PROXYL 1-oxyl-2,2,5,5-tetramethylpyrroline-3-carboxylic acid 3-CARBOXY-PROXYL,FREE RADICAL 1-oxyl-2,2,5,5-tetramethylpyrrolidine-3-carboxylic acid radical RARECHEM AL BO 1259 3-Carboxy-2,2,5,5-tetraMethylpyrrolidine 1-Oxyl Free Radical 3-carboxy-2,2,5,5-tetramethylpyrrolidine-N-oxyl radical t517 Carboxyproxyl 3-Pyrrolidinecarboxylic acid, 1-hydroxy-2,2,5,5-tetramethyl- 4-carboxy-2,2,5,5-tetramethyl-1-pyrrolidinyloxyl radical EINECS 218-448-2 3-Carboxy-PROXYL 1-Hydroxy-2,2,5,5-tetramethyl-3-pyrrolidinecarboxylic acid MFCD00003167

Density	1.1±0.1 g/cm3
Boiling Point	307.2±31.0 °C at 760 mmHg
Melting Point	200ºC (dec.)
Molecular Formula	C₉H₁₇NO₃
Molecular Weight	187.236
Flash Point	139.6±24.8 °C
Exact Mass	187.120850
PSA	60.77000
LogP	0.30
Vapour Pressure	0.0±1.4 mmHg at 25°C
Index of Refraction	1.495
Storage condition	0-6°C

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UY6705500

CHEMICAL NAME :: 1-Pyrrolidinyloxy, 3-carboxy-2,2,5,5-tetramethyl-

CAS REGISTRY NUMBER :: 2154-68-9

LAST UPDATED :: 199706

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C9-H16-N-O3

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 2812 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: INVRAV Investigative Radiology. (Lippincott/Harper, Journal Fulfillment Dept., 2350 Virginia Ave., Hagerstown, MD 21740) V.1- 1966- Volume(issue)/page/year: 19,549,1984

Hazard Codes	Xi
Risk Phrases	36/37/38
Safety Phrases	S24/25
RIDADR	NONH for all modes of transport
RTECS	UY6705500

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