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2654-58-2

Basic Information
CAS No.: 2654-58-2
Name: 4,4-Dimethyl-1-phenyl-3-pyrazolidone
Article Data: 3
Molecular Structure:
Molecular Structure of 2654-58-2 (4,4-Dimethyl-1-phenyl-3-pyrazolidone)
Formula: C11H14 N2 O
Molecular Weight: 190.245
Synonyms: 1-Phenyl-4,4-dimethyl-3-pyrazolidinone;1-Phenyl-4,4-dimethyl-3-pyrazolidone; 4,4-Dimethyl-1-phenyl-3-pyrazolidinone; 4,4-Dimethyl-1-phenyl-3-pyrazolidone;4,4-Dimethylphenidone; Dimezone; NSC 215239
EINECS: 220-181-1
Density: 1.087 g/cm3
Melting Point: 167-172 °C(lit.)
Boiling Point: °Cat760mmHg
Flash Point: 195 ºC
Solubility: Soluble in water
Appearance: white to light orange or pink crystalline powder
Hazard Symbols:
Risk Codes: R25;R36/37/38;R43   
Safety: 26-36/37-45-37/39-28A-24
Transport Information: UN 2811
PSA: 32.34000
LogP: 1.95780
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Chemistry

Molecular Structure:

Molecular Formula: C11H14N2O
Molecular Weight: 190.2417
IUPAC Name: 4,4-Dimethyl-1-phenylpyrazolidin-3-one
Synonyms of 4,4-Dimethyl-1-phenyl-3-pyrazolidone (CAS NO.2654-58-2): 4,4-Dimethylphenidone ; Dimezone ; EINECS 220-181-1 ; NSC 215239 ; 3-Pyrazolidinone, 4,4-dimethyl-1-phenyl-
CAS NO: 2654-58-2
Product Categories: Heterocyclic Compounds ; Building Blocks ; Heterocyclic Building Blocks ; Pyrazoles
Melting point: 167-172 °C 
Index of Refraction: 1.537
Molar Refractivity: 54.64 cm3
Molar Volume: 174.9 cm3
Surface Tension: 36.6 dyne/cm
Density of 4,4-Dimethyl-1-phenyl-3-pyrazolidone (CAS NO.2654-58-2): 1.087 g/cm3

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 oral 30mg/kg (30mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

LUNGS, THORAX, OR RESPIRATION: CYANOSIS

GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"
National Technical Information Service. Vol. OTS0533633,

Safety Profile

Hazard Codes of 4,4-Dimethyl-1-phenyl-3-pyrazolidone (CAS NO.2654-58-2): ToxicT
Risk Statements: 36/37/38-43-23/24/25 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R43:May cause sensitization by skin contact. 
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed.
Safety Statements: 26-45-28-24-36/37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S28: After contact with skin, wash immediately with plenty of soap-suds. 
S24: Avoid contact with skin. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: UN 2811 6.1/PG 2
WGK Germany: 2
RTECS: UQ8710000
HazardClass: 6.1
PackingGroup: II