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Basic Information
CAS No.: 83-81-8
Name: O-PHTHALIC ACID BIS(DIETHYLAMIDE)
Molecular Structure:
Molecular Structure of 83-81-8 (O-PHTHALIC ACID BIS(DIETHYLAMIDE))
Formula: C16H24 N2 O2
Molecular Weight: 276.379
Synonyms: 1,2-Benzenedicarboxamide,N,N,N',N'-tetraethyl- (9CI); Phthalamide, N,N,N',N'-tetraethyl- (6CI,7CI,8CI);Analetil; Cardiovital; Geastigmol; Geastimol; N,N,N',N'-Tetraethylphthalamide;NSC 16071; Neo-Cardiamine; Neospiran; Phthalethamide; Unispiran;neo-Cardiamine; o-Phthalic acid bis[diethylamide]; o-Phthalylbis(diethylamide)
Density: 1.0209 (rough estimate)
Melting Point: 39°
Boiling Point: bp 175-180°
Flash Point: 196.9oC
Safety: Poison by subcutaneous route. When heated to decomposition it emits toxic vapors of NOx.
PSA: 40.62000
LogP: 2.65060
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Chemistry

Molecular Formula: C16H24N2O2
Molecular Weight: 276.42 g/mol
EINECS: 201-504-5 
Appearance: crystals 
Solubility: soluble in water, physiol saline
Density: 1.038 g/cm3 
Melting Point: 39°C
Boiling Point: 453.5 °C at 760 mmHg 
Flash Point: 196.9 °C
Freely Rotating Bonds: 6
Polar Surface Area: 40.62 Å2
Index of Refraction: 1.525
Molar Refractivity: 81.54 cm3
Molar Volume: 266 cm3
Polarizability: 32.32 10-24cm3
Surface Tension: 39.6 dyne/cm
Enthalpy of Vaporization: 71.3 kJ/mol
Vapour Pressure: 2.05E-08 mmHg at 25°C 
The Cas Register Number of Geastigmol is 83-81-8.The chemical synonyms of Geastigmol (CAS NO.83-81-8) are 1,2-benzenedicarboxamide, N~1~,N~1~,N~2~,N~2~-tetraethyl- ; N,N,N',N'-tetraethylbenzene-1,2-dicarboxamide ; N,N,N',N'-Tetraethylphthalamide ; o-Phthalic acid bis[diethylamide] ; Orthophthalic Acid Didiethylamide ; 1,2-Benzenedicarboxamide, N,N,N',N'-tetraethyl- ; Analetil ; Bis-diethylamid kyseliny ftalove ; Cardiovital ; Coretonin ; Geastigmol  ; Geastimol  ; N,N,N', N'-Tetraethylphthalamide ; N,N,N',N'-Tetraethyl-1,2-benzenedicarboxamide ; neo-Cardiamine ; Neospiran ; o-Phthalic acid bis(diethylamide) ; o-Phthalyl-bis-diethylamide ; Phthalamide, N,N,N',N'-tetraethyl- ; Phthalethamide ; Tetraethylbis (phthalamide)  ; Tetraethylbis(phthalamide) ; Unispiran .The molecular structure of Geastigmol (CAS NO.83-81-8) is.

Uses

  Geastigmol (CAS NO.83-81-8) is is used as pharmaceutical intermediate .

Toxicity Data With Reference

1.    

scu-rbt LD50:30 mg/kg

     85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,344.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Poison by subcutaneous route. When heated to decomposition it emits toxic vapors of NOx.