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1196-57-2

Basic Information
CAS No.: 1196-57-2
Name: 2-Quinoxalinone
Article Data: 130
Cas Database
Molecular Structure:
Molecular Structure of 1196-57-2 (2-Quinoxalinone)
Formula: C8H6N2O
Molecular Weight: 146.148
Synonyms: 2-Quinoxalinol(7CI);1,2-Dihydroquinoxalin-2-one;2-Hydroxyquinoxaline;2(1H)-Quinoxalinone;2-Quinoxalone;3-Quinoxalinone;NSC 13154;
EINECS: 214-815-6
Density: 1.31 g/cm3
Melting Point: 271-272 °C
Boiling Point: 363.4 °C at 760 mmHg
Flash Point: 173.6 °C
Solubility: N/A
Appearance: N/A
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 26-36/39-37/39
Transport Information: N/A
PSA: 46.01000
LogP: 1.33540
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    Product Name: 2-Quinoxalinone CAS: 1196-57-2 MF: C8H6N2O MW: 146.15 EINECS: 214-815-6 Mol File: 1196-57-2.mol 2-Quinoxalinone Structure 2-Quinoxalinone Chemical Properties Melting point 271-272 °C (lit.) Boiling point

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Chemistry

MF: C8H6N2O
MP:271-272°C
MW: 146.146040 g/mol
Flash Point: 173.6 °C
EINECS: 214-815-6
IUPAC
: 1H-quinoxalin-2-one
Product Name: 2-Quinoxalinone
Enthalpy of Vaporization: 63.34 kJ/mol 
Boiling Point: 363.4 °C at 760 mmHg  ]
Vapour Pressure: 8.65E-06 mmHg at 25°C 
Synonyms: 2-quinoxalinol ; 2-Quinoxalinone ; 2-Hydroxyuinoxalin ; Quinoxalin-2-OL ; 1,2-Dihydroquinoxalin-2-one ; 2-(1H)-Quinoxalinone ; 2(1H)-Quinoxalinone ; 2-Quinoxalone
Product Categories: Building Blocks;Heterocyclic Building Blocks;Quinoxalines
CAS DataBase Reference :1196-57-2(CAS DataBase Reference)
Following is the molecular structure of 2-QUINOXALINOL (1196-57-2):

 

Uses

2-Quinoxalinone (1196-57-2) is an organic phosphorus insecticide parathion quinoline intermediates, is also a pharmaceutical intermediate.

Toxicity Data With Reference

1.    

ivn-mus LD50:178 mg/kg

    CSLNX*    U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) NX#00285 .

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

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

Safety Information of 2-Quinoxalinone (1196-57-2):
Hazard Codes:  Xi 
Xi  Irritant 
 Risk Statements : 36/37/38( Irritating to eyes, respiratory system and skin )
Safety Statements : 26-36/39-37/39 (In case of contact with eyes, rinse immediately with plenty of water and seek medical advice;Wear suitable protective clothing and eye/face protection ;Wear suitable gloves and eye/face protection )
RTECS : VD3630000
 

Analytical Methods

 The Analytical Methods of 2-QUINOXALINOL (1196-57-2):HPLC,NMR

Specification

The preparation method of 2-QUINOXALINOL (1196-57-2) is based on o-phenylenediamine and chloroacetic acid as starting material, the first synthesis of 2 - hydroxy -  dihydro- Quinoxaline ( hereinafter referred to dihydro- ), and then hydrogen peroxide, to be 2 - Hydroxyquinoxaline. Will chloroacetic acid, water added to the 1000L Enamel Reactor, stirring to dissolve, then add o-phenylenediamine, and constantly stirring, in batches into precipitated calcium carbonate, temperature and reaction some time. Cooling, add sodium hydroxide solution, mixing the material break. Adding hydrogen peroxide, temperature response some time. Serve hot filtered to remove residues, and in the filtrate with concentrated hydrochloric acid, filtration, drying, that is to be 2 - Hydroxyquinoxaline.
Now with the glyoxylic acid line, good quality and high yield.