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Basic Information
CAS No.: 53233-89-9
Name: 5-CHLORO-2 3-PYRIDINEDIOL 95
Molecular Structure:
Molecular Structure of 53233-89-9 (5-CHLORO-2 3-PYRIDINEDIOL 95)
Formula: C5H4 Cl N O2
Molecular Weight: 145.545
Synonyms: 5-Chloro-2,3-dihydroxypyridine;5-Chloro-2,3-pyridinediol; NSC 137836
EINECS: 258-441-1
Density: 1.56g/cm3
Melting Point: 295 °C (dec.)(lit.)
Boiling Point: 297.6°Cat760mmHg
Flash Point: 133.8°C
Solubility: Soluble in water.
Hazard Symbols: Xi
Risk Codes: R36/37/38;
Safety: 1448371
PSA: 53.35000
LogP: 1.14620
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Chemistry

Molecular structure of 5-Chloro-2,3-dihydroxypyridine (CAS NO.53233-89-9) is:

Product Name: 5-Chloro-2,3-dihydroxypyridine
CAS Registry Number: 53233-89-9
IUPAC Name: 5-chloro-3-hydroxy-1H-pyridin-2-one
Molecular Weight: 145.54376 [g/mol]
Molecular Formula: C5H4ClNO2
XLogP3-AA: 0.4
H-Bond Donor: 2
H-Bond Acceptor: 2 
EINECS: 258-441-1
Melting Point: 295 °C (dec.)(lit.)
Surface Tension: 58.4 dyne/cm
Density: 1.56 g/cm3
Flash Point: 133.8 °C
Enthalpy of Vaporization: 62.35 kJ/mol
Boiling Point: 297.6 °C at 760 mmHg
Vapour Pressure: 0.000135 mmHg at 25°C 
Product Categories: Pyridine series;Pyridine;Chloropyridines;Halopyridines

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intravenous 180mg/kg (180mg/kg)   U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#06392,

Safety Profile

Safty information about 5-Chloro-2,3-dihydroxypyridine (CAS NO.53233-89-9) is:
Hazard Codes: IrritantXi,Xn
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-37/39-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39:Wear suitable gloves and eye/face protection. 
S36:Wear suitable protective clothing.
RIDADR: UN2811
WGK Germany: 3
RTECS: UT2810500

Specification

 5-Chloro-2,3-dihydroxypyridine , its cas register number is 53233-89-9. It also can be called 2,3-Pyridinediol, 5-chloro- ; 5-Chloro-2,3-pyridinediol ; 2(1H)-Pyridinone, 5-chloro-3-hydroxy- (9CI) ; 5-Chloro-3-hydroxy-2-pyridone .It is a greyish-beige crystalline powder.