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2,4-Dihydroxypyridine Structure

2,4-Dihydroxypyridine

Chemical Properties

Melting point 272-276 °C (lit.)
Boiling point 208.19°C (rough estimate)
Density  1.3113 (rough estimate)
refractive index  1.4260 (estimate)
storage temp.  Inert atmosphere,Room Temperature
solubility  DMSO, Methanol
form  powder
pka pK1:1.37(+1);pK2:6.45(0);pK3:13(+1) (20°C)
color  light yellow
Water Solubility  6.211g/L(20 ºC)
BRN  108533
InChI InChI=1S/C5H5NO2/c7-4-1-2-6-5(8)3-4/h1-3H,(H2,6,7,8)
InChIKey ZEZJPIDPVXJEME-UHFFFAOYSA-N
SMILES C1(=O)NC=CC(O)=C1
CAS DataBase Reference 626-03-9(CAS DataBase Reference)
FDA UNII LQ01OR5OK4

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H315-H319-H335
Precautionary statements P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-37/39
WGK Germany  3
RTECS  UV1146800
HazardClass  IRRITANT
HS Code  29339900
NFPA 704:
1
2 0

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2,4-Dihydroxypyridine Chemical Properties,Usage,Production

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