Product Name

  • Name

    3,5-Dichloro-4-hydroxypyridine

  • EINECS 241-267-5
  • CAS No. 17228-70-5
  • Density 1.52 g/cm3
  • Solubility
  • Melting Point 56-59 °C(lit.)
  • Formula C5H3Cl2NO
  • Boiling Point 242.6 °C at 760 mmHg
  • Molecular Weight 163.991
  • Flash Point 100.5 °C
  • Transport Information
  • Appearance white to off-white solid
  • Safety 26-36
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 17228-70-5 (3,5-Dichloro-4-hydroxypyridine)
  • Hazard Symbols HarmfulXn
  • Synonyms 4(1H)-Pyridone,3,5-dichloro- (8CI);3,5-Dichloro-4-pyridinone;
  • PSA 33.12000
  • LogP 2.09400

3,5-Dichloro-4-hydroxypyridine Chemical Properties

The Molecular formula of  3,5-Dichloro-4-hydroxypyridine(17228-70-5): C5H3Cl2NO
The Molecular Weight of  3,5-Dichloro-4-hydroxypyridine(17228-70-5): 163.99
Molecular Structure :
Melting point: 56-59 °C(lit.)
Flash Point: 100.5 °
Boiling Point: 242.6 °C at 760 mmHg 
Density of 3,Index of Refraction: 1.585 
5-Dichloro-4-hydroxypyridine (17228-70-5): 1.52 g/cm3 
Vapour Pressure: 0.0336 mmHg at 25°C
Appearance of 3,5-Dichloro-4-hydroxypyridine (17228-70-5):  white to off-white solid

3,5-Dichloro-4-hydroxypyridine Uses

3,5-Dichloro-4-hydroxypyridine (17228-70-5) is used as pharmaceutical intermediate.

3,5-Dichloro-4-hydroxypyridine Safety Profile

Hazard Codes :  Xn,Xi (Harmful;Irritant)
Risk Codes : R36/37/38 (Irritating to eyes, respiratory system and skin.)
Safety Description : S26;S36 (In case of contact with eyes, rinse immediately with plenty of water and seek medical advice; Wear suitable protective clothing.)
WGK Germany : 3
PackingGroup : III
Safety: WARNING: Irritates skin and eyes, harmful if swallowed

3,5-Dichloro-4-hydroxypyridine Standards and Recommendations

Purity of 3,5-Dichloro-4-hydroxypyridine (17228-70-5) (%): 99.0 min. (Titration) 
Moisture (%): 0.5 max.
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