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Product Name: 4-Hydroxyquinoline
Synonym: 4-Quinolinol; Quinolin-4-ol; 4-hydroxy-quinolin; Intermediate of Imiquimod
Cas No.: 611-36-9
Formula: C9H7NO
MW: 145.16
EINECS No.: 210-268-2

Density: 1.3±0.1 g/cm3
Boiling point: 313.0±15.0 °C at 760 mmHg
Melting point: 200-202 °C(lit.)
Flash point: 143.1±20.4 °C
Refractive index: 1.691

HS Code: 2933490090

UN No.: 2245
Hazard class: 3 categories 
Packing level: Class III

Items of Analysis Standard of Analysis Test Results
IR Conform to IR Standard Conforms
Appearance Buff to off-white powder Off-white powder
Purity ≥98.5% 98.98%
Melting Point 199 ~206 °C 202.5~205.3°C
Moisture <0.5% 0.18%
Assay by Titrimetry
(on anhydrous basis)
≥98.0% 98.7%
Conclusion Conforms to Factory Standard

4-Hydroxyquinolineis a hydroxylated quinoline derivative with antimicrobial activity. 4-Hydroxyquinoline showed growth-inhibitory effects against intestinal bacteria. 4-Hydroxyquinoline act as sacrificial scavengers of the photogenerated oxygen species and has been shown to prevent the photodegradation of riboflavin.
Intermediate of Imiquimod.
25 kg/barrel, can also be packaged according to customer requirements. 
Store in a cool, ventilated warehouse. 
Keep away from fire and heat. 
The temperature should not exceed 37 °C. 


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