Phenylbutazone
1) CSA NO.:50-33-9
2) Molecular formula: C19H20N2O2
3) Molecular weight: 308.379
4) Assay: 98.0% ~ 102.0%

Phenylbutazone USP
 

Phenylbutazone (USP)/CAS # 50-33-9 large quantity with super quality

Characters: A white or almost white crystalline powder

Identification: 

UV spectrum: A(1%, 1cm)Maximum(650-700) at 264nm

IR absorption: Same bands the standard

Melting range: 104 to 107 °C

Heavy metals: ≤0.001%

Loss on drying: ≤0.5%

Residue on ignition: ≤0.1%

Chloride: ≤0.007%

Sulphate: ≤0.01%

Residual solvents: Methanol≤0.3%, Ethanol≤0.5%

Organic volatile impurities: Complies

Assay: 98.0% ~ 102.0%

Solubility: Freely soluble in acetone, chloroform and benzene; soluble in 

alcohol, aether and solution of sodium hydroxide; insoluble in water.

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