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Contact SupplierProduct name: Allantoin
Alias: 5-Ureidohydantoin; Glyoxyldiureide; Glyoxylic diureide; Cordianine; Glyoxyldiureid; (2,5-Dioxo-4-imidazolidinyl)urea
Molecular formula: C4H6N4O3
Molecular weight: 158.12
CAS RN: 97-59-6
EINECS No.: 202-592-8
Density: 1.33g/cm3
Quality Standards: USP 23
Grade:Industrial Grade/Daily chemical grade/Pharmaceutical grade
Properties: White crystalline powder, no odor and taste
Identification:Qualified
Content (potentiometric titration), % :98.5 min.
Melting point (degree Celsius) : 225 min.
Drying loss, % :0.2 max.
Residue on ignition, % :0.1 max.
pH value (0.5% aqueous solution, 25degree) 4.0~6.0
Optical rotation (0.5% aqueous solution):-0.10~+0.10°
Acidity and alkalinity: Qualified
Reducing sustances: Qualified
Related substances (TLC): Qualified
Arsenic (As), %: 0.0002 max.
Lead (Pb), %: 0.001 max.
Solubility : 1.Solubility increases significantly with the raising of temperature
2. Poorly soluble in propylene glycol, ethyl alcohol and glycerin