Caffeine is a white crystaline powder used primarily as a stimulate in the consumption of beverages and food. It is also found in prescription medications.
Main applications of Caffeine
Used mainly in soft drinks, energy drinks, dietary supplments, beverages, pharmacalogical agent, inhalant supplement, protein bars, hot chocolate and breakfast cereals.
Specification of Caffeine
Molecular weight: 194.2
CAS number: 58-08-2
>95% through 40 mesh
>95% through 80 mesh
Appearance: White or almost white, crystalline powder or silky, white or almost white, crystals.
Solubility: Sparingly soluble in water, freely soluble in boiling water, slightly soluble in ethanol (96 percent). It dissolves in concentrated solutions of alkali benzoates or salicylates.
Caffeine meets all requirements of EP8.0, BP2014, USP37, FCC8, when tested according to these compendia.
Chemical reaction: Positive reaction
Infrared absorption: Conforms to the caffeine Reference Spectrum
Appearance of solution: Clear, colorless (EP/BP)
Heavy metals: ≤10ppm (USP)
Acidity: Not more than 0.2ml of 0.01M sodium hydroxide（EP/BP）
Organic impurities: Any individual impurity ≤0.1% (USP)
Organic impurities: Total impurities ≤0.1% (USP)
Related substances: Each impurity A, B, C, D, E, F ≤0.10% （EP/BP）
Related substances: Each unspecified impurity ≤0.10% （EP/BP）
Related substances: Total impurities ≤0.1% （EP/BP）
Lead: ≤1mg/kg (FCC)
Other alkaloids: No precipitation generated (FCC)
Melting point: 235ºC~237.5ºC (FCC)
Readily carbonizable substances: Conform to the requirement (FCC)
Loss on drying: ≤0.5%(EP/BP)
Sulphate ash: ≤0.1%(USP)
Handling - Storage
Keep in a tightly closed container,stored in a natural temperature ,ventilated area.
Protect against physical damage. Containers of this material may be hazardous when empty since they retain product residues (dust ,solids); observe all warnings and precautions listed for the product.
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