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Published: 19/09/2018


Shelf life48 months
Country of originChina
AppearanceWhite crystalline powder
Molecular FormulaC8H10N4O2
StorageKeep 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 prec
Characteristic(BP/EP)white or almost white, crystalline powder or silky, white or almost white, crystals.
Appearance of solution(BP/EP)Clear, colourless
Chemical name1, 3, 7-Trimenthyl-, 3, 7-dihydro-1H-purine-2, 6-dione
CAS No.58-08-2


Melting point(BP/EP)234°C to 239°C
Infrared Absorption(BP/EP, FCC)Conforms to the caffeine reference spectrum.
Sulphate(BP/EP) Max:500ppm
Impurities((BP/EP) A, B, C, D, E, F) Max:0.1%
Unspecified Impurity(BP/EP) Max:0.1%
Total impurities(BP/EP) Max:0.1%
Acidity(BP/EP)Not more than 0.2ml of 0.01M sodium hydroxide.
Individual Impurity(USP) Max:0.1%
Total impurities(USP) Max:0.1%
Loss on drying(BP/EP) Max:0.5%
Residue on ignition(USP) Max:0.1%
Assay(USP)98.5 to 101%
Melting point(FCC)235°C to 237.5°C
SolubilitySparingly soluble in water, freely soluble in boiling water, slightly soluble in ethanol (96%). It dissolves in concentrated solutions of alkali benzoates or salicylates.
Molecular Mass194.2


Total Viable Count Max:1000cfu/g
Yeasts & Moulds Max:100cfu/g
Escherichia ColiNegative

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