Product Name Thymine
Synonyms 2,4(1H,3H)-Pyrimidinedione, 5-methyl-; 2,4-Dihydroxy-5-methylpyrimidine; 2,4-dioxy-5-methyl pyrimidine; 5-Methyluracil; Thy; 5-methyl-uracil; 5-methyl uracil; Thymine 2-4-Dihydroxy-5-methylpyrimidine; 5-methylpyrimidine-2,4(1H,3H)-dione
Molecular Formula C5H6N2O2
Molecular Weight 126.1133
CAS Registry Number 65-71-4
EINECS 200-616-1
Density 1.226g/cm3
Melting point 316-317°C
Boiling point 403.8°C at 760 mmHg
Refractive index 1.489
Flash point 198°C
Vapour Pressur 4.25E-07mmHg at 25°C
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Item
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Specification
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Specific rotation
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+39.5 to +41.5°
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State of solution(transmittance)
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Clear 98.0% min.
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Chloride[cl]
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0.020% max.
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Ammonium [NH4]
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0.02% max.
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Sulfate[SO4]
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0.020% max
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Iron[Fe]
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10ppm max.
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Heavy metals [Pb]
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10ppm max
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Arsenic[As2O3]
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1ppm max
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Other amino acids
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Chromatographically not detectable
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Loss on drying
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0.20% max.
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Residue on ignition[sulfated]
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0.10% max.
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Assay
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99.0% min
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China
