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50-71-5

50-71-5 Structure

50-71-5 Structure
IdentificationMore
[Name]

Alloxan
[CAS]

50-71-5
[Synonyms]

2,4,5,6(1H,3H)-PYRIMIDINETETRONE
ALLOXAN
MESOXALYLCARBAMIDE
MESOXALYLUREA
,4,5,6-Pyrimidinetetrone
2,4,5,6-pyrimidintetron
2,4,5,6-Pyrimidintetrone
2,4,5,6-Tetraoxohexahydropyrimidine
5-oxo-barbituricaci
Alloxan 7169
Alloxane
Barbituric acid, 5-oxo-
Urea, mesoxalyl-
yrimidinetetrone
MESOXALYLCARBAMIDE 98%
MESOXALYLUREA 98%
ALLOXAN 98%
Alloxan(Hydrate)
AlloxanTetrahydrate99%
ALLOXAN 4-HYDRATE
[EINECS(EC#)]

200-062-0
[Molecular Formula]

C4H2N2O4
[MDL Number]

MFCD00006031
[Molecular Weight]

142.07
[MOL File]

50-71-5.mol
Chemical PropertiesBack Directory
[Melting point ]

~245 °C (dec.)
[Boiling point ]

259.59°C (rough estimate)
[density ]

1.8588 (rough estimate)
[refractive index ]

1.4610 (estimate)
[storage temp. ]

2-8°C
[pka]

pK (25°) 6.63
[Water Solubility ]

8g/L(temperature not stated)
[CAS DataBase Reference]

50-71-5(CAS DataBase Reference)
[NIST Chemistry Reference]

Alloxan(50-71-5)
[EPA Substance Registry System]

50-71-5(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
[WGK Germany ]

3
[F ]

8-10-23
[Safety Profile]

Poison by intraperitoneal, intravenous, subcutaneous, and rectal routes. Moderately toxic by ingestion. An experimental teratogen. Other experimental reproductive effects. Mutation data reported. Produces dlabetes in experimental animals. Decomposes in storage to release CO2. Do not store in sealed container. Explodes when heated above 170℃. When heated to decomposition it emits toxic fumes of NOx,.
[Hazardous Substances Data]

50-71-5(Hazardous Substances Data)
Raw materials And Preparation ProductsBack Directory
[Preparation Products]

Riboflavin-->Vitamin B2
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

Alloxan(50-71-5).msds
Hazard InformationBack Directory
[Chemical Properties]

White crystals, become pink on exposure to air; colorless aqueous solution which imparts pink color to skin. Soluble in water and alcohol.
[Uses]

Biochemical research, cosmetics, organic synthesis.
[Definition]

ChEBI: A member of the class of pyrimidones, the structure of which is that of perhydropyrimidine substituted at C-2, -4, -5 and -6 by oxo groups.
[Purification Methods]

Crystallisation from water gives the tetrahydrate. Anhydrous crystals are obtained by crystallisation from acetone, glacial acetic acid or by sublimation in vacuo. [See below and Beilstein 24 H 500, 24 I 428, 24 II 301, 24 III/IV 2137.]
Spectrum DetailBack Directory
[Spectrum Detail]

Alloxan(50-71-5)MS
Alloxan(50-71-5)IR1
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

50-71-5(sigmaaldrich)
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