4(3H)-Pyrimidinone,2,5-diamino-6-hydroxy-

The Molecular Structure of  2,5-Diamino-4,6-dihydroxy-pyrimidine (CAS NO.40769-69-5) is

Cas Register Number: 40769-69-5
Synonyms:  2,5-Diamino-6-hydroxy-4(1H)-pyrimidinone ; 2,5-Diamino-6-hydroxypyrimidin-4(3H)-one ; 2,5-Diaminopyrimidin-4,6-diol ; 2,5-Diaminopyrimidine-4,6-diol ; 4(3H)-Pyrimidinone, 2,5-diamino-6-hydroxy- ; 4,6-Pyrimidinediol, 2,5-diamino- ; 2,5-Diamino-4,6-dihydroxypyrimidine ; 2,5-Diamino-4,6-dihydroxy-pyrimidine ; 2,5-Diamino-pyrimidine-4,6-diol 
IUPAC Name: 2,5-Diamino-4-hydroxy-1H-pyrimidin-6-one
Molecular Formula: C₄H₆N₄O₂
Molecular Weight: 142.116 g/mol 
Product Categories: Starting Raw Materials & Intermediates;APIs & Intermediate;Pyrimidine
Melting point:  260 °C
H bond acceptors: 6
H bond donors: 6
Freely Rotating Bonds: 2
Polar Surface Area: 48.38 Å²
Index of Refraction: 1.877
Molar Refractivity: 30.06 cm³
Molar Volume: 65.8 cm³
Surface Tension: 123 dyne/cm
Density: 2.15 g/cm³ 
Flash Point: 270.9 °C
Enthalpy of Vaporization: 82.81 kJ/mol
Boiling Point: 524.2 °C at 760 mmHg
Vapour Pressure of  2,5-Diamino-4,6-dihydroxy-pyrimidine (CAS NO.40769-69-5): 1.31E-11 mmHg at 25°C

Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing