5-NITROBARBITURIC ACID Chemical Properties

Melting point:

180.5°C

Boiling point:

303.69°C (rough estimate)

Density 

1.79±0.1 g/cm3(Predicted)

refractive index 

1.5000 (estimate)

storage temp. 

Store at -20°C

pka

-1.70±0.20(Predicted)

form 

Solid

color 

Off-white to light yellow

Merck 

6585

CAS DataBase Reference

480-68-2(CAS DataBase Reference)

EPA Substance Registry System

2,4,6(1H,3H,5H)-Pyrimidinetrione, 5-nitro- (480-68-2)

Safety Information

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39-36

RTECS 

CQ7300000

HazardClass 

IRRITANT

HS Code 

29335400

5-NITROBARBITURIC ACID Usage And Synthesis

synthesis

5-Nitrobarbituric acid can be obtained by nitration of barbituric acid with fuming nitric acid below 40°C with a yield of 85-90%.

Chemical Properties

Prisms and leaflets from water.Slightly soluble in water; soluble in alcohol and sodium hydroxide solution; insoluble in ether.

Uses

Microreagent for potassium.

Purification Methods

Crystallise diliuric acid from water as the trihydrate (m 180-181o (dec). Drying over 70% H2SO4 converts the trihydrate to the dihydrate [Loeffler & Moore J Am Chem Soc 70 3650 1948]. [Beilstein 24 H 474, 24 II 273, 24 III/IV 1882.]

5-NITROBARBITURIC ACID(480-68-2)Related Product Information

• Barbituric acid
• 5-NITROBARBITURIC ACID HYDRATE,5-NITROBARBITURIC ACID TRIHYDRATE
• 1,3-Dimethyl-5-nitrobarbituric acid sodium salt
• 5-Nitrobarbituric acid ammonium salt
• 5-NITROBARBITURIC ACID HYDRATE 95
• NITROMALONALDEHYDE
• N-METHYL-2-NITROACETAMIDE
• 5-NITROBARBITURIC ACID MONOHYDRATE
• URAMIL
• 2-aminopropanediamide
• 5-NITROBARBITURIC ACID