1-PHENYLSEMICARBAZIDE Chemical Properties

Melting point:

171-174 °C (lit.)

Boiling point:

273.17°C (rough estimate)

Density 

1.2100 (rough estimate)

refractive index 

1.5860 (estimate)

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

solubility 

acetone: very soluble(lit.)

form 

powder to crystal

pka

11.16±0.43(Predicted)

color 

White to Light yellow

BRN 

743311

CAS DataBase Reference

103-03-7(CAS DataBase Reference)

IARC

3 (Vol. 12, Sup 7) 1987

EPA Substance Registry System

Phenicarbazide (103-03-7)

Safety Information

Hazard Codes 

Xn

Risk Statements 

22

Safety Statements 

45-36/37/39-26

WGK Germany 

3

RTECS 

FD0575000

TSCA 

Yes

HS Code 

29280090

MSDS

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

1-PHENYLSEMICARBAZIDE Usage And Synthesis

Uses

1-Phenylsemicarbazide was used in the synthesis of a series of alkyl(aryl/heteroaryl) substituted 3-trifluoromethyl-1H-1-phenylpyrazoles and alkyl 3-carboxylate analogs by the cyclocondensation reactions with 4-alkoxy-1,1,1-trihaloalk-3-en-2-ones.

Definition

ChEBI: Phenicarbazide is a member of phenylhydrazines.

brand name

Antipyretic dellepsoids d26.

World Health Organization (WHO)

Phenicarbazide, which has analgesic and antipyretic activity, was introduced in the 1970s. It has been withdrawn in at least one country on grounds of its adverse effect profile and it appears to have fallen into disuse in others.

Purification Methods

Crystallise it from water and dry it in a vacuum over KOH. [Beilstein 15 H 287, 15 II 106, 15 III 184, 15 IV 180.]

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