P-TOLYLUREA Chemical Properties

Melting point:

178-181 °C

Boiling point:

255℃

Density 

1.192

refractive index 

1.6180 (estimate)

Flash point:

108℃

storage temp. 

2-8°C

form 

powder to crystal

pka

14.61±0.50(Predicted)

color 

White to Almost white

Water Solubility 

3.07g/L(45 ºC)

BRN 

2208088

CAS DataBase Reference

622-51-5(CAS DataBase Reference)

EPA Substance Registry System

p-Tolylurea (622-51-5)

Safety Information

Risk Statements 

33

Safety Statements 

24/25

RTECS 

YU4200000

HazardClass 

IRRITANT

HS Code 

29242100

MSDS

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P-TOLYLUREA Usage And Synthesis

Chemical Properties

beige crystalline powder

General Description

Colorless crystals.

Air & Water Reactions

Slightly soluble in hot water.

Reactivity Profile

P-TOLYLUREA is an amide. Amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).

Health Hazard

ACUTE/CHRONIC HAZARDS: Slightly toxic. Hazardous decomposition products.

Purification Methods

Crystallise the urea from H2O (m 186o), EtOH/water (1:1) or aqueous AcOH (m 184o). [Beilstein 12 H 941, 12 I 425, 12 II 512, 12 III 2084, 12 IV 1923.]

P-TOLYLUREA(622-51-5)Related Product Information

• 2,4-DIMETHYLPHENYLUREA
• P-TOLYLUREA
• Chlorotoluron
• 3,3'-(4-METHYL-1,3-PHENYLENE) BIS (1,1-DIMETHYLUREA)
• 2-THIO-1-O-TOLYLUREA
• 1,3-di-p-tolylurea
• 5-FLUORO-O-TOLYLUREA
• o-Tolylurea,98%,O-TOLYLUREA
• m-Tolylurea,98%,meta-Tolylurea,3-Tolylurea,1-Tolylurea,M-TOLYLUREA
• DYMRON
• 2-THIO-1-P-TOLYLUREA
• 1-(3-CHLORO-4-METHYLPHENYL)UREA
• 4-UREIDO-BENZOIC ACID
• 4-[(ANILINOCARBONYL)AMINO]BENZOIC ACID
• SYM-DI-O-TOLYLUREA
• tolylurea
• (2,4,6-trimethylphenyl)urea
• (+)-1-[(R)-α-Methylbenzyl]-3-p-tolylurea,1-[(R)-α-Methylbenzyl]-3-p-tolylurea