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Name	Benzylurea	EINECS	208-689-1
CAS No.	538-32-9	Density	1.138g/cm³
PSA	55.12000	LogP	1.94610
Solubility	Slightly soluble in water.	Melting Point	149-151 °C(lit.)
Formula	C8H10 N2 O	Boiling Point	282.9°Cat760mmHg
Molecular Weight	150.18	Flash Point	124.9°C
Transport Information	N/A	Appearance	White to off-white powder
Safety	Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of NO_x.	Risk Codes	N/A
Molecular Structure		Hazard Symbols	N/A
Synonyms	Urea,(phenylmethyl)- (9CI); Urea, benzyl- (6CI,7CI,8CI); 1-Benzylurea;Benzylcarbamide; Benzylurea; N-Benzylurea; NSC 109103	Article Data	84

Benzylurea Synthetic route

: 617-10-7
3-nitro-benzoyl glycine

ethyl (3-nitrobenzoylglycyl)-3-amido propionate: ethyl (3-nitrobenzoylglycyl)-3-amido propionate

: 3173-56-6
benzyl isothiocyanate

A: 188805-32-5
N-[2-[[[3-[[[(phenylmethyl)amino]carbonyl]amino]phenyl]carbonyl]amino]acetyl]-β-alanine

B: 538-32-9
benzylurea

Conditions

Conditions	Yield
With aniline; palladium In diethyl ether; ethanol; acetonitrile	A n/a B 99%

: 57-13-6
urea

: 100-46-9
benzylamine

: 538-32-9
benzylurea

Conditions

Conditions	Yield
With merrifield anchored iron(II)-anthra catalyst In 1,4-dioxane at 100℃; for 8h; Temperature; Time;	96%
With choline chloride; tin(ll) chloride at 130℃; for 8h; Green chemistry;	89%
With cholin chloride ZnCl2; iron oxide at 130℃; for 6h; Green chemistry;	86%

: 64-17-5
ethanol

: 90609-83-9
S-Methyl N-benzyl(thiocarbamate)

: 538-32-9
benzylurea

Conditions

Conditions	Yield
With ammonia In 1,4-dioxane	95%

: 590-28-3
potassium cyanate

: 100-46-9
benzylamine

: 538-32-9
benzylurea

Conditions

Conditions	Yield
With N,N,N',N'-tetramethylguanidinium acetate In water at 60℃; for 0.5h;	91%
With hydrogenchloride In water at 20℃; for 6h; Solvent; Inert atmosphere;	89%
With hydrogenchloride In water at 80℃; for 1h; Microwave irradiation;	88%

: 51-79-6
urethane

: 100-46-9
benzylamine

: 538-32-9
benzylurea

Conditions

Conditions	Yield
With zirconocene dichloride In n-heptane at 100℃; for 24h; Inert atmosphere; Sealed tube;	87%

: 103-81-1
Benzeneacetamide

: 538-32-9
benzylurea

Conditions

Conditions	Yield
With [bis(acetoxy)iodo]benzene; ammonia In methanol at 0 - 20℃; for 2h; Hofmann Rearrangement; Inert atmosphere;	86%

: 622-77-5
N-benzylcyanamide

: 538-32-9
benzylurea

Conditions

Conditions	Yield
With Acetaldehyde oxime; cerium(IV) oxide In ethanol for 2h; Reflux; Inert atmosphere;	84%
With [OsCl2(η6-p-cymene)(PMe2OH)]; water at 40℃; for 0.5h; Reagent/catalyst; Inert atmosphere; Sealed tube;	74%
With hydrogenchloride
With hydrogenchloride In ethanol; water for 3h; Reflux; Inert atmosphere;	0.1093 g

: 556-89-8
nitrourea

: 100-46-9
benzylamine

: 538-32-9
benzylurea

Conditions

Conditions	Yield
In water at 70℃;	79%
In water at 70℃; for 1h;	79%

: 100-46-9
benzylamine

: 538-32-9
benzylurea

Conditions

Conditions	Yield
	71%
Multi-step reaction with 4 steps 2: aqueous ethanol; hydrazine 3: aqueous hydrochloric acid; sodium nitrite 4: water View Scheme
Multi-step reaction with 2 steps 1: diethyl ether 2: hydrochloric acid View Scheme

: 4-phenyl-5-benzoyl-2-imidazolinone

: 538-32-9
benzylurea

Conditions

Conditions	Yield
With potassium hydroxide In methanol for 4h;	70%

Benzylurea Chemical Properties

IUPAC Name: Benzylurea
Synonyms: (Phenylmethyl)urea ; 1-Benzylurea ; Urea, N-(phenylmethyl)- ; 1-Benzylharnstoff
Product Categories: BA - BHOrganic Building Blocks;Alphabetic;B;Carbonyl Compounds;Ureas
Molecular Structure of Benzylurea (CAS NO.538-32-9) :
Molecular Formula of Benzylurea (CAS NO.538-32-9) : C₈H₁₀N₂O
Molecular Weight of Benzylurea (CAS NO.538-32-9) : 150.18
CAS NO: 538-32-9
EINECS : 208-689-1
Mol File: 538-32-9.mol
Merck : 14,1147
BRN : 2208083
Index of Refraction: 1.565
Surface Tension: 47.3 dyne/cm
Density: 1.138 g/cm³
Flash Point: 124.9 °C
Enthalpy of Vaporization: 52.18 kJ/mol
Boiling Point: 282.9 °C at 760 mmHg
Vapour Pressure: 0.00326 mmHg at 25°C
Melting point : 149-151 ºC
Appearance:white to off-white powder

Benzylurea Uses

Benzylurea (CAS NO.538-32-9) is used as intermediate organic synthesis.

Benzylurea Toxicity Data With Reference

1.	orl-rat LD50:4410 mg/kg	GISAAA Gigiena i Sanitariya. 44 (3)(1979),68.
2.	orl-mus LD50:570 mg/kg	JMCMAR Journal of Medicinal Chemistry. 11 (1968),814.
3.	orl-rat LD50:2700 mg/kg	GISAAA Gigiena i Sanitariya. 44 (3)(1979),68.

Benzylurea Safety Profile

Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of NO_x.
Safety Statements 24/25-22
S24/25:Avoid contact with skin and eyes.
S22:Do not breathe dust.
WGK Germany 2
RTECS YS1780000

Benzylurea Specification

1.General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
2.Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam .
3.Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Avoid ingestion and inhalation.
4.Storage: Store in a cool, dry place. Store in a tightly closed container.

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