CAS No.134-81-6,Benzil Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	134-81-6
Name:	Benzil
Article Data:	1182

Formula:	C₁₄H₁₀O₂
Molecular Weight:	210.232
Synonyms:	Diphenylethanedione;Diphenylglyoxal;Esacure KBO;NSC 220315;NSC 4041;Wy20910;Benzil;Benzil(8CI);Ethanedione, diphenyl- (9CI);1,2-Diphenylethane-1,2-dione;1,2-Diphenylethanedione;Bibenzoyl;Dibenzoyl;Diphenyl diketone;Diphenyl-a,b-diketone;
EINECS:	205-157-0
Density:	1.165 g/cm³
Melting Point:	94-95 °C(lit.)
Boiling Point:	347 °C at 760 mmHg
Flash Point:	142.559 °C
Solubility:	Soluble in ethanol, ethyl ether, chloroform, ethyl acetate, benzene, toluene, nitrobenzene. Insoluble in water
Appearance:	yellow crystals or powder
Hazard Symbols:	Xi
Risk Codes:	36/37/38
Safety:	26-36-37/39
PSA:	34.14000
LogP:	2.75220

Synthetic route

: 119-53-9
2-hydroxy-2-phenylacetophenone

: 134-81-6
benzil

Conditions

Conditions	Yield
With pyridine chromium peroxide In benzene for 0.1h; Product distribution; Heating; effect of various chromium(VI) based oxidants;	100%
With pyridine chromium peroxide In benzene for 0.1h; Heating;	100%
With 4-dimethylaminopyridine tribromide In dichloromethane for 0.25h; Ambient temperature;	100%

: 501-65-5
diphenyl acetylene

: 134-81-6
benzil

Conditions

Conditions	Yield
With sodium periodate; sulfuric acid; C31H29Br2N3Ru*CH2Cl2 In water; acetonitrile at 25℃; for 0.5h; Inert atmosphere; Schlenk technique;	100%
With sodium periodate; sulfuric acid; ruthenium-carbon composite In water; acetonitrile at 25℃; for 0.5h; Catalytic behavior; Reagent/catalyst; Temperature; Time; Solvent; Green chemistry;	100%
With SO3-dioxane at 60℃; for 0.25h;	99%

: 16939-18-7
1,2-diphenyl-2-thioxoethanone

: 134-81-6
benzil

Conditions

Conditions	Yield
With 3-chloro-benzenecarboperoxoic acid In diethyl ether for 1h; oxidation with nitric acid;	100%

: 26205-39-0
1,2-diphenyl-2-(trimethylsilyloxy)ethanone

: 134-81-6
benzil

Conditions

Conditions	Yield
With copper nitrate - dinitrogen tetroxide adduct In tetrachloromethane for 0.75h; Oxidation; Heating;	100%
With aluminium trichloride; silver bromate In acetonitrile for 0.4h; Heating;	98%
With Montmorillonite K10; ferric nitrate Oxidation; deprotection; Irradiation;	95%

: 180295-26-5
(2RS)-(+/-)-2-<<(1,1-dimethylethyl)dimethylsilyl>oxy>-1,2-diphenylethanone

: 134-81-6
benzil

Conditions

Conditions	Yield
With copper nitrate - dinitrogen tetroxide adduct In tetrachloromethane for 1h; Oxidation; Heating;	100%
With N-hydroxyphthalimide; oxygen; cobalt(II) benzoate In acetonitrile at 20℃; for 9h;	93%
With manganese(IV) oxide; aluminium trichloride In acetonitrile for 0.333333h; Oxidation; Heating;	40%

: [(6-Ph2TPA)Ni(PhC(O)C(OH)C(O)Ph)]ClO4

A: 932703-85-0
[(6-Ph2TPA)Ni(O2CPh)]ClO4

B: 33868-50-7
phenacyl benzoate

C: 201230-82-2
carbon monoxide

D: 134-81-6
benzil

E: 65-85-0
benzoic acid

Conditions

Conditions	Yield
With oxygen	A 100% B n/a C n/a D n/a E n/a

...Expand

: [(bnpapa)Ni(PhC(O)C(OH)C(O)Ph)]ClO4

A: 33868-50-7
phenacyl benzoate

B: 201230-82-2
carbon monoxide

C: [(bnpapa)Ni(O2CPh)]ClO4

D: 134-81-6
benzil

E: 65-85-0
benzoic acid

Conditions

Conditions	Yield
With oxygen In acetonitrile at 20℃;	A n/a B n/a C 100% D 12% E 11 mg

...Expand

: 492-70-6, 655-48-1, 2325-10-2, 38270-73-4, 52340-78-0, 579-43-1
1,2-diphenyl-1,2-ethanediol

: 134-81-6
benzil

Conditions

Conditions	Yield
With Me2Se*NCS; 1,8-diazabicyclo[5.4.0]undec-7-ene In toluene 1.)1h 0 deg C, 1h room temperature, 2.) 4h room temperature;	99%
With octahydro-2,5-epiminopentalen-7-yloxidanyl; acetic acid; sodium nitrite In acetonitrile at 20℃; for 4h; air;	99%
With 9-benzyl-9-norazaadamantane N-oxyl; oxygen; acetic acid; sodium nitrite In acetonitrile at 20℃; for 4h; Catalytic behavior; Concentration; Reagent/catalyst; Solvent; Temperature; Time;	99.3%

: 2-bromo-2'-hydroxy-diphenyl-2-methylethanone

: 134-81-6
benzil

Conditions

Conditions	Yield
Stage #1: 2-bromo-2'-hydroxy-diphenyl-2-methylethanone With potassium chloride at 60 - 76℃; for 4.33h; Stage #2: With dimethyltitanocene; isopentyl butanoate for 4.5h; Temperature;	99.3%

: 451-40-1
phenyl benzyl ketone

: 134-81-6
benzil

Conditions

Conditions	Yield
With hydrogen bromide; dimethyl sulfoxide at 55℃; for 24h;	99%
With C14H14N6O2; oxygen; sodium acetate; palladium diacetate at 120℃; under 760.051 Torr; for 48h;	97%
With potassium hydrogencarbonate; dimethyl sulfoxide at 80℃;	96%

Downstream Products

3469-20-3

91-00-9

100-52-7

120-46-7

103-29-7

1459-20-7

251985-00-9

959-32-0

Total:152 Page 1 of 4 1 2 3 4 Next>>

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Consensus Reports

Reported in EPA TSCA Inventory.

Specification

The Benzil, with the CAS registry number 134-81-6, is also known as Diphenylethanedione. It belongs to the product categories of Pharmaceutical Intermediates; Intermediates; Functional Materials; Photopolymerization Initiators; Highly Purified Reagents; Other Categories; Zone Refined Products; Bioactive Small Molecules; Building Blocks; C13 to C14; Carbonyl Compounds; Cell Biology; Chemical Synthesis; Ketones; Organic Building Blocks. Its EINECS number is 205-157-0. This chemical's molecular formula is C₁₄H₁₀O₂ and molecular weight is 210.23. What's more, its systematic name is Benzil. Its classification code is Skin / Eye Irritant. Benzil is commonly used as pharmaceutical intermediates, insecticide and curing agent. It is used in organic synthesis. Its main use is as a photoinitiator in polymer chemistry. It is used in the free-radical curing of polymer networks.

Physical properties of Benzil are: (1)ACD/LogP: 3.38; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.38; (4)ACD/LogD (pH 7.4): 3.38; (5)ACD/BCF (pH 5.5): 218.17; (6)ACD/BCF (pH 7.4): 218.17; (7)ACD/KOC (pH 5.5): 1643.31; (8)ACD/KOC (pH 7.4): 1643.31; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 34.14 Å²; (13)Index of Refraction: 1.594; (14)Molar Refractivity: 61.247 cm³; (15)Molar Volume: 180.379 cm³; (16)Polarizability: 24.28×10^-24cm³; (17)Surface Tension: 47.4 dyne/cm; (18)Density: 1.165 g/cm³; (19)Flash Point: 142.559 °C; (20)Enthalpy of Vaporization: 59.123 kJ/mol; (21)Boiling Point: 347 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25°C.

Preparation: this chemical can be prepared by cis-1,2-diphenyl-ethene at the temperature of 120 °C. This reaction will need reagent benzeneseleninic anhydride and solvent chlorobenzene with the reaction time of 8 hours. The yield is about 89%.

Benzil can be prepared by cis-1,2-diphenyl-ethene at the temperature of 120 °C

Uses of Benzil: it can be used to produce 2-hydroxy-1,2-diphenyl-pent-4-en-1-one at the ambient temperature. It will need solvent acetonitrile with the reaction time of 5 hours. The yield is about 94%.

Benzil can be used to produce 2-hydroxy-1,2-diphenyl-pent-4-en-1-one at the ambient temperature

When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: c1ccc(cc1)C(=O)C(=O)c2ccccc2
(2)Std. InChI: InChI=1S/C14H10O2/c15-13(11-7-3-1-4-8-11)14(16)12-9-5-2-6-10-12/h1-10H
(3)Std. InChIKey: WURBFLDFSFBTLW-UHFFFAOYSA-N

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	oral	> 3gm/kg (3000mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)	Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 15, Pg. 359, 1984.