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Home > Products >  for sale 134-81-6 BENZIL Supply

for sale 134-81-6 BENZIL Supply CAS NO.134-81-6

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  • Min.Order: 300 Kilogram
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  • for sale 134-81-6 BENZIL
  • Supply 134-81-6 BENZIL
  • BENZIL

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  • ProName: for sale 134-81-6 BENZIL Supply
  • CasNo: 134-81-6
  • Molecular Formula: C14H10O2
  • Appearance: yellow crystals or crystalline powder ...
  • Application: Laboratory chemicals, Synthesis of sub...
  • DeliveryTime: as soon as possible
  • PackAge: 20KG/bag,600KG/torch
  • Port: shanghai
  • ProductionCapacity: 50 Metric Ton/Month
  • Purity: ≥99.0%
  • Storage: This product should be stored in a sea...
  • Transportation: by sea
  • LimitNum: 300 Kilogram
  • Grade: Industrial Grade

Superiority

 

Nanjing Vali Chemical Technology Co., Ltd. is a joint-stock company integrating production and trade. The company is mainly engaged in the development of photoinitiators at home and abroad. Our company has cooperative factories in Anhui, Shandong and Liaoning, and the research institute is Nanjing University of Technology. The product quality is excellent, the company has always issued the "customer needs" for the purpose, quality first,integrity based.

The company has close cooperation with many domestic enterprises. Production and sales of photoinitiators, photochromic materials, blue light resistant materials, high purity electronic grade materials, flame retardants (phosphorus series) and other products.
 
The company's products have been exported to the European and American markets. We always have quality products. Reasonable price and warm service are available to a wide range of customers.
 
Companies adhering to the "customer first, forge ahead, and courage to innovate" business philosophy, adhere to the "customer first" principle to provide our clients with quality services. Welcome patrons.

4. FIRST AID MEASURES
4.1 Description of first aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance Move out of dangerous area.
If inhaled
if breathed in, move person into fresh air. If not breathing, give adificial respiration. Consult a physician.
In case of skin contact
Wash off with soap and plenty of water. Consult a physiclan.
In case of eye contact
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.
4.2 Most important symptoms and effects, both acute and delayed
The most impartant known symptoms and effects are described in the lbelling (see section 2.2) and/or in section 11
4.2 Indication of any immediate medical attention and special treatment needed
No data available
5. FIREFIGHTING MEASURES
5.1 Extinguishing media
Suitable extinguishing media
Use water spray, aloohol-esistant foam, dry chemical or carbon dioxide.
5.2 Special hazards arising from the substance or mixture
No data available
5.3 Advice for firefighters
Wear slf-contained breathing apparatus for fefighting if necessary.
5.4 Further information
No data available
VFinCI 1n1 1IVu IWILMDynC
5.1 Extinguishing media
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide,
5.2 Special hazards arising from the substance or mixture
No data aailable
5.3 Advice for firefighters
Wear slf-contained breathing apparatus for frefighting if necessary.
5.4 Further information
No data available
6. ACCIDENTAL RELEASE MEASURES
6.1 Personal precautions, protective equipment and emergency procedures
Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate
ventilation. Avoid breathing dust.
For personal protection see section 8.
6.2 Environmental precautions
Do not let product enter drains.
6.3 Methods and materials for containment and cleaning up
Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for
disposal.
6.4 Reference to other sections
For disposal see section 13.

Details

for sale 134-81-6 BENZIL Supply
Benzil Basic information
Description Structure Preparation Applications
Product Name: Benzil
Synonyms: 1,2-DIPHENYLETHANEDIONE;1,2-DIPHENYL-1,2 ETHANEDIONE;'LGC' (2403);'LGC' (2604);BENZIL;AURORA 14062;BIBENZOYL;DIPHENYL-A B-DIKETONE
CAS: 134-81-6
MF: C14H10O2
MW: 210.23
EINECS: 205-157-0
Product Categories: Pharmaceutical Intermediates;Intermediates;Functional Materials;Photopolymerization Initiators;Highly Purified Reagents;Other Categories;Zone Refined Products;B;Bioactive Small Molecules;Building Blocks;C13 to C14;Carbonyl Compounds;Cell Biology;Chemical Synthesis;-;Ketones;Organic Building Blocks
Mol File: 134-81-6.mol
Benzil Structure
 
Benzil Chemical Properties
Melting point  94-95 °C(lit.)
Boiling point  346 °C
density  1,521 g/cm3
vapor pressure  1 mm Hg ( 128.4 °C)
refractive index  1.5681 (estimate)
Fp  346-348°C
storage temp.  Store below +30°C.
solubility  <0.5g/l
form  Crystalline Powder
color  White
Water Solubility  0.5 g/L (20 ºC)
Merck  14,1078
BRN  608047
Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey WURBFLDFSFBTLW-UHFFFAOYSA-N
CAS DataBase Reference 134-81-6(CAS DataBase Reference)
NIST Chemistry Reference Ethanedione, diphenyl-(134-81-6)
EPA Substance Registry System Ethanedione, diphenyl-(134-81-6)
Benzil Usage And Synthesis
Description Benzil also known as 1,2-diphenylethane-1,2-dione is an organic compound with the molecular formula (C6H5CO)2. The compound belongs to the group of organic compounds known as stilbenes which contains a 1,2-diphenylethylene moiety. Benzyl is yellow in color and is one of the most common diketones.
Structure The most noticeable feature in Benzil’s structure is the long carbon-carbon bond of 1.54 Å, which shows there is no pi-bonding between the two carbonyl centers. Although the par of benzoyl groups are twisted with respect to the other with a dihedral angler of 117o, the PhCO are planar.
Preparation Benzyl is synthesized from benzoin, for instance with copper (II) acetate.
PhC(O)CH(OH)Ph + 2 Cu2+ → PhC(O)C(O)Ph + 2 H+ + 2 Cu+
Applications Benzil is utilized as an intermediate in pharmaceuticals and UV curing resin photosensitizer. Benzyl is mostly used in the free-radical curing of polymer networks. Benzyl is decomposed by ultraviolet radiation that generates free-radical species within the material, leading to the formation of cross-links. It is normally employed as a photoinitiator in polymer chemistry. In addition, Benzil is a potent inhibitor of human carboxylesterases, which are enzymes involved in the hydrolysis of many drugs used clinically as well as carboxylesters. It is also used in the synthesis of diketimines by reaction with amines. Benzyl is also used as an intermediate in the famous benil-benzilic acid arrangement. Further, it reacts with 1,3-diphenylacetone to get tetraphenylcyclopentadienone.
Chemical Properties yellow crystals or powder
Uses Organic synthesis; insecticide.
Definition A reaction in which benzil (1,2- diphenylethan-1,2-dione) is treated with hydroxide and then with acid to give benzilic acid (2-hydroxy-2,2-diphenylethanoic acid):
C6H5.CO.CO.C6H5→
(C6H5)2C(OH).COOH
The reaction, which involves migration of a phenyl group (C6H5-) from one carbon atom to another, was the first rearrangement reaction to be described (by Justus von Liebig in 1828).
Definition ChEBI: An alpha-diketone that is ethane-1,2-dione substituted by phenyl groups at positions 1 and 2 respectively.
Purification Methods Crystallise benzil from *benzene after washing with alkali. (Crystallisation from EtOH did not free benzil from material reacting with alkali.) [Hine & Howarth J Am Chem Soc 80 2274 1958.] It has also been crystallised from CCl4, diethyl ether or EtOH [Inoue et al. J Chem Soc, Faraday Trans 1 82 523 1986]. [Beilstein 7 IV 2502.]

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