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Cas Database

103-33-3

103-33-3

Identification

  • Product Name:Diazene, 1,2-diphenyl-

  • CAS Number: 103-33-3

  • EINECS:203-102-5

  • Molecular Weight:182.225

  • Molecular Formula: C12H10N2

  • HS Code:29270000

  • Mol File:103-33-3.mol

Synonyms:Azobenzene(8CI);Benzene, azo- (3CI);Diazene, diphenyl- (9CI);1,2-Diphenyldiazene;A15073;Azobenzide;Azobenzol;Benzene, azobis-;Benzeneazobenzene;Diphenyldiazene;Diphenyldiimide;NSC 2102;Phenylazobenzene;

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Safety information and MSDS view more

  • Pictogram(s):ToxicT,DangerousN,HarmfulXn,FlammableF

  • Hazard Codes:T,N,Xn,F

  • Signal Word:Danger

  • Hazard Statement:H302 Harmful if swallowedH332 Harmful if inhaled H341 Suspected of causing genetic defects H350 May cause cancer H410 Very toxic to aquatic life with long lasting effects

  • First-aid measures: General adviceConsult a physician. Show this safety data sheet to the doctor in attendance.If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Consult a physician. 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. SYMPTOMS: Symptoms of exposure to this compound may include irritation of the skin, eyes and respiratory tract; liver and kidney damage; liver and lung cancer; and possible blood disorders. Symptoms of exposure to nitrogen compounds may include cyanosis, headache, shallow respiration, dizziness, confusion, jaundice, pain on urination, anemia, weight loss, weakness, irritability, blood pressure fall, lethargy, stupor, convulsions, coma, and possible death. The nervous system, liver, kidneys, and bone marrow may be affected after chronic exposure. ACUTE/CHRONIC HAZARDS: This compound irritates the skin, eyes, and respiratory tract, and can be absorbed through the skin. It is a positive animal carcinogen. When heated to decomposition it emits toxic fumes of carbon monoxide, carbon dioxide, and nitrogen oxides. Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Aniline and related compounds/

  • Fire-fighting measures: Suitable extinguishing media Use dry chemical, carbon dioxide, or alcohol foam extinguishers. Poisonous gases are produced in fire including nitrogen oxides. If material or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Notify local health and fire officials and pollution control agencies. From a secure, explosion-proof location, use water spray to cool exposed containers. If cooling streams are ineffective (venting sound increases in volume and pitch, tank discolors, or shows any signs of deforming), withdraw immediately to a secure position. If employees are required to fight fires, they must be properly trained and equipped. OSHA 1910.156. Flash point data for this chemical are not available. It is probably combustible. Wear self-contained breathing apparatus for firefighting if necessary.

  • Accidental release measures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8. Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. PRECAUTIONS FOR "CARCINOGENS": A high-efficiency particulate arrestor (HEPA) or charcoal filters can be used to minimize amt of carcinogen in exhausted air ventilated safety cabinets, lab hoods, glove boxes or animal rooms ... Filter housing that is designed so that used filters can be transferred into plastic bag without contaminating maintenance staff is avail commercially. Filters should be placed in plastic bags immediately after removal ... The plastic bag should be sealed immediately ... The sealed bag should be labelled properly ... Waste liquids ... should be placed or collected in proper containers for disposal. The lid should be secured & the bottles properly labelled. Once filled, bottles should be placed in plastic bag, so that outer surface ... is not contaminated ... The plastic bag should also be sealed & labelled. ... Broken glassware ... should be decontaminated by solvent extraction, by chemical destruction, or in specially designed incinerators. /Chemical Carcinogens/

  • Handling and storage: Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2. PRECAUTIONS FOR "CARCINOGENS": Storage site should be as close as practical to lab in which carcinogens are to be used, so that only small quantities required for ... expt need to be carried. Carcinogens should be kept in only one section of cupboard, an explosion-proof refrigerator or freezer (depending on chemicophysical properties ...) that bears appropriate label. An inventory ... should be kept, showing quantity of carcinogen & date it was acquired ... Facilities for dispensing ... should be contiguous to storage area. /Chemical Carcinogens/

  • Exposure controls/personal protection:Occupational Exposure limit valuesBiological limit values Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Eye/face protection Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Respiratory protection Wear dust mask when handling large quantities. Thermal hazards

Supplier and reference price

  • Manufacture/Brand
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  • Manufacture/Brand:TRC
  • Product Description:Azobenzene
  • Packaging:500g
  • Price:$ 425
  • Delivery:In stock
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  • Manufacture/Brand:TRC
  • Product Description:Azobenzene
  • Packaging:100g
  • Price:$ 135
  • Delivery:In stock
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  • Manufacture/Brand:TCI Chemical
  • Product Description:Azobenzene >98.0%(GC)
  • Packaging:25g
  • Price:$ 40
  • Delivery:In stock
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  • Manufacture/Brand:TCI Chemical
  • Product Description:Azobenzene >98.0%(GC)
  • Packaging:100g
  • Price:$ 133
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  • Manufacture/Brand:SynQuest Laboratories
  • Product Description:Azobenzene
  • Packaging:100 g
  • Price:$ 184
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  • Manufacture/Brand:SynQuest Laboratories
  • Product Description:Azobenzene
  • Packaging:25 g
  • Price:$ 84
  • Delivery:In stock
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  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:trans-Azobenzene for synthesis. CAS 103-33-3, EC Number 203-102-5, chemical formula C H N=NC H ., for synthesis
  • Packaging:8201180025
  • Price:$ 66.8
  • Delivery:In stock
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  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:trans-Azobenzene for synthesis
  • Packaging:25 g
  • Price:$ 64.01
  • Delivery:In stock
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  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:Azobenzene 98%
  • Packaging:5g
  • Price:$ 50.3
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  • Manufacture/Brand:Sigma-Aldrich
  • Product Description:Azobenzene solution 2000 μg/mL in methanol, analytical standard
  • Packaging:47959
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Relevant articles and documentsAll total 3 Articles be found

Gas-Phase Chemistry of the Negative Ions Derived from Azo- and Hydrazobenzene

Ingemann, Steen,Fokkens, Roel H.,Nibbering, Nico M. M.

, p. 607 - 612 (2007/10/02)

The proton affinities of the azobenzene radical anion and the conjugate base of hydrazobenzene have been determined to be 1465 kJ mol-1 and 1514 kJ mol-1, respectively, with the use of a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer equipped with an external ion source.The proton affinities lead in combination with a measured electron affinity of azobenzene (55 kJ mol-1) to a N-H bond dissociation energy (BDE) of 306 kJ mol-1 for hydrazobenzene while the N-H BDE of the PhNHN.Ph radical is estimated to be 208 kJ mol-1.The difference between the N-H BDE values of 98 kJ mol-1 approximates the ?-bond energy of the nitrogen-nitrogen bond in azobenzene.The reaction of the PhN.N-Ph and PhNHN-Ph ions with derivatives of trifluoroacetic acid are characterized.The occurrence of dissociative electron transfer instead of SN2 substitution in reactions of the azobenzene radical anion with halogen-substituted methanes is discussed.

Gas-Phase Generation of Phenylnitrene Anion Radical - Proton Affinity and ΔHf0 of PhN-. and Its Clustering with ROH Molecules

McDonald, Richard N.,Chowdhury, A. Kasem,Setser, D. W.

, p. 6599 - 6603 (2007/10/02)

Phenylnitrene anion radical (PhN-.) was prepared in a flowing afterglow apparatus by dissociative electron attachement of phenyl azide (PhN3).PhN-. undergoes a very slow reaction with PhN3, producing PhN4Ph-. and PhN2Ph-. in a ratio of 4:1.The proton affinity pf PhN-. was bracketed from kinetic studies with various potential proton donors, PA(PhN-.) = 372 +/- 2 kcal mol-1, from which ΔHf0(PhN-.) = 60 +/- 2 kcal mol -1 was calculated.With alcohols which are too weakly acidic to directly protonate PhN-. , a sequence of bimolecular reactions is observed involving ROH; PhN-. -> PhN-.(HOR) -> PhNH. + RO-(HOR) -> RO-(HOR)x.Although the first step of the sequence is slow, the second step, a cluster-to-cluster transformation, is fast.The related reaction sequence of PhN-. reacting with HOH involves the ions PhN-. -> PhN-.(HOH) -> PhN-.(HOH)2 -> PhNH. + HO-(HOH)2 -> HO-(HOH)x with the third reaction as the fast step.The relationship of these sequential processes to acidities and basicities found in solution is discussed.Of the five observed reaction channels for PhN-. with CH3CN, the major channel yields the adduct m/z 132 and a minor channel produces the M-1 species, m/z 131.Additions by PhN-. to Cα or N or CH3CN are considered to account for these product anions.The reaction of PhN-. with (CH3)3CCN also yields its adduct.

Hypovalent Radicals. 7. Gas-Phase Generation of Phenylnitrene Anion Radical and Its Reaction with Phenyl Azide

McDonald, Richard N.,Clowdhury, A. Kasem

, p. 5118 - 5119 (2007/10/02)

-

Process route upstream and downstream products

Process route

phenylnitrene anion radical
74586-02-0

phenylnitrene anion radical

Phenyl azide
622-37-7

Phenyl azide

C<sub>12</sub>H<sub>10</sub>N<sub>4</sub><sup>(1-)</sup>
71364-16-4

C12H10N4(1-)

Conditions
Conditions Yield
In gas; Product distribution; flowing afterglow apparatus;;
at 24.9 ℃; Rate constant; flowing afterglow apparatus;
Conditions
Conditions Yield
With e-; Thermodynamic data; ΔG0;
Conditions
Conditions Yield
With anthracene radical anion; In N,N-dimethyl-formamide; at 294 ℃; Rate constant; other anion radicals, electron transfer;
1-iodoadamantane
768-93-4

1-iodoadamantane

1-adamantyl radical
2819-03-6

1-adamantyl radical

Azobenzene
1227476-15-4

Azobenzene

Conditions
Conditions Yield
With tetrabutylammonium tetrafluoroborate; In N,N-dimethyl-formamide; at 25 ℃; Rate constant;
1-phenyl-2,2-dimethyl-1-propyl bromide
70712-85-5

1-phenyl-2,2-dimethyl-1-propyl bromide

C<sub>11</sub>H<sub>15</sub>
68525-40-6

C11H15

Azobenzene
1227476-15-4

Azobenzene

Conditions
Conditions Yield
With tetrabutylammonium tetrafluoroborate; In N,N-dimethyl-formamide; at 25 ℃; Rate constant;
benzyl bromide
100-39-0

benzyl bromide

benzyl radical
2154-56-5

benzyl radical

Azobenzene
1227476-15-4

Azobenzene

Conditions
Conditions Yield
With tetrabutylammonium tetrafluoroborate; In N,N-dimethyl-formamide; at 25 ℃; Rate constant;
benzyl chloride
100-44-7

benzyl chloride

benzyl radical
2154-56-5

benzyl radical

Azobenzene
1227476-15-4

Azobenzene

Conditions
Conditions Yield
With tetrabutylammonium tetrafluoroborate; In N,N-dimethyl-formamide; at 25 ℃; Rate constant;
s-butyl bromide
78-76-2,5787-31-5

s-butyl bromide

sec-Butyl-Radikal
2348-55-2

sec-Butyl-Radikal

Azobenzene
1227476-15-4

Azobenzene

Conditions
Conditions Yield
With tetrabutylammonium tetrafluoroborate; In N,N-dimethyl-formamide; at 25 ℃; Rate constant;
methylene chloride
74-87-3

methylene chloride

C<sub>13</sub>H<sub>13</sub>N<sub>2</sub>

C13H13N2

Conditions
Conditions Yield
Thermodynamic data; other halogen subst. methanes, EA, ΔH0, T*ΔS0, ΔG0;

Global suppliers and manufacturers

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  • Chemwill Asia Co., Ltd.
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  • Shaanxi BLOOM TECH Co.,Ltd
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  • Shanghai Upbio Tech Co.,Ltd
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  • Kono Chem Co.,Ltd
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  • GIHI CHEMICALS CO.,LIMITED
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