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424633

Azobenzene

98%

Synonym(s):

1,2-Diphenyldiazene; Diphenyldiazene

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About This Item

Linear Formula:
C6H5N=NC6H5
CAS Number:
103-33-3
Molecular Weight:
182.22
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
24866581
EC Number:
203-102-5
Beilstein/REAXYS Number:
1819138
MDL number:
MFCD00003022
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vapor pressure

1 mmHg ( 104 °C)

Quality Segment

assay

98%

form

powder or crystals

autoignition temp.

890 °F

technique(s)

titration: suitable

bp

293 °C (lit.)

mp

65-68 °C (lit.)

density

1.09 g/mL at 25 °C (lit.)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

c1ccc(cc1)\N=N\c2ccccc2

InChI

1S/C12H10N2/c1-3-7-11(8-4-1)13-14-12-9-5-2-6-10-12/h1-10H/b14-13+

InChI key

DMLAVOWQYNRWNQ-BUHFOSPRSA-N

General description

Azobenzene is a chromogen and an azo compound that exhibits trans/cis isomerism yielding isomers that differ in color. It is a simple azoarene compound that shows cis-trans isomerization around the azo bond in response to light.

Application

Azobenzene and its derivatives have multiple applications in the field of mechanical and optical materials, in photopharmacology, and molecular photo-switches including in biological probes.
As human tissue is translucent to red and near-infrared light but opaque to blue and UV light, Azobenzene is important in medicine and photopharmacology for applications that involve shifting the absorptions of both trans and cis isomers of azobenzene to longer wavelengths.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Muta. 2 - STOT RE 2

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point (°F)

212.0 °F - closed cup

Flash Point (°C)

100.0 °C - closed cup

PPE (personal protective equipment)

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

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