4-(4-Nitrophenyl)azoresorcinol
- Product Name
- 4-(4-Nitrophenyl)azoresorcinol
- CAS No.
- 74-39-5
- Chemical Name
- 4-(4-Nitrophenyl)azoresorcinol
- Synonyms
- MAGNESON;MagnesonⅠ;AZO VIOLET;MAGNESON I;MagnesonIGr;MagnesonIiGr;p-diazviolet;MagnesonⅠ, AR;Magneson I AR;AZOVIOLET BENZENE
- CBNumber
- CB0106591
- Molecular Formula
- C12H9N3O4
- Formula Weight
- 259.22
- MOL File
- 74-39-5.mol
4-(4-Nitrophenyl)azoresorcinol Property
- Melting point:
- 195-200 °C (dec.)(lit.)
- Boiling point:
- 402.47°C (rough estimate)
- Density
- 1.3450 (rough estimate)
- refractive index
- 1.5700 (estimate)
- storage temp.
- Store below +30°C.
- form
- Powder
- pka
- 8.05±0.35(Predicted)
- color
- Orange-red to red
- Odor
- Odorless
- Appearance
- Red, Orange or Red-Orange Powder
- Water Solubility
- Soluble in dilute sodium hydroxide. Insoluble in water.
- λmax
- 432 nm
- Merck
- 14,5695
- BRN
- 674709
- Stability:
- Stable. Incompatible with strong oxidizing agents, strong bases.
- Major Application
- diagnostic assay manufacturing
hematology
histology - InChI
- 1S/C12H9N3O4/c16-10-5-6-11(12(17)7-10)14-13-8-1-3-9(4-2-8)15(18)19/h1-7,16-17H/b14-13+
- InChIKey
- NGPGYVQZGRJHFJ-BUHFOSPRSA-N
- SMILES
- Oc1ccc(\N=N\c2ccc(cc2)[N+]([O-])=O)c(O)c1
- CAS DataBase Reference
- 74-39-5(CAS DataBase Reference)
- EPA Substance Registry System
- 1,3-Benzenediol, 4-[(4-nitrophenyl)azo]- (74-39-5)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405Store locked up.
N-Bromosuccinimide Price
- Product number
- 114669
- Product name
- 4-(4-Nitrophenylazo)resorcinol
- Purity
- Dye content 90%
- Packaging
- 25g
- Price
- $69.6
- Updated
- 2025/07/31
- Product number
- 8.41713
- Product name
- 4-(4-Nitrophenylazo)-resorcinol
- Purity
- for synthesis
- Packaging
- 25G
- Price
- $135
- Updated
- 2025/07/31
- Product number
- 114669
- Product name
- 4-(4-Nitrophenylazo)resorcinol
- Purity
- Dye content 90%
- Packaging
- 100g
- Price
- $227
- Updated
- 2025/07/31
- Product number
- N0135
- Product name
- Magneson
- Packaging
- 1g
- Price
- $19
- Updated
- 2025/07/31
- Product number
- N0135
- Product name
- Magneson
- Packaging
- 25g
- Price
- $39
- Updated
- 2025/07/31
4-(4-Nitrophenyl)azoresorcinol Chemical Properties,Usage,Production
Description
Oxygen violet can be prepared by one-step reaction of p-nitroaniline and 1,3-benzenediol. Azo violet can be used to prepare an azobenzene photochromic liquid crystal compound. Photochromic liquid crystal compounds have both photochromic properties and liquid crystallinity, which has become a research hotspot in the field of information storage. Azobenzene-based liquid crystals are the most interesting photochromic liquid crystal materials in recent years due to their unique photoinduced cis-trans isomerism. Azobenzene compounds undergo reversible cis-trans isomerization under the action of light, which makes them have great potential applications in many aspects such as optical storage, photo-holography and optical information processing.
Chemical Properties
dark red to brown crystalline powder
Uses
It is a derivitized resorcinol dye compound with an absorption maximum of 432 nm. Used as a pH indicator.
Uses
4-(4-Nitrophenyl)azoresorcinol is used for the detection of magnesium with which it yields a bright blue color in alkaline solution and it also used to determine molybdenum with which it forms a red-violet complex: Nikitina, Andrianova, C.A. 75, 136789v (1971).
Definition
ChEBI: 4-(4-nitrophenylazo)resorcinol is an azobenzene in which the phenyl rings are 4-nitro- and 2,4-dihydroxy-substituted respectively. It is a member of resorcinols, a C-nitro compound and a member of azobenzenes.
Biochem/physiol Actions
4-(4-Nitrophenylazo)resorcinol is a pH indicator.
Synthesis
A solution of NaNO2 (1.035 g) in deionized water (15 mL) is slowly added to a solution of p-nitroaniline (2.07 g) in hydrochloric acid (2.5 mol/L, ) 10 mL) in hydrochloric acid (2.5 mol/L, ). The solution is held at 0??C for 1 hour under vigorous mechanical stirring. The solution was then washed with ammonia and deionized water until the pH of the filtrate reached 7. The diazonium salt was then washed with ammonia and deionized water until the pH of the filtrate reached 7. The diazonium salt solution is then added to a solution of 1,3-benzenediol (1.65 g) and sodium hydroxide (1.2 g) in deionized water (60 mL) at 0??C and held under stirring for 1 hour. 1 hour. The solid precipitate was washed with ammonia and deionized water until the pH of the filtrate reached 7. The resulting precipitate was filtered and the crude product was recrystallized twice with ethanol. The orange-red compound apoxidized violet was obtained in 73.8% yield.
Purification Methods
Crystallise the dye from EtOH. [Beilstein 16 H 181, 16 IV 1266.]
4-(4-Nitrophenyl)azoresorcinol Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 4-(4-Nitrophenyl)azoresorcinol manufacturers
- Product
- 4-(4-Nitrophenyl)azoresorcinol 74-39-5
- Price
- US $4.00/kg
- Min. Order
- 1kg
- Purity
- 0.99
- Supply Ability
- 10000
- Release date
- 2024-08-08
- Product
- 4-(4-Nitrophenylazo)resorcinol 74-39-5
- Price
- US $5.00-2.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 10000kg
- Release date
- 2024-08-22
- Product
- 4-(4-Nitrophenyl)azoresorcinol 74-39-5
- Price
- US $0.10/KG
- Min. Order
- 1KG
- Purity
- 98.0%
- Supply Ability
- 10
- Release date
- 2024-08-04