99-51-4

Basic information

• Product Name: 4-Nitro-o-xylene
• Synonyms: 1,2-dimethyl-4-nitro-benzen;3,4-Dimethyl-1-nitrobenzene;4-nitro-o-xylen;o-Xylene, 4-nitro-;para-Nitro-ortho-xylene;p-Nitro-o-xylene;1,2-DIMETHYL-4-NITROBENZENE;4-NITRO-1,2-DIMETHYLBENZENE
• CAS NO: 99-51-4
• Molecular Formula: C₈H₉NO₂
• Molecular Weight: 151.16
• EINECS: 202-761-6
• Product Categories: Aromatic Hydrocarbons (substituted) & Derivatives
• Mol File: 99-51-4.mol
• Article Data: 45

Chemical Properties

• Melting Point: 29 °C
• Boiling Point: 255 °C
• Flash Point: >230 °F
• Appearance: yellow crystalline solid
• Density: 1.139 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.0163mmHg at 25°C
• Refractive Index: 1.555-1.557
• Storage Temp.: Store below +30°C.
• Solubility: 0.1g/l
• Water Solubility: 100 mg/L (25 ºC)
• Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
• BRN: 2043245
• CAS DataBase Reference: 4-Nitro-o-xylene(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Nitro-o-xylene(99-51-4)
• EPA Substance Registry System: 4-Nitro-o-xylene(99-51-4)

Safety Data

• Hazard Codes: Xn,T
• Statements: 20/21/22-36/37/38-23/24/25
• Safety Statements: 22-36/37-45-36/37/39-26-13
• RIDADR: UN 3447 6.1/PG 2
• WGK Germany: 2
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: II
• Hazardous Substances Data: 99-51-4(Hazardous Substances Data)

Usage

Chemical Properties

yellow crystalline solid

General Description

Yellow prisms or yellow crystalline solid.

Air & Water Reactions

Slightly soluble in water.

Reactivity Profile

4-Nitro-o-xylene is incompatible with strong oxidizers and strong bases.

Fire Hazard

4-Nitro-o-xylene is combustible.

InChI:InChI=1/C8H9NO2/c1-6-3-4-8(9(10)11)5-7(6)2/h3-5H,1-2H3

Upstream product

• 6972-71-0 4,5-dimethyl-2-nitrobenzenamine 
• 95-47-6 o-xylene 
• 108-24-7 acetic anhydride 
• 31599-61-8 3,4-dimethyliodobenzene 
• 458566-99-9 4,5-dimethyl-2-(trimethylsilyl)phenyl triflate 
• 95-64-7 4-amino-o-xylene 
• 594-27-4 tetramethylstannane 
• 99321-75-2 5,6-dimethyl-2,6-dinitrocyclohexa-2,4-dienyl acetate 
• 930-69-8 sodium thiophenolate 
• 108-67-8 1,3,5-trimethyl-benzene 
• 99321-70-7 5,6-dimethyl-2,6-dinitrocyclohexa-2,4-dienyl methyl ether 
• 7697-37-2 nitric acid 
• 64-19-7 acetic acid 
• 7664-93-9 sulfuric acid 

Downstream Products

• 91748-02-6 2-(2-Methyl-4-nitro-phenyl)-ethanol 
• 89729-73-7 2-(2-methyl-4-nitrophenyl)-1,3-propanediol 
• 73475-25-9 4,5-Dimethyl-2,4-dinitrocyclohexa-2,5-dienylacetat 
• 38899-22-8 1,2-dimethyl-4-nitrosobenzene 
• 610-23-1 4,5-dimethyl-1,2-dinitrobenzene 
• 616-69-3 1,2-dimethyl-3,5-dinitrobenzene 
• 603-06-5 1,2-dimethyl-3,4-dinitrobenzene 
• 107016-62-6 2,2'-dimethyl-4,4'-dinitro-stilbene 
• 3051-94-3 3,4-dimethyl-N-ribitylaniline 
• 1562441-58-0 C₂₆H₃₂N₄O₃ 
• 270256-21-8 4-azido-1,2-dimethylbenzene 
• 6425-66-7 1,2-bis-bromomethyl-4-nitro-benzene 
• 22162-14-7 1-(bromomethyl)-2-methyl-4-nitrobenzene 
• 127168-68-7 2,3-Dihydro-5-nitro-2-(phenylmethyl)-1H-isoindole 

Relevant articles and documents

Photoinduced Iron-Catalyzed ipso-Nitration of Aryl Halides via Single-Electron Transfer

A photoinduced iron-catalyzed ipso-nitration of aryl halides with KNO2 has been developed, in which aryl iodides, bromides, and some of aryl chlorides are feasible. The mechanism investigations show that the in situ formed iron complex by FeSO4, KNO2, and 1,10-phenanthroline acts as the light-harvesting photocatalyst with a longer lifetime of the excited state, and the reaction undergoes a photoinduced single-electron transfer (SET) process. This work represents an example for the photoinduced iron-catalyzed Ullmann-type couplings.

Cyhalofop-containing pesticide composition and application thereof

The invention discloses a pesticide composition containing cyhalofop-butyl and application thereof, belongs to the technical field of pesticide preparation and comprises 10 - 20 parts of cyhalofop-butyl. Tetramethyl chloride 3-5 parts, synergistic microcapsule 8-13 parts, wetting agent 1.5 - 4.5 parts, dispersing agent 1-3 parts, defoaming agent 0.5 - 1.5 parts and water 40 - 50 parts. When the water in the soil is less, the weed is absorbed by the chitosan so as to accelerate the absorption of A the synergic microcapsule and the cyhalofop-butyl ester, so that the pesticide composition is greatly reduced per mu.

Method and device for preparing methylnitro-benzene by channelization

The invention discloses a method and a device for preparing methylnitro-benzene by channelization. The device comprises a storage tank, a nitrogen dioxide cylinder, an ozone generator, a flow pump, agas flowmeter, a reaction pipeline filled with a catalyst, a mixing pipeline, two T-shaped mixed joints, a cooling system, a heating system, a back pressure valve and a receiving tank. The method specifically comprises the following steps: opening the cooling system and the heating system; opening the ozone generator; arranging the flow pump and the gas flowmeter; and mixing raw materials liquid methyl benzene and nitrogen dioxide through the first T-shaped mixing joint and feeding the mixture into the mixing pipeline, then mixing the mixture with ozone in the second T-shaped mixing joint, feeding the mixture into the reaction pipeline filled with the catalyst for a nitrifying reaction, and post-treating a reaction liquid to obtain methylnitro-benzene. The method is controlled precisely and automatically, and is simple to operate, mild in reaction condition, simple in post treatment, quick to transfer mass and heat, high in safety and good in economical benefit.