20062-22-0

Basic information

• Product Name: Hexanitro-1,2-diphenylethylene
• Synonyms: Hexanitrostilbene;Hexanitro-1,2-diphenylethylene;2,2',4,4',6,6'-hexanitrostilbene;1,1'-(1,2-Ethenediyl)bis(2,4,6-trinitrobenzene);HNS;Benzene, 1,1-(1,2-ethenediyl)bis2,4,6-trinitro-;1,2-Bis(2,4,6-trinitrophenyl)ethene;hexanitrostibene
• CAS NO: 20062-22-0
• Molecular Formula: C₁₄H₆N₆O₁₂
• Molecular Weight: 450.23044
• EINECS: 243-494-5
• Mol File: 20062-22-0.mol
• Article Data: 9

Chemical Properties

• Melting Point: 211 °C (decomp)
• Boiling Point: 558.4°C (rough estimate)
• Flash Point: 275.4°C
• Appearance: /
• Density: 1.5878 (rough estimate)
• Refractive Index: 1.7000 (estimate)
• Water Solubility: 201mg/L
• CAS DataBase Reference: Hexanitro-1,2-diphenylethylene(CAS DataBase Reference)
• NIST Chemistry Reference: Hexanitro-1,2-diphenylethylene(20062-22-0)
• EPA Substance Registry System: Hexanitro-1,2-diphenylethylene(20062-22-0)

Safety Data

• RIDADR: 0392
• HazardClass: 1.1D
• PackingGroup: II
• Hazardous Substances Data: 20062-22-0(Hazardous Substances Data)

Usage

General Description

An explosive. May explode under prolonged exposure to heat. Primary hazard is the blast effect of an instantaneous explosion and not flying projectiles and fragments. Forms yellow crystals.

Reactivity Profile

Hexanitro-1,2-diphenylethylene may be considered an oxidizing agent. If mixed with reducing agents, including hydrides, sulfides and nitrides, may begin a vigorous reaction that culminates in a detonation. May explode in the presence of a base such as sodium hydroxide or potassium hydroxide even in the presence of water or organic solvents.

Health Hazard

Fire may produce irritating, corrosive and/or toxic gases.

Fire Hazard

MAY EXPLODE AND THROW FRAGMENTS 1600 meters (1 MILE) OR MORE IF FIRE REACHES CARGO.

Upstream product

• 118-96-7 2,4,6-Trinitrotoluene 
• 606-34-8 2,4,6-trinitrobenzaldehyde 
• 5180-53-0 1,2-bis(2,4,6-trinitrophenyl)ethane 
• 59038-66-3 3-Chlor-2,2',4,4',6,6'-hexanitrostilben 
• 7176-28-5 2,4,6-Trinitrobenzyl chloride 
• 124-40-3 dimethyl amine 

Downstream Products

• 606-34-8 2,4,6-trinitrobenzaldehyde 

Relevant articles and documents

A Green and Effective Approach of Two-Step 2,2′,4,4′,6,6′-Hexanitrostilbene Preparation and Its Industrial Scale Study

An environmental friendly approach for two-step synthesis of hexanitrostilbene (HNS) has been studied here. In the first step from trinitrotoluene (TNT) to hexanitrobienzyl (HNBB), commercial NaClO was employed as oxidant in mixed solvent of ethyl acetate/ethanol (0.25 mL/1.25 mL per mmol of TNT) instead of benzene/ethanol. In the second step from HNBB to HNS, 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)/FeCl2 was used as an effective catalytic system with O2 in DMSO solvent. A complex of metal ion and O2 [M(n+1)OO?] was supposed to be the active agent, and TEMPO itself was difficult to initiate dehydrogenation of HNBB but could promote the catalytic cycle of complex M(n+1)OO?. Finally, we increased the scale from 30 to 1000 g to investigate the feasibility of production. The total yield of two steps would be unprecedentedly as high as 70%.

Preparation method and application of O-nitrobenzaldehyde

The invention relates to a preparation method of o-nitrobenzaldehyde. The preparation method comprises the following steps: reacting o-nitrobenzyl triphenylphosphonium bromide with the required product o-nitrobenzaldehyde as raw materials to generate 1, 2-bis (o-nitrophenyl) ethylene, and oxidizing with ozone to obtain o-nitrobenzaldehyde. The preparation method has the beneficial effects that only a proper amount of alkali is used for catalysis in a condensation reaction, and an intermediate product 1, 2-bis (o-nitrophenyl) ethylene can be efficiently obtained by catalysis of an alkaline water reaction; and gas-liquid reaction is performed by using a micro-channel reactor to finally obtain the required nitrobenzaldehyde. The method has the advantages of less used raw materials, high reaction yield, less by-products and impurities, simple and feasible purification operation, and convenience for industrial production in workshops. Under the condition that the current chemical engineering environment protection and safety situation is severe, the process route can stably supply the important chemical intermediates of the type in an environment-friendly mode with the extremely high atom utilization rate.

Synthetic method of hexanitrostilbene

The invention discloses a synthetic method of hexanitrostilbene (HNS). The method is used for solving the problems of high quality requirement, difficult weighing and irritant gas generation of liquid bromine used in the process for synthesizing the HNS from hexanitrobibenzyl. The HNS is prepared from the hexanitrobibenzyl under the action of a solid dehydrogenating agent by using a mixed solvent as a solvent. The method is mainly used for synthesizing the HNS.