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Douma Chemical Attack
On 7 April 2018, a chemical warfare attack was carried out by forces of the government of Bashar al-Assad in the Syrian city of Douma. Medics and witnesses reported that it caused the deaths of between 40 and 50 people and injuries to possibly well over 100. The attack was attributed to the Syrian Army by rebel forces in Douma, and by the United States, British, and French governments. On 14 April 2018, the United States, France and the United Kingdom carried out a series of military strikes against multiple government sites in Syria. On 6 July 2018, an interim report was issued by the Organisation for the Prohibition of Chemical Weapons (OPCW). Various chlorinated organic chemicals (dichloroacetic acid, trichloroacetic acid, chlorophenol, dichlorophenol, bornyl chloride, chloral hydrate etc.) were found in samples, along with residues of explosive, but the designated laboratory 03 stated that no CWC-scheduled chemicals or nerve agent–related chemicals were detected. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rif Dimashq Offensive (February–April 2018)
The Rif Dimashq offensive (February–April 2018), code-named Operation Damascus Steel, was a military offensive launched by the Syrian Arab Army (SAA) in February 2018 in a bid to capture the rebel-held eastern Ghouta suburb during the Syrian Civil War. East Ghouta, a pocket of towns and farms, had been under government siege since 2013 and had been a major rebel stronghold in the vicinity of the capital of Damascus. According to the United Nations, nearly 400,000 people live in East Ghouta. On 14 April, the Syrian Army fully captured the Eastern Ghouta pocket. Before the offensive had concluded, the Associated Press reported that the capture of the whole rebel-held Eastern Ghouta enclave would represent one of the most significant victories for Syrian President Bashar al-Assad in the civil war, and the worst setback for the rebels since their defeat in the Battle of Aleppo in late 2016. Similarly, Reuters stated the capture of Eastern Ghouta would represent the biggest prize f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Government Of France
The Government of France ( French: ''Gouvernement français''), officially the Government of the French Republic (''Gouvernement de la République française'' ), exercises executive power in France. It is composed of the Prime Minister, who is the head of government, as well as both senior and junior ministers. The Council of Ministers, the main executive organ of the Government, was established in the Constitution in 1958. Its members meet weekly at the Élysée Palace in Paris. The meetings are presided over by the President of France, the head of state, although the officeholder is not a member of the Government. The Government's most senior ministers are titled as ministers of state (''ministres d'État''), followed in protocol order by ministers (''ministres''), ministers delegate (''ministres délégués''), whereas junior ministers are titled as secretaries of state (''secrétaires d'État''). All members of the Government, who are appointed by the President following ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syrian Arab Republic
Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country located in the Eastern Mediterranean and the Levant. It is a unitary state, unitary republic that consists of Governorates of Syria, 14 governorates (subdivisions), and is bordered by the Mediterranean Sea to the west, Turkey to the north, Iraq to Iraq–Syria border, the east and southeast, Jordan to Jordan–Syria border, the south, and Israel and Lebanon to Lebanon–Syria border, the southwest. Cyprus lies to the west across the Mediterranean Sea. A country of fertile plains, high mountains, and deserts, Syria is home to demographics of Syria, diverse ethnic and religious groups, including the majority Syrians, Syrian Arabs, Kurds in Syria, Kurds, Syrian Turkmen, Turkmens, Assyrians in Syria, Assyrians, Armenians in Syria, Armenians, Circa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OPCW Fact-Finding Mission In Syria
The OPCW Fact-Finding Mission in Syria is a mission of the Organisation for the Prohibition of Chemical Weapons (OPCW) to investigate some possible cases of the use of toxic chemicals in Syria during the civil war, including chlorine. The 21 August 2013 Ghouta chemical attack used sarin. The OPCW-Director General Ahmet Üzümcü announced the creation of the mission on 29 April 2014. This initial mission was headed by Malik Ellahi. The Syrian Government agreed to the Mission. The Mission took over the work of the OPCW-UN Joint Mission in Syria, which had been formed to oversee the elimination of the Syrian chemical weapons program, and which ended its activities on 30 September 2014. On 4 September 2014, the head of the Joint Mission reported to the UN Security Council that 96% of Syria's declared stockpile, including the most dangerous chemicals, had been destroyed and preparation were underway to destroy the remaining 12 production facilities, a task to be completed by the OPCW ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Nations
The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and international security, security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizing the actions of nations. It is the world's largest and most familiar international organization. The UN is headquarters of the United Nations, headquartered on extraterritoriality, international territory in New York City, and has other main offices in United Nations Office at Geneva, Geneva, United Nations Office at Nairobi, Nairobi, United Nations Office at Vienna, Vienna, and Peace Palace, The Hague (home to the International Court of Justice). The UN was established after World War II with Dumbarton Oaks Conference, the aim of preventing future world wars, succeeding the League of Nations, which was characterized as ineffective. On 25 April 1945, 50 governments met in San Francisco for United Nations Conference ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerve Agent
Nerve agents, sometimes also called nerve gases, are a class of organic chemicals that disrupt the mechanisms by which nerves transfer messages to organs. The disruption is caused by the blocking of acetylcholinesterase (AChE), an enzyme that catalyzes the breakdown of acetylcholine, a neurotransmitter. Nerve agents are acetylcholinesterase inhibitors used as poison. Poisoning by a nerve agent leads to constriction of pupils, profuse salivation, convulsions, and involuntary urination and defecation, with the first symptoms appearing in seconds after exposure. Death by asphyxiation or cardiac arrest may follow in minutes due to the loss of the body's control over respiratory and other muscles. Some nerve agents are readily vaporized or aerosolized, and the primary portal of entry into the body is the respiratory system. Nerve agents can also be absorbed through the skin, requiring that those likely to be subjected to such agents wear a full body suit in addition to a respirato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Weapons Convention
The Chemical Weapons Convention (CWC), officially the Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on their Destruction, is an arms control treaty administered by the Organisation for the Prohibition of Chemical Weapons (OPCW), an intergovernmental organization based in The Hague, The Netherlands. The treaty entered into force on 29 April 1997, and prohibits the large-scale use, development, production, stockpiling and transfer of chemical weapons and their precursors, except for very limited purposes (research, medical, pharmaceutical or protective). The main obligation of member states under the convention is to effect this prohibition, as well as the destruction of all current chemical weapons. All destruction activities must take place under OPCW verification. As of August 2022, 193 states have become parties to the CWC and accept its obligations. Israel has signed but not ratified the agreement, while three other U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloral Hydrate
Chloral hydrate is a geminal diol with the formula . It is a colorless solid. It has limited use as a sedative and hypnotic pharmaceutical drug. It is also a useful laboratory chemical reagent and precursor. It is derived from chloral (trichloroacetaldehyde) by the addition of one equivalent of water. History Chloral hydrate was discovered in 1832 by Justus von Liebig in Gießen when a chlorination ( halogenation) reaction was performed on ethanol. Its sedative properties were observed by Rudolf Buchheim in 1861, but described in detail and published only in 1869 by Oscar Liebreich; subsequently, because of its easy synthesis, its use became widespread. It was widely used for sedation in asylums and in general medical practice, and also became a popular drug of abuse in the late 19th century. One recreational user was the poet and illustrator Dante Gabriel Rossetti. Chloral hydrate is soluble in both water and ethanol, readily forming concentrated solutions. A solution of c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dichlorophenol
Dichlorophenols (DCPs) are any of several chemical compounds which are derivatives of phenol containing two chlorine atoms. There are six isomers: * 2,3-Dichlorophenol * 2,4-Dichlorophenol * 2,5-Dichlorophenol * 2,6-Dichlorophenol * 3,4-Dichlorophenol * 3,5-Dichlorophenol Dichlorophenols are used as intermediates in the manufacture of more complex chemical compounds, including the common herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). See also * Chlorophenol * Trichlorophenol * Pentachlorophenol Pentachlorophenol (PCP) is an organochlorine compound used as a pesticide and a disinfectant. First produced in the 1930s, it is marketed under many trade names. It can be found as pure PCP, or as the sodium salt of PCP, the latter of which diss ... References Chloroarenes Phenols {{chemistry index ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chlorophenol
A chlorophenol is any organochloride of phenol that contains one or more covalently bonded chlorine atoms. There are five basic types of chlorophenols (mono- to pentachlorophenol) and 19 different chlorophenols in total when positional isomerism is taken into account. Chlorophenols are produced by electrophilic halogenation of phenol with chlorine. Most chlorophenols are solid at room temperature. They have a strong, medicinal taste and smell. Chlorophenols are commonly used as pesticides, herbicides, and disinfectants. List of chlorophenols There is a total of 19 chlorophenols, corresponding to the different ways in which chlorine atoms can be attached to the five carbons in the benzene ring of the phenol molecule, excluding the carbon atom to which the hydroxy group is attached. Monochlorophenols have three isomers because there is only one chlorine atom that can occupy one of three ring positions on the phenol molecule; 2-chlorophenol, for example, is the isomer that has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichloroacetic Acid
Trichloroacetic acid (TCA; TCAA; also known as trichloroethanoic acid) is an analogue of acetic acid in which the three hydrogen atoms of the methyl group have all been replaced by chlorine atoms. Salts and esters of trichloroacetic acid are called trichloroacetates. Synthesis It is prepared by the reaction of chlorine with acetic acid in the presence of a suitable catalyst such as red phosphorus. This reaction is Hell–Volhard–Zelinsky halogenation. : + 3 → + 3 Another route to trichloroacetic acid is the oxidation of trichloroacetaldehyde. Use It is widely used in biochemistry for the precipitation of macromolecules, such as proteins, DNA, and RNA. TCA and DCA are both used in cosmetic treatments (such as chemical peels and tattoo removal) and as topical medication for chemoablation of warts, including genital warts. It can kill normal cells as well. It is considered safe for use for this purpose during pregnancy. The sodium salt (sodium trichloroacetate) was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dichloroacetic Acid
Dichloroacetic acid (DCA), sometimes called bichloroacetic acid (BCA), is the chemical compound with formula . It is an acid, an analogue of acetic acid, in which 2 of the 3 hydrogen atoms of the methyl group have been replaced by chlorine atoms. Like the other chloroacetic acids, it has various practical applications. The salts and esters of dichloroacetic acid are called dichloroacetates. Salts of DCA have been studied as potential drugs because they inhibit the enzyme pyruvate dehydrogenase kinase. Although preliminary studies found that DCA can slow the growth of certain tumors in animal studies and ''in vitro'' studies, as of 2012 insufficient evidence supported the use of DCA for cancer treatment. Chemistry and occurrence The chemistry of dichloroacetic acid is typical for halogenated organic acids. It is a member of the chloroacetic acids family. The dichloroacetate ion is produced when the acid is mixed with water. As an acid with a p''K''a of 1.35, pure dichloroacetic a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
