ARSENIC TRICHLORIDE Meaning and
Definition
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Arsenic trichloride is a chemical compound with the molecular formula AsCl3. It is a highly toxic and volatile liquid that is colorless in its pure form but often appears yellowish due to impurities. Arsenic trichloride is primarily used in chemical synthesis and research, especially in the preparation of other arsenic compounds.
In terms of its physical properties, arsenic trichloride has a strong, pungent odor and high vapor pressure. It is highly reactive and decomposes in the presence of moisture, releasing toxic fumes of hydrochloric acid and arsenous oxide. Its boiling point is around 130 degrees Celsius, but it starts to decompose at lower temperatures.
From a chemical perspective, arsenic trichloride behaves as a Lewis acid, readily accepting electron pairs from other substances. Due to its reactivity, it can react with a variety of compounds such as alcohols, amines, and thiols, often resulting in the substitution of chlorine atoms. Its reactions with water and organic compounds can produce highly toxic and flammable gases, making it crucial to handle with extreme care.
In terms of its toxicity, arsenic trichloride poses significant health hazards as it is highly poisonous. Its fumes can cause severe eye, skin, and respiratory tract irritation, while ingestion or absorption through the skin can lead to more severe symptoms, including abdominal pain, vomiting, and even death. Thus, it is considered a dangerous substance that needs to be handled in a controlled environment and with appropriate safety precautions.
Etymology of ARSENIC TRICHLORIDE
The word "arsenic trichloride" is a chemical compound name composed of two parts: "arsenic" and "trichloride".
The term "arsenic" dates back to the 14th century and originates from the Latin word "arsenicum" or "arsenikon", which, in turn, comes from the Greek word "arsenikon", meaning "yellow orpiment". The Greek word is derived from the Persian word "zarnīkh/zarnīk", referring to arsenic sulfide minerals. The element arsenic was named after these minerals.
The term "trichloride" is made up of two parts: "tri-" meaning three and "-chloride" referring to a compound containing chlorine. "Chloride" itself comes from the Latin word "chloris" or "chloros", meaning "greenish-yellow".
