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The IUPAC name of 2,2',3,3',4,4'-hexachlorobiphenyl is 1,2,3-trichloro-4-(2,3,4-trichlorophenyl) benzene and its molecular formula is C 12 H 4 Cl 6. It is a light yellow, soft, sticky resin and has a boiling point of 385-420 °C. Its flash point lies around 141 °C and its melting point around 150 °C. [1]
1,2,4,5-tetrachlorobenzene once was used as intermediates in the production of pesicides, [3] specifically trichlorophenols. This method has been discontinued because it also produced 2,3,7,8-tetrachlorodibenzo-p- dioxin .
1,2,4,5-Tetrachloro-3-nitrobenzene (tecnazene) is an organic compound with the formula HC 6 Cl 4 NO 2. It is a colorless solid. A related isomer is 1,2,3,4-tetrachloro-5-nitrobenzene. It is used as a standard for quantitative analysis by nuclear magnetic resonance. [4] [5]
ANSI/ISA-TR88.00.02 defines ISA-S88 Part 1 and Part 5 concepts of Modes, States and data structures (PackTags) in a Package Machine environment and provides example implementations. PackML State Model Comparison of Physical Hierarchies. PackML has previously released versions 1, 2 & 3, with several implementations of version 2 in existence.
1 large head cauliflower (about 2 pounds), trimmed and cut into florets. 1 large onion, thinly sliced, or 1 leek halved lengthwise, well cleaned, and sliced. 4 large, unpeeled garlic cloves, optional.
1 2/3 c. Arrange racks in upper and lower thirds of oven; preheat to 350°. In a large bowl, whisk flour, baking soda, cinnamon, and salt. In the large bowl of a stand mixer fitted with the paddle ...
1,2,3,4-Tetraphenylnaphthalene is a polycyclic aromatic hydrocarbon commonly prepared in the undergraduate teaching laboratory as an introduction to the Diels-Alder reaction, in this case between benzyne, which acts as the dienophile, (generated in situ) and tetraphenylcyclopentadienone, which acts as the diene. [3]
Meanwhile, in a small saucepan over medium heat, cook 1/2 c. sugar and 1/2 c. water, stirring frequently, until sugar dissolves and starts to simmer around the edges, about 4 minutes. Remove from ...