NatashaPfeiffer
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09-29-2019
08:34 PM
What is the reaction?
Dbu and bromotrichloromethane, both aqueous, mixed together at room temperature. First changed from clear liquid to red, then darker. Then emitted a dark grey and black smoke, then turned into a black putty-like substance that spattered in the vial. Surface tension within the substance seemed very high and within a matter of moments, the spatter settled at the bottom of the vial. It seemed very exothermic as the vial was very hot. What could have happened here?
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Alexmadonik
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10-10-2019
12:41 PM
Re: What is the reaction?
The initial red color is probably bromine (Br2):
https://aip.scitation.org/doi/10.1063/1.1747207
The polymer could be derived from dichlorocarbene / tetrachloroethylene or from phosgene: