Study on thermal hazard and quenching of O-(3-chloro-2-propenyl)-hydroxylamine

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Abstract In order to study the thermal hazard and quenching of O-(3-chloro-2-propenyl)-hydroxyla-mine, differential scanning calorimeter (DSC) and adiabatic calorimeter (Phi-TEC) were used. DSC test results show that compared with testing atmosphere and heating rate, sample mass has a greater influence on the thermal risk of O-(3-chloro-2-propenyl)-hydroxylamine. When the mass of O-(3-chloro-2-propenyl)-hydroxylamine exceeds 1 mg, its DSC curve at the peak temperature is very sharp, which indicates an explosive exothermic reaction occurs. Under the DSC test conditions of 0.56 mg, 4 ℃·min^-1 and air atmosphere for O-(3-chloro-2-propenyl)-hydroxylamine, the onset temperature of decomposition reaction is 114 ℃, the peak temperature is 192 ℃, and the specific heat release is 2 105 J·g^-1. Phi-TEC test results show that in addition to releasing a large amount of heat, a large amount of non-condensable gas was produced during the thermal decomposition of O-(3-chloro-2-propenyl)-hydroxylamine, which may lead to an overpressure explosion in a hermatic container. A preliminary study shows that at the initial exothermic stage of O-(3-chloro-2-propenyl)-hydroxylamine the decomposition reaction can be quenched by adding 1.5 times the mass of O-(3-chloro-2-propenyl)-hydroxylamine of water. In order to obtain a practical quenching process, further detailed research is needed.

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	WANG Jianna
	HAN Mengmeng
	NING Yanxia
	XU Mingqin
	JIN Xiaohui

Keywords： O-(3-chloro-2-propenyl)-hydroxylamine； thermal hazard； quenching； differential scanning calorimeter； adiabatic calorimeter

Received 2021-03-04;

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WANG Jianna, HAN Mengmeng, NING Yanxia, XU Mingqin, JIN Xiaohui.Study on thermal hazard and quenching of O-(3-chloro-2-propenyl)-hydroxylamine[J] Chemcial Industry and Engineering, 2022,V39(1): 27-32

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