109-84-2Relevant articles and documents
Synthesis of hydroxyethylhydrazine by the Raschig process and comparison with synthesis by the alkylation process
Goutelle,Pasquet,Hajj, A. El,Bougrine,Delalu
, p. 331 - 344 (2011)
The Raschig synthesis of hydroxyethylhydrazine (HEH) is studied, that is, the reaction of monochloramine on ethanolamine. The formation of HEH is monitored by UV spectrometry, and the influence of temperature and pH is studied. The primary reaction is an SN2-type mechanism, whereas the main secondary reaction is the oxidation of HEH by monochloramine. This reaction is also monitored by UV spectrometry, and the oxidation product is identified by GC-MS analysis, showing the formation of hydroxyethylhydrazone. The reaction mechanisms and the rate constants were determined, and the results permit establishing the main reactions occurring during HEH synthesis. These reactions were validated in a concentrated medium, with the systematic study of the influence of the molar ratio p ([HEH]0/[NH2Cl] 0) and the final sodium hydroxide concentration and temperature. A comparison is made with the other synthesis process already published, that is, the alkylation of hydrazine by either chloroethanol or epoxide.
Comparative Study on the Multielectron Reduction of HOC2H4N3 catalyzed by n4>42- and n4>2-modified Glassy Carbon Electrodes
Tanaka, Koji,Uezumi, Satoshi,Tanaka, Toshio
, p. 1547 - 1554 (1989)
Both N4>42- and n4>2-modified glassy carbon electrodes (/GC and /GC, respectively) can catalyse the multielectron reduction of HOC2H4N3 to afford not only HOC2H4NH2 and N2 but
Production of 2-hydroxy [...] of the micro-reactor apparatus and process for preparing
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Paragraph 0037; 0038, (2017/04/07)
The invention discloses a microreactor device for producing 2-hydroxyethylhydrazine and preparation process. The device comprises a feeding system, a mixing system, a reaction system, a backpressure valve, a cooling receiving system, a washing system and an external circulating bathing system, wherein the feeding system comprises a hydrazine hydrate storing tank, an oxirane storing tank and a feeding pump; the mixing system comprises a CPMM or SIMM or Starlam serial micro mixer; the reaction system comprises a rimule reactor section; the pressure of the backpressure valve ranges from 0 to 15MPa; the cooling receiving system comprises a CRMH serial micro heat exchanger and a receiving storing tank; the washing system comprises a washing storing tank and a washing pump which are connected in series; the hydrazine hydrate storing tank or oxirane storing tank, the feeding pump, the micro mixer, the rimule reactor, the backpressure valve, the micro heat exchanger and the receiving storing tank are connected in series; the mixing system, the reaction system and the cooling receiving system are respectively arranged at the circulating bathing system.