1-Formyl-2,2-dimethylhydrazine as a new decomposition product of 1,1-dimethylhydrazine

Smolenkov, A. D.; Родин, И. А.; Shpak, Alexey V.; Шпигун, О. А.

doi:10.1080/03067310601068882

Cited by 33 publications

(9 citation statements)

References 10 publications

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“…It is noted that we did not in our head space analyses confirm the presence of compound 12 among the transformation products as claimed by Smolenkov et al (2007). However, taking the low vapour pressure and very low Henry’s Law Constant into account (Table 2), both actually being the lowest found among the transformation products studied here, it is not surprising that 12 did not show up among the products found in the head space analyses.…”

Section: Resultscontrasting

confidence: 60%

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A QSAR/QSTR Study on the Environmental Health Impact by the Rocket Fuel 1,1-Dimethyl Hydrazine and its Transformation Products

Carlsen¹,

Kenessov

Batyrbekova

2008

Environ�Health�Insights

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QSAR/QSTR modelling constitutes an attractive approach to preliminary assessment of the impact on environmental health by a primary pollutant and the suite of transformation products that may be persistent in and toxic to the environment. The present paper studies the impact on environmental health by residuals of the rocket fuel 1,1-dimethyl hydrazine (heptyl) and its transformation products. The transformation products, comprising a variety of nitrogen containing compounds are suggested all to possess a significant migration potential. In all cases the compounds were found being rapidly biodegradable. However, unexpected low microbial activity may cause significant changes. None of the studied compounds appear to be bioaccumulating.Apart from substances with an intact hydrazine structure or hydrazone structure the transformation products in general display rather low environmental toxicities. Thus, it is concluded that apparently further attention should be given to tri- and tetramethyl hydrazine and 1-formyl 2,2-dimethyl hydrazine as well as to the hydrazones of formaldehyde and acetaldehyde as these five compounds may contribute to the overall environmental toxicity of residual rocket fuel and its transformation products.

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Section: Resultscontrasting

confidence: 60%

“…The compounds 1 – 11 and 13 – 18 have all been detected during our experimental investigations, whereas 1-formyl 2,2-dimethyl hydrazine (12) recently was reported as a transformation product of 1 by (Smolenkov et al 2007). …”

Section: Resultsmentioning

confidence: 57%

A QSAR/QSTR Study on the Environmental Health Impact by the Rocket Fuel 1,1-Dimethyl Hydrazine and its Transformation Products

Carlsen¹,

Kenessov

Batyrbekova

2008

Environ�Health�Insights

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“…It is known that UDMH is highly reactive displaying strong reducing properties. Recent studies showed that UDMH spilled to the environment is transformed with formation of a number of compounds such as formaldehyde dimethylhydrazone (FADMH), tetramethyltetrazene (TMT), N-nitrosodimethylamine (NDMA), 1-methyl-1H-1,2,4-triazole (MTA), dimethylaminoacetonitrile (DMAACN), 1-formyl-2,2-dimethylhydrazine (FDMH) and 10 other compounds [6,7,8,9].…”

Section: Environmental Problem Statementmentioning

confidence: 99%

“…The number (15) of known transformation products of UDMH [6,7,8,9] is limited by the efficiency of analytical methods. SPME was used to improve characterization of UDMH transformation products.…”

Section: Identification Of Udmh Transformation Products In Soil Samplesmentioning

confidence: 99%

“…The use of SPME for sampling and sample preparation resulted in detection of the total of 55 new compounds, i.e., 12 new transformation products of UDMH (compounds No. 6,7,10,12,14,16,17,18,19,23,25,26,27); 9 compounds with lower MS match (and therefore lower degree of confidence in proper identification) and 34 compounds which can potentially be transformation products of UDMH (Table 2). This represents 80% increase of confirmed compounds known to be products of UDMH transformation in soil.…”

Section: Tablementioning

confidence: 99%

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Screening of transformation products in soils contaminated with unsymmetrical dimethylhydrazine using headspace SPME and GC–MS

Kenessov

Kozieł

Grotenhuis

et al. 2010

Analytica Chimica Acta

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The paper describes a novel SPME-based approach for sampling and analysis of transformation products of highly reactive and toxic unsymmetrical dimethylhydrazine (UDMH) which is used as a fuel in many Russian, European, Indian, and Chinese heavy cargo carrier rockets. The effects of several parameters were studied to optimize analyte recovery. It was found that the 85 microm Carboxen/polydimethylsiloxane fiber coating provides the highest selectivity for selected UDMH transformation products. Optimal sampling/sample preparation parameters were determined to be 1-h soil headspace sampling time at 40 degrees C. The GC inlet temperature was optimized to 170 degrees C held for 0.1 min, then 1 degrees C s(-1) ramp to 250 degrees C where it was held for 40 min. Temperature programming resulted in a fast desorption along with minimal chemical transformation in the GC inlet. SPME was very effective extracting UDMH transformation products from soil samples contaminated with rocket fuel. The use of SPME resulted in high sensitivity, speed, small labor consumption due to an automation and simplicity of use. It was shown that water addition to soil leads to a significant decrease of recovery of almost all target transformation products of UDMH. The use of SPME for sampling and sample preparation resulted in detection of the total of 21 new compounds that are relevant to the UDMH transformation in soils. In addition, the number of confirmed transformation products of UDMH increased from 15 to 27. This sampling/sample preparation approach can be recommended for environmental assessment of soil samples from areas affected by space rocket activity.

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Identification (Quantitative Determination and Detection) and Fate of Transformation Products of Rocket Fuel 1,1‐Dimethylhydrazine

Kenessov

Carlsen²

2014

Transformation Products of Emerging Contaminants in the Environment

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1-Formyl-2,2-dimethylhydrazine as a new decomposition product of 1,1-dimethylhydrazine

Cited by 33 publications

References 10 publications

A QSAR/QSTR Study on the Environmental Health Impact by the Rocket Fuel 1,1-Dimethyl Hydrazine and its Transformation Products

A QSAR/QSTR Study on the Environmental Health Impact by the Rocket Fuel 1,1-Dimethyl Hydrazine and its Transformation Products

Screening of transformation products in soils contaminated with unsymmetrical dimethylhydrazine using headspace SPME and GC–MS

Identification (Quantitative Determination and Detection) and Fate of Transformation Products of Rocket Fuel 1,1‐Dimethylhydrazine

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