SYNTHESIS OF DIMETHYL DISULFIDE BY REACTION OF SODIUM DISULFIDE AND METHYL CHLORIDE IN A WATER-DODECANE MEDIUM IN THE PRESENCE OF OXYETHYLATED PHENOLS

Ramil' N. Gizyatullov; R. M. Ahmadullin; R A Ahmed'yanova; George Kunda

doi:10.55421/3034-4689_2026_29_10_71

SYNTHESIS OF DIMETHYL DISULFIDE BY REACTION OF SODIUM DISULFIDE AND METHYL CHLORIDE IN A WATER-DODECANE MEDIUM IN THE PRESENCE OF OXYETHYLATED PHENOLS

Published in Herald of Technological University · Volume 29, Issue 10, 2026 · Pages 71–76 · Rubric: 2. Chemical Technology

DOI: https://doi.org/10.55421/3034-4689_2026_29_10_71 · EDN: TDOZAH

Received: 18.09.2026 Accepted: 10.10.2026 Published: 30.10.2026

Authors

Ramil' N. Gizyatullov

R. M. Ahmadullin

R A Ahmed'yanova

George Kunda

Ramil' N. Gizyatullov

Kazan National Research Technological University Synthetic rubber technology · Kazan

R. M. Ahmadullin

OOO NTC «Ahmadulliny» Russian Federation

R A Ahmed'yanova

KNITU

George Kunda

LLC "R D "AkhmadullinS" Engineer · Russian Federation · Kazan

ABSTRACT

It was found that during alkylation of sodium disulfide in an aqueous organic medium with methyl chloride, the introduction of surfactant - oxyethylated nonyl phenol - neonol has a significant effect on the yield of dimethyl disulfide (DMDS) and the initial rate of its formation. Dodecane is used as an organic solvent. The syntheses were carried out in a stainless steel autoclave in the presence of dodecane and ethoxylated nonylphenol -neonol AF with a degree of oxyethylation of 6, 10 or 12 in the reaction mixture. After the experiment was completed, the organic phase was separated, dried, and weighed. The identification and quantification of DMDS was performed by gas chromatography. The residual content of sulfide and hydrogensulfide ions in the aqueous phase was determined by precipitation potentiometric titration using a silver nitrate solution. It has been shown that at the same dodecane concentration of 0.64 mol/l, the highest yield of DMDS over a reaction time of 15 minutes is achieved at a concentration of neonol AF 9-12 = 5.94 * 10-3 mol/l; an increase in this concentration to 7.43 * 10-3 mol/l does not lead to a further increase in the yield of DMDS. The yield of dimethyl disulfide also depends on the degree of oxyethylation of nonylphenol, with an increase in the degree of oxyethylation from 6 to 12, the yield of DMDS in 15 minutes increases from 22 to 40 and 51%. The observed effect may be associated with an increase in the interfacial surface and intensification of methyl chloride transfer in the surface-active dodecane-neonol system. When using the dodecane system : neonol AF 9-12 = 11:1, mol. The initial accumulation rate of DMDS is about 14 times higher than in the experiment without additives. The period of low reaction rate observed in the experiment without additives in the first 30 minutes is absent, in general, after 2 hours of reaction, the yield of DMDS reaches 76%. It is shown that the observed pattern is due to differences in the hydrophilic-lipophilic balance, solubility, and the ability of neonols to stabilize the interfacial surface.

KEYWORDS

DIMETHYL DISULFIDE, DODECANE, NEONOL, METHYL CHLORIDE, SODIUM DISULFIDE

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Gizyatullov R. N., Ahmadullin R. M., , Kunda G. SYNTHESIS OF DIMETHYL DISULFIDE BY REACTION OF SODIUM DISULFIDE AND METHYL CHLORIDE IN A WATER-DODECANE MEDIUM IN THE PRESENCE OF OXYETHYLATED PHENOLS // Herald of Technological University. 2026. no. 10. pp. 71-76. DOI: https://doi.org/10.55421/3034-4689_2026_29_10_71. EDN: TDOZAH. (Date of access 15.11.2026).

MLA

Ramil' N. Gizyatullov, Ahmadullin R. M., , Kunda G.. "SYNTHESIS OF DIMETHYL DISULFIDE BY REACTION OF SODIUM DISULFIDE AND METHYL CHLORIDE IN A WATER-DODECANE MEDIUM IN THE PRESENCE OF OXYETHYLATED PHENOLS." Herald of Technological University 29.10 (2026): 71-76. DOI: https://doi.org/10.55421/3034-4689_2026_29_10_71. EDN: TDOZAH.

APA

Gizyatullov R. N., Ahmadullin R. M., , Kunda G. (2026). SYNTHESIS OF DIMETHYL DISULFIDE BY REACTION OF SODIUM DISULFIDE AND METHYL CHLORIDE IN A WATER-DODECANE MEDIUM IN THE PRESENCE OF OXYETHYLATED PHENOLS. Herald of Technological University, 29(10), 71-76. https://doi.org/10.55421/3034-4689_2026_29_10_71 EDN: TDOZAH.

Chicago

Ramil' N. Gizyatullov, Ahmadullin R. M., , Kunda G.. "SYNTHESIS OF DIMETHYL DISULFIDE BY REACTION OF SODIUM DISULFIDE AND METHYL CHLORIDE IN A WATER-DODECANE MEDIUM IN THE PRESENCE OF OXYETHYLATED PHENOLS." Herald of Technological University 29, no. 10 (2026): 71-76. https://doi.org/10.55421/3034-4689_2026_29_10_71. EDN: TDOZAH.

WIKI

{{cite journal | author = Gizyatullov R. N., Ahmadullin R. M., , Kunda G. | title = SYNTHESIS OF DIMETHYL DISULFIDE BY REACTION OF SODIUM DISULFIDE AND METHYL CHLORIDE IN A WATER-DODECANE MEDIUM IN THE PRESENCE OF OXYETHYLATED PHENOLS | journal = Herald of Technological University | year = 2026 | volume = 29 | issue = 10 | pages = 71-76 | doi = 10.55421/3034-4689_2026_29_10_71 }} EDN: TDOZAH

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