STUDY OF THE STRUCTURE OF OLIGOMERS OBTAINED FROM SODIUM POLYSULFIDE EPICHLOROHYDRIN USING SPECTRAL METHODS . ITFTTDM [Internet]. 2025 Nov. 4 [cited 2026 May 18];3(10):386-9. Available from: https://universalpublishings.com/index.php/itfttdm/article/view/14155