16131-53-6

Basic information

• Product Name: 1,4-Dimorpholino-1,2,3,4-tetrathiabutane
• Synonyms: 1,4-Dimorpholino-1,2,3,4-tetrathiabutane;4,4'-Pertetrathiobismorpholine;Bis(morpholin-4-yl) pertetrasulfide
• CAS NO: 16131-53-6
• Molecular Formula: C₈H₁₆N₂O₂S₄
• Molecular Weight: 300.4848
• Mol File: 16131-53-6.mol
• Article Data: 4

Chemical Properties

• Melting Point: 118.5-119.5 °C(Solv: benzene (71-43-2))
• Boiling Point: 456.6°Cat760mmHg
• Flash Point: 229.9°C
• Appearance: /
• Density: 1.46g/cm³
• PKA: -1.40±0.20(Predicted)
• CAS DataBase Reference: 1,4-Dimorpholino-1,2,3,4-tetrathiabutane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,4-Dimorpholino-1,2,3,4-tetrathiabutane(16131-53-6)
• EPA Substance Registry System: 1,4-Dimorpholino-1,2,3,4-tetrathiabutane(16131-53-6)

Safety Data

• Hazardous Substances Data: 16131-53-6(Hazardous Substances Data)

Upstream product

• 5038-11-9 N,N'-thiodimorpholine 
• 110-91-8 morpholine 

Relevant articles and documents

Crystal and Molecular Structures of Dimorpholinotetrasulphane

The tetrasulphane S4(NC4H8O)2 crystallizes in the tetragonal space group I41/a (no. 88) with a=b=12.812(1), c=16.733(2) Angstroem, and Z=8.The structure has been determined by X-ray diffraction from Mo-Kα diffractometer data and refined by full-matrix least-squares to R 0.045 for 948 observed reflections.The molecules lie across crystallographic two-fold axes.The N-S-S-S-S-N chains occur in the trans-trans form, with N-S 1.668(3), S-S (terminal) 2.061(2), S-S (central) 2.078(3) Angstroem, N-S-S 109.1(2), S-S-S 105.8(1) deg, NSS-SSS 90.3. and SSS-SSS 79.9 deg.The morpholine groups occur in the chair form, with N-S equatorial.The S-S bonds alternate only slightly in length along the chain, like the Se-Se bonds in the isomorphous tetraselane analogue.

Process for the preparation of N-tetrathiodimorpholine

There is disclosed a process for the preparation of N-tetrathiodimorpholine wherein an admixture of morpholine and elemental sulfur is oxidized with air or oxygen in the presence of iron salts and iron complexes to yield N-tetrathiodimorpholine.