37488-76-9

Upstream product

• 10544-50-0 sulfur 
• 7440-23-5 sodium 
• 7704-34-9 sulfur 
• 1310-73-2 sodium hydroxide 
• 497-19-8 sodium carbonate 
• 1313-82-2 sodium sulfide 
• 7783-06-4 hydrogen sulfide 

Downstream Products

• 85533-96-6 tetrabutylammonium hexasulfide 
• 1313-82-2 sodium sulfide 

Relevant academic research and scientific papers

Granulated sulfur-containing sorbents for recovery of heavy metal ions from aqueous solutions

Granulated sorbents that can recover zinc salts from aqueous solutions were produced by poly-condensation of organochlorine wastes from manufacture of epichlorohydrin with sodium polysulfide on the surface of ash-and-slag particles formed at thermal power

Na2GaS2Cl: A new sodium-rich chalcohalide with two-dimensional [GaS2]∞layers and wide interlayer space

By introducing halogens to the A/Ga/Q (A = Na, K; Q = S, Se) system, one new chalcohalide namely Na2GaS2Cl was successfully obtained. It crystallizes in the orthorhombic space group Cmcm (63). Na2GaS2Cl has a layered structure consisting of two dimensional [GaS2]∞ layers which are stacked in face to face and back to back arrays and separated by Na+ and Cl- ions. Interestingly, supertetrahedral building units [Ga4S10] (T2) which are rarely found in metal chalcogenides and metal chalcohalides are formed in this structure. Moreover, the distances of two adjacent layers are around four times larger than the ionic radius of the Na+ ion, which is very likely to provide a perfect environment for the storage and migration of Na+ ions. In particular, the volume concentration of the Na+ cations in this compound is as high as 1.54 × 1022 cm-3. The UV-vis-NIR spectroscopy measurement reveals that the optical band gap of this title compound is 3.06 eV. The electronic structural calculations on Na2GaS2Cl show that the band gap is mainly determined by the [GaS4] groups and Na-Cl ionic bonding.

Preparation of sulfide chain-bearing organosilicon compounds

By reacting a halogenoalkyl group-bearing organosilicon compound and optionally sulfur with an aqueous solution or water dispersion of an ammonium or alkali metal polysulfide or a hydrate thereof in the presence of a phase transfer catalyst, a sulfide chain-bearing organosilicon compound having the average compositional formula (2): [in-line-formulae](R1O)(3-p)(R2)pSi—R3—S—R3—Si(OR1)(3-p)(R2)p ??(2) [/in-line-formulae] wherein m has an average value of 2≦m≦6 is obtained in high yields and at a low cost with minimized formation of a monosulfide-bearing organosilicon compound.

Direct preparation of anhydrous sodium oligosulfides from metal sodium and elemental sulfur in aprotic organic media directed toward synthesis of silane coupling agent

Anhydrous sodium oligosulfide was prepared by the heterogeneous reaction of metal sodium and elemental sulfur in aprotic solvents. The oligosulfide consisted of a mixture of several Na2Sn (n = 2 - 8). Organic oligosulfides (R2Sn, n ≥ 2) including moisture-sensitive one were synthesized by the reaction with organic halides in high yeilds under mild conditions.

From molecular to one-dimensional polychalcogenides: Preparation, structure, and reactivity of NaNbS6, the first ternary alkali metal niobium polychalcogenide exhibiting infinite anionic chains

A reactive sodium polysulfide melt provides the one-dimensional compound NaNbS6 at 350°C. It contains anionic chains of condensed NbS9 polyhedra that are separated by Na+ ions. NaNbS6 decomposes at about 400°C and transforms into the layered intercalation compound NaNbS2.

Synthesis and crystal structure of a new alkali metal tantalum sulfide: Na3TaS4

Needle-shaped, moisture sensitive, yellow crystals of Na3TaS4 were obtained by the reaction of Na2S3, Ta, and S at 450°C. The structure was determined by single crystal X-ray diffraction and refined to R1 and wR2 values of 0.0172 and 0.0381, respectively. Na3TaS4 crystallizes with 32 formula units in the orthorhombic space group Fdd2 (No.: 43) with a = 27.113(4), b = 28.326(6) and c = 7.918(1) A?. The structure consists of discrete tetrahedral TaS43- ions and Na+ ions.

Synthesis, crystal structure and optical absorptions of the two-dimensional sulfide NaCu2NbS4

The new quaternary compound NaCu2NbS4 was obtained as yellow platelets single crystals (0.5 x 0.14 x 0.04 mm) by reacting a mixture of Na2S3, Cu, Nb and S in a 4:1:1:8 ratio at 300°C. The crystal structure is characterized by two-dimensional [Cu2NbS4](1-) layers parallel to (010) which are isolated by Na cations. The Na(1+) is coordinated by nine S atoms within a distorted tricapped trigonal prism. The Na-S distances are extremely long compared to those in other sodium and sulfur containing compounds. As a consequence large anisotropic displacement components forthe Na cation are observed indicative for a statically disorder. Low te mperature X-ray investigations give no hints for an ordering of Na(1+). From optical investigations a band gap E(g) of 2.46 eV is estimated.

On the Autoxidation of Aqueous Sodium Polysulfide

Aqueous sodium polysulfide of composition in the range Na2S2.0 to Na2S4.6 undergoes autoxidation by eiher air or pure oxygen at temperatures of between 23 and 40 deg C according to the equation Na2S2+x + 3/2 O2 -> Na2S2O3 + x/8 S8.Iodometric determination, vibrational spectra and ion-pair chromatography showed that neither sulfate, sulfite nor polythionates are formed and that the sulfur precipitated consists of S8 (> 99percent). - Key words: Sodium Polysulfide, Autoxidation, Sodium Thiosulfate, Elemental Sulfur, HPLC

Non-ionic polyiodo sugar substituted anilines

Non-ionic polyiodo saccharidic ether substituted anilines are provided as contrast media, the ether being non-glycosidyl. The compounds have excellent physical properties in having acceptable water solubility or capable of stable suspension, relatively low osmotic pressure, good thermal stability, so as to be heat sterilizable, and a high iodine proportion. The compounds can be prepared from polynitroaromatics by substitution and reduction.