Di- sulphide

TBBS A/-t-ButyIbenzothiazole-2-su(phenamide MBTS Dibenzothiazole di.sulphide MBT 2-Mercaptobenzothiazole TMTD Telrainethythiutam disulphide... 

This property can be improved by the addition of antiozonants. Finer fillers give better flexing characteristics. Low sulphur or sulphurless cures, though good for heat ageing, are very bad for increasing flex life. Polysulphide links are preferred to mono or di-sulphide cross links. 

Differences between the heats of formation of titanium halide complexes with aliphatic mono- and di-sulphides (n-C3H7) TiX4 (x = 1 or 2 X = Cl or Br) and Bu S(CH2)3SBunTiBr4, in aliphatic and aromatic solvents have been attributed to weak molecular complex formation between the titanium sulphide adduct and the aromatic molecule.178 Variations in the donor ability of the aromatic solvent did not produce any corresponding variation in AH. ... 

A mixture of carbon di-sulphide and hyponitric acid is a powerful explosive, which is exploded by fulminate of mercury or gunpowder. It does not explode by a shock alone, nor by heating to 398° F. A mixture of equal parts of hyponitric acid and carbon di-sulphide gives the most powerful explosion. 

The tetra-alkyldiarsines combine directly with halogens, sulphur and alkyl iodides. In the case of sulphur, both mono- and di-sulphides are formed. In the case of tetramethyldiarsine, methyl chloride produces dimethylchloroarsine, but methyl bromide gives tetramethylarsonimn bromide and trimethylarsine dibromide. The following scheme suggests the course of the reaction with methyl bromide ... 

This is the only tetra-halogen substitution product of methane which will be mentioned. It is produced when methane is chlorinated to its limit. It may also be made by further chlorination of chloroform. The reaction by which it is made industrially is, however, entirely different. It consists in chlorinating carbon di-sulphide in the presence of a carrier such as iodine. In this reaction, which probably takes place in several steps, the two sulphur atoms, in the carbon di-sulphide, are replaced by four chlorine atoms. 

Viscose Silk.—III. From Cellulose Xanthate. We have referred to the solvent action of xanthic acid, which is the ethyl ether of di-thio-carbonic acid, viz., HS-CS-OC2H5. When sodium cellulose is dissolved in xanthic acid the cellulose is in the form of sodium cellulose xanthate. A solution properly prepared by treating cellulose with sodimn hydroxide and carbon di-sulphide in the presence of benzene or carbon tetra-chloride, in which polymerization of the cellulose compound is effected, is decomposed by forcing capillary streams of the solution into a solution of ammonium sulphate. The cellulose is thus obtained as in the other processes in the form of fine filaments of a hydrated cellulose possessing silk-like properties. Artificial silk of this type is known as viscose silk and is made in large quantities. In 1914 about 20,000,000 pounds of artificial silk were made, of which about 3,000,000 pounds were made in the United States. Most of this product was viscose silk. 

Thio-alcohol (mercaptan) Carbon di-sulphide Thionyl chloride Ammonium thio-cyanate Thio-urea... 

Carbon di.sulphide, CSg, is a volatile liquid (b.p. 46°), highly refractive, insoluble in water but soluble in ethyl alcohol and ether. It is made by the action of sulphur vapour on electrically heated coke. Its main uses are as a solvent and in the manufacture of CCI4 (p. 290), thiocarbanilide and viscose rayon ... 

Interestingly, a s)mthetic derivative with the same three-dimensional shape as (o-agatoxins but without di-sulphide bonds is also able to raise antibodies to the native toxin. Recent work has shovm that there are three arginine residues which are "conserved",... 

The 1-thio-D-glucitol derivative (9) has been obtained in three steps from 2,3,4,6-tetra-Q-benzyl-D-glucose by way of the tosylate (8). Mono- and di-sulphide bridged dimers (10) and (11)... 

D-Glucose has been converted to 1-thio-D-glucitol derivatives, including mono- and di-sulphide dimers.Stannic chloride reduction of the arabinoside benzyl ether (21) yielded the glyceryl-heterocycle (22)(Scheme 8) the paper discusses the mechanism of the reaction involved in detail.Nitroheptenitol derivatives undergo... 

Miscellaneous Compounds.- 1,2-0-Isopropylidene-5-0-tosyl-w-D-xylofuranose has been used to prepare 1- and 5-deoxy-xylitol di-sulphide and sulphide derivatives in standard steps. Base treatment of cis,trans-l,2 5,6-di-0-(2-bromoethylidene)-D-mannitol and the corresponding cis,cis isomer gave the polycyclic derivatives... 

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