Carbon sulphide

In a 1 litre round-bottomed flask provided with an efficient double surface condenser, place 40 g. (39 ml.) of aniline, 50 g. (40 ml.) of carbon sulphide CAUTION inflammable) (1), and 50 g. (63-5 ml.) of absolute ethyl alcohol (2). Set up the apparatus in the fume cupboard or attach an absorption device to the top of the condenser (see Fig. 11, 8, 1) to absorb the hydrogen sulphide which is evolved. Heat upon an electrically-heated water bath or upon a steam bath for 8 hours or until the contents of the flask sohdify. When the reaction is complete, arrange the condenser for downward distillation (Fig. 11, 13, 3), and remove the excess of carbon disulphide and alcohol (CA UTION inflammable there must be no flame near the receiver). Shake the residue in the flask with excess of dilute hydrochloric acid (1 10) to remove any aniline present, filter at the pump, wash with water, and drain well. Dry in the steam oven. The yield of crude product, which is quite satisfactory for the preparation of phenyl iao-thiocyanute (Section IV.95), is 40-45 g. Recrystalhse the crude thiocarbanihde by dissolving it, under reflux, in boiling rectified spirit (filter through a hot water funnel if the solution is not clear), and add hot water until the solution just becomes cloudy and allow to cool. Pure sj/m.-diphenylthiourea separates in colourless needles, m.p, 154°,... 

Cobalt metal, oxides, carbonates, sulphides as powders It... 

Synonyms AI3-08935 BRN 1098293 Carbon bisulfide Carbon bisulphide Carbon disulphide Carbon sulfide Carbon sulphide Caswell No. 162 CCRIS 5570 Dithiocarbonic anhydride EINECS 200-843-6 EPA pesticide chemical code 016401 NCI-C04591 RCRA waste number P022 Sulphocarbonic anhydride UN 1131 Weeviltox. 

Mineralization is present mostly in strong K-silicate altered rocks dominated by K-feldspar, and in multi-generational stock works of quartz-carbonate-sulphide veins. Laterally extensive sericite-altered rocks are peripheral to and overprint the... 

Almost all rocks contain at least some iron. The more important minerals, in which Fe is a major constituent, are given with their Fe contents in Table 16.1. In all of these minerals except magnetite, iron is exclusively or predominantly in the bivalent state. During weathering, the iron is released from these minerals and secondary , pedogenic iron minerals are formed. The most important ones are Fe-contain-ing clay silicates and Fe oxides but under reducing conditions, Fe carbonates, sulphides and phosphates may also be formed. 

The solid residue contained potassium sulphate, carbonate, sulphide, and polysulphides. 

Solubility of Phosphorus in Carbon Sulphide. This experiment is prepared by one student who demonstrates it to the class. (TFor/c in a jume cupboard, extinguish all burners ) Pour 2-3 ml of carbon sulphide into a small porcelain bowl and lower a small piece of white phosphorus into it. What occurs Take a small sheet of filter paper with pincers, wet it with the solution of phosphorus in carbon sulphide, and see what happens. Test the solubility of red phosphorus in carbon sulphide. 

The solubility of nitroguanidine in organic solvents is limited. Desvergnes [31] determined its solubility in various solvents water, acetone, methyl and ethyl alcohols, ethyl acetate, ether, benzene, toluene, pyridine, chloroform, carbon tetrachloride and carbon sulphide. In all these liquids the solubility of nitroguanidine is negligible, the highest value—for pyridine—being 1.75 g/100 ml at 19°C. 

The various rocks and associated minerals show different degrees of resistance to chemical weathering and the order of resistance is carbonates, sulphides < silicates < oxides. 

Identification of gases Many anions (e.g. carbonate, sulphide, sulphite, thiosulphate, and hypochlorite) are usually identified by the volatile decomposition products obtained with the appropriate reagents. Suitable apparatuses for this purpose are shown in Fig. 11.30. The simplest form (a) consists of a semimicro test-tube with the accompanying filter tube a strip of test paper (or of filter paper moistened with the necessary reagent) about 3-4 mm wide is suspended in the filter tube . In those cases where spray is likely to affect the test paper, a loose plug of cotton wool should be placed at the narrow end of the filter tube . Apparatus b is employed when the test reagent is a liquid. A... 

Gas reactions may be performed in specially devised apparatus. Thus in testing for carbonates, sulphides, etc., it is required to absorb the gas liberated in a drop of water or reagent solution. The apparatus is shown in Fig. 11.53, and consists of a micro test-tube of about 1 ml capacity, which can be closed with a small ground glass stopper fused to a glass knob. The reagent and test solution or test solid are placed in the bottom of the tube, and a drop of the reagent for... 

SYNS CARBON BISULFIDE (DOT) CARBON BISULPHIDE CARBON DISULPHIDE CARBONE (SUFURE de) (FRENCH) O CARBONIO (SOLFURO di) (ITALIAN) CARBON SULFIDE CARBON SULPHIDE (DOT) DITHIOCARBONIC ANHYDRIDE KOHLENDISULFID (SCHWEFELKOHLENSTOFF) (GERMAN) KOOLSTOFDISULFIDE (ZWAVEL-KOOLSTOF) (DUTCH) NCI-C04591 RCRA WASTE NUMBER P022 SCHWEFELKOHLENSTOFF (GERMAN) SOLFURO di CARBONIO (ITALIAN) SULPHOCARBONIC ANHYDRIDE WEEVILTOX WEGLA DWUSIARCZEK (POUSH)... 

Jimmy Member (Manjeri Fm) Carbon sulphide -38 to -20 -14.9 to +16.7 most around 0 Sulphur mat including methanogens... 

Synonym(s) Carbon bisulphide carbon disulphide carbon sulfide carbon sulphide dithiocarbonic anhydride sulphocarbonic anhydride HSDB 1995... 

Fig. 1.22. Chromatograms of the products of chlorination of germanium ore with carbon tetrachloride. 1= Chlorine 2 = carbon dioxide 3 = phosgene 4 = carbon sulphide 5 = germanium tetrachloride 6 = carbon tetrachloride. From ref. 113.

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