Sodium diethyl dithiocarbamate

The FTIR reflection spectra of lead diethyl dithiocarbamate was reported to show the characteristic absorption bands 900, 981,1088,1138,1200,1248,1320,1351, 1398 and 1460 cm (Pouchert, 1970). The FTIR reflection spectra of sodium diethyl dithiocarbamate adsorption on jamesonite at pH = 7.0 are shown in Fig. 4.49. It can be seen that the characteristic absorption surface is lead diethyl dithiocarbamate. Further, the effect of pulp potential on the adsorption of diethyl dithiocarbamate on jamesonite was examined and the results are shown in Fig. 4.50. At pH = 4.7 the diethyl dithiocarbamate adsorption on jamesonite is mainly of lead diethyl dithiocarbamate independent of potential in the range of 485 - 680 mV due to the occurrence of almost the same lead diethyl dithiocarbamate characteristic band. However, the intensity of the IR signals changes at various potential values. It demonstrates the intensity of the IR signals of the characteristic peak lead diethyl... 

Samples of metal complexes isolated from the final solutions were subjected to microanalysis (for carbon, hydrogen, oxygen, and sulfur). Metals were determined colorimetrically by the following methods— copper as the complex formed with sodium diethyl dithiocarbamate (6) cobalt as the nitroso-R salt complex (7) nickel as the dimethylglyoxime complex (4). 

To a heavy-walled flask equipped with a nitrogen inlet side arm was added resin-bound terminal acetylene (684.4 mg resin, 0.274 mmol, 0.448 mequiv/g resin) and aryl iodide (120.6 mg, 0.3011 mmol) (Scheme 11). The flask was evacuated and back-filled with nitrogen a minimum of three times. The supernatant of a separate 0.2 M catalyst cocktail solution (previously prepared) was added via cannula (5 mL, 3.0 mmol) to the reaction flask. The flask was kept sealed at 65°C for 12 h and agitated periodically to remix polymer beads stuck on flask walls. The beads were then transferred to a fritted filter using methylene chloride and washed with methylene chloride (21 mL). Excess aryl iodide can be recovered from the first methylene chloride wash. All further washes were carried out in the ratio of 30 mL/g resin. The resin was washed sequentially with DMF, 0.05 M solution of sodium diethyl dithiocarbamate in 99 1 DMF-diisopropylethylamine,... 

Of the complexing reagents investigated, sodium diethyl dithiocarbamate proved on a number of counts to be the most effective. The bulk of experiments therefore used this compound. The nature of this complex between the reagent and trialkyl lead chloride was first characterized in the absence of sodium chloride in the aqueous phase. 

Table I. Analysis of Complex of Triethyl Lead Chloride and Sodium Diethyl Dithiocarbamate...

Characterization of the complexing reaction was then conducted in the presence of 0.83 m sodium chloride in the aqueous phase over a temperature range 15°-60°C. In addition, removal of Hs PbCl as a function of the re-agent-to-organic lead ratio Cr/Cl in the presence of 5 wt % NaCl was examined at 30° C using in turn three other dithiocarbamate reagents besides that of sodium diethyl dithiocarbamate. 

The formation of chloroimino ligands has been proposed solely on weak v(C=N) vibrations in the 1600-1750 cm-1 IR region. A repeat of the vanadium reaction by other workers (109) found the product of their reaction to be VC13(CNBu )3, so some caution should be applied to the formulation of the proposed vanadium dimer at least. Substitution reactions on these compounds with a series of mono- and bidentate tertiary phosphorus ligands and metathetical replacements with lithium quinolin-8-olate and sodium diethyl dithiocarbamate have given a range of neutral and cationic products (204, 483). 

An extraction method that uses an ultrasonic probe has been developed [97]. The sugar is mixed with water and is ultrasonicated for a period of time to ensure thorough solution. Then the pH is adjusted to 9, and aqueous sodium diethyl dithiocarbamate is added. Then the solution is extracted twice with chloroform. The extract is evaporated and the residue taken up in dilute acid for analysis by AAS. 

Cleave the Aloe groups (see Notes 6, 7) Add the resin to 1 g (PPh3)4Pd in 10 mL chloroform acetic aciddV-methyl morpholine (37 2 1, v/v/v) and shake for 5 h. Wash the resin 2x with 25 mL 0.5% diisopropyl ethyl amine in DMF, 2x with 25 mL of 0.5% sodium diethyl dithiocarbamate in DMF, and 2x with 25 mL DMF alone. Special reagents needed tetrakis triphenylphosphine palladium diethyl dithiocarbamate. 

A mixture of 10 g of sodium diethyl dithiocarbamate trihydrate dissolved in 100 ml of toluene was dried using a Dean- tark trap and then concentrated, and anhydrous dithiocarbamate was isolated. The anhydrous dithiocarbamate (0.039 mol) was then added to a solution of the Step 2 product (0.037 mol) dissolved in 130 ml of acetonitrile, and the mixture was stirred 2 hours at ambient temperature. The mixture was then filtered and the filtrate concentrated. The residue was distilled, and the product was isolated in 74% yield as a yellow-green oil, BP=170-180°C at 0.25 mmHg. 

SYNS CUPRAL DDC DEDC DEDK DIETHYLCARBAMODITHIOIC ACID, SODIUM SALT DIETHYLDITHIOCARBAMATE SODIUM DIETHYL-DITHIOCARBAMIC ACID SODIUM DIETHYD DITHIOCARBAMIC ACID, SODIUM SALT DIETHYL SODIUM DITHIOCARBAMATE DITHIOCARB DITHIOCARBAMATE NCI-C02835 SODIUM DEDT SODIUM NJ4-DIETHYLDITHIOCARBAMATE SODIUM SALT of N,N-DIETHYLDITHIOCARBAMIC ACID THIOCARB USAF EK-2596... 

Technique HG = hydride generation AAS = atomic absorption spectrometry GF = graphite furnace AES = atomic emission spectrometry MS = mass spectrometry AFS = atomic fluorescence spectrometry ASV = anodic stripping voltammetry SDDC = sodium diethyl dithiocarbamate. Procedures ISO = Memational Standards Organization ISO/CD = ISO Committee Draft SM = Standard Methods ... 

Aluminum is extracted from sea water into chloroform after complexation with pyrocatechol violet and the formation of an ion associate of the aluminum complex with zephiramine (tetradecyldimethylbenzylammonium chloride). With 5 ml of chloroform as much as 94.7% of the aluminum was separated from 110 ml of sea water, i.e. a 20-fold aluminum concentration could easily be achieved. Several ions, such as manganese, iron(II), iron(III), cobalt, nickel, copper, zinc, cadmium, lead, and uranyl also react with pyrocatechol violet and to some extent are extracted together with aluminum. However, the interferences of these ions and other metal ions present in sea water could be eliminated by masking with sodium diethyl-dithiocarbamate and 8-hydroxyquinaldine. In presence of these agents all the above metal ions except aluminum were extracted into chloroform51). 

Accelerators used include hexamine, diphenyl guanidine, ethylidene aniline, mercapto-benzothiazole, dibenzothiazole disulfide, N-Cyclohexyl benzothiazole sulfenamide, sodium diethyl dithiocarbamate, tetramethylthiuram disulfide, tetraethyl thiuram disulfide, dipentamethylene thiuram tetrasulfide, sodium isopropyl xanthate, zinc butyl,... 

Sunderman FW (1979) Efficacy of sodium diethyl-dithiocarbamate (Dithiocarb) in acute nickel carbonyl poisoning. Ann Clin Lab Sd 9 1 — 10. 

Spectrophotometric analysis using sodium diethyl dithiocarbamate in cases where no AAS facilities are available. 

Spectrophotometer or photometer, 435 nm Cuvettes, path length 1 - 5 cm Water, deionized and copper-free Sodium diethyl dithiocarbamate solution ... 

DMF (5 X twice resin bed volume) followed by 0.5 % sodium diethyl-dithiocarbamate in DMF (5 x twice resin bed volume). 

Sodium diethyl dithiocarbamates (DDTC) is firstly used as analytical reagent. It is able to react with various metal ions to form metal complex compound. The extraction properties of various metal complex compounds with organic solvents are given as follows ... 

It can be seen that the concentrate grade becomes higher when sodium diethyl dithiocarbamate is used as collector. The reason is that sodium diethyl dithiocar-bamate has good selectivity toward pyrite. 

Comparison of sodium diethyl dithiocarbamate and xanthate in the flotation of Pb-Zn ore is given by the following ... 

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