Propyl xanthate

Iso xanthates have two methyl groups linked to the carbon atom of the -CH in isopropyl xanthate, hence the performance of iso-propyl xanthate is better than that of normal one. 

Tessenderlo Kerley Wego Chem. Min. http //www. wegochem. com Trade Name Synonyms Sufloat Sodium Iso Propyl Xanthate [Suyog http //www.suyogchemicais. com]... 

Sodium isopropyl xanthate Sufloat Sodium Iso Propyl Xanthate... 

Sodium isopropyl xanthate Sufloat Sodium Iso Propyl Xanthate 205-444-0 Dimethylol urea Protectol DMU 205-447-7 Ferrous fumarate 205-448-2 Bernel Ester 284 Dioctyl fumarate 205-450-3 DIBA... 

Alkyl xanthates that are currendy used in flotation industry mainly include ethyl xanthate and propyl xanthate in China. But propyl xanthate and i-butyl xanthate are employed mostly in other countries. The main reason lies in that is propyl xanthate and j-butyl xanthate have the advantage of low price and broad source. 

Concentration (X 10 mol/L) Ethyl xanthate Propyl xanthate Butyl xanthate... 

When exposed to ait, the sodium salts tend to take up moisture and form dihydrates. The alkah metal xanthates are soluble ia water, alcohols, the lower ketones, pyridine, and acetonitrile. They are not particularly soluble ia nonpolar solvents, eg, ether or ligroin. The solubiUties of a number of these salts are Hsted ia Table 4. Potassium isopropyl xanthate is soluble ia acetone to ca 6 wt %, whereas the corresponding methyl, ethyl, / -propyl, n-huty isobutyl, isoamyl, and benzyl [2720-79-8] xanthates are soluble to more than 10 wt % (12). The solubiUties of the commercially available xanthates ia water are plotted versus temperature ia Figure 1 (14). 

Potassium 0-(2-propyl) dithiocarbonate can be prepared in the following manner With heating, 42 g (0.75 mol) of potassium hydroxide is dissolved in 400 mL of 2-propanol. The solution is then cooled in an ice bath, and the temperature is kept below 10°C while carbon disulfide (46 mL, 0.75 mol) is added dropwise with stirring. The potassium xanthate is collected by suction filtration and washed with four, 100-mL portions of ether and dried under reduced pressure at ambient temperature yield 111 g (85%). 

With butyl xanthate (1.0 x 10" mol/L) as a collector and 2,3-dihydroxyl propyl dithiocarbonic sodium (GX2) as a depressant, the flotation recovery of marmatite, arsenopyrite and pyrrhotite is given in Fig. 5.21 as a function of pH. 

At pH = 6, the flotation recovery of marmatite, arsenopyrite and pyrrhotite as a function of depressant dosage GX2 is given in Fig. 5.22. With the increase of GX2 dosage, the flotation recovery of these three minerals decreases. However, marmatite remains with reasonably high flotation recovery of above 70%, and arsenopyrite and pyrrhotite exhibit poor flotation with recovery of below 35% when the concentration of GX2 is above 120 mg/L. It indicates the possibility for flotation separation of marmatite from arsenopyrite and pyrrhotite by using 2,3-dihydroxyl propyl dithiocarbonic sodium as a depressant and butyl xanthate as a collector. 

The influence of pulp potential on the flotation of marmatite, arsenopyrite and pyrrhotite with 10 mol/L butyl xanthate as a collector in the presence of 150 mg/L 2,3-dihydroxyl propyl dithiocarbonic sodium (GX2) has been tested. Taking the flotation recovery to be 50% as a criterion, above which the mineral is considered to be floatable and otherwise not floatable, the upper and lower potential limits of the flotation of marmatite, arsenopyrite and pyrrhotite at different pH are presented in Fig. 5.25 and Table 5.1. It is evident that marmatite is floatable in some range of potential at various pH, whereas arsenopyrite and pyrrhotite are not floatable in the corresponding conditions. It suggests that the flotation separation of marmatite from arsenopyrite and pyrrhotite may be... 

The influence of copper ion on the flotation of zinc-iron sulphide minerals in the presence of depressant with butyl xanthate l.Ox 10 mol/L as a collector is presented in Fig. 6.11 to Fig. 6.14. It can be seen from Fig. 6.11 and Fig. 6.12 that in the presence of 120 mg/L 2-hydroxyl ethyl dithio carbonic sodium (GXl) and 2,3 dihydroxyl propyl dithio carbonic sodium (GX2), marmatite is activated by copper ion and exhibits very good flotation with a recovery above 90% in the pH range of 4-8. The flotation of arsenopyrite and pyrrhotite is poor with a... 

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Phenoxyacetic Acid 122-59-8 Potassium Amyl Xanthate 2720-73-2 Propyl Ether 111-43-3... 

Fig. 5.6. The performance of xanthate and fatty acids with various chains for galena flotation 1—methyl 2—ethyl 3—propyl 4—butyl 5—amyl.

Propyl Zithate . [R.T. Vandorbflt] Zinc isopropyl xanthate acceleraior. 

The perfomance of xanthate with aliphatic unsaturated hydrocarbon is close to that of normal alkyl xanthate. It was reported that those aliphatic xanthates include propylene-propyl and propylene-butyl xanthates [2],... 

The performance of phenmethyl xanthate is equal to those of propyl and butyl xanthates. Cinnamyl xanthate is prepared from cinnamyl alcohol. According to the results of laboratory tests, the synthesis conditions of cinnamyl xanthate with partial water dilution method are as follows ... 

The same group of workers also accounted for the thermal rearrangement reaction of di(ethylthio)propyl S-methyl xanthates and the rearrangement of 0,S-dialkyl dithiocarbonates that occurs under Friedel-Crafts reaction conditions. A new, general synthesis of l,3-dithiol-2-ones (451) is based on the acid-catalysed ring-closure reaction of the dithiocarbonates (452). The rearrangements of 2-aminoethyl alkyl trithiocarbonates (453) and alkylthio-thiocarbonyl thiocyanates (433) into dithiocarbonates (454) and alkylthio-thiocarbonyl isothiocyanates (455), respectively, have been described recently. 

Good control over the polymerization of LAMs requires use of a less active RAFT agent such as a dithiocarbamate (Z = NR 2) or a xanthates (Z=OR ) with R = alkyl or aryl. The more active RAFT agents Z = R (dithioesters) or SR (trithiocarbonates) strongly retard or inhibit polymerization of LAMs. The choice of the R group is also critical. Inhibition periods due to slow reinitiation are expected for RAFT agents such as 37 (R = 2-cyano-2-propyl) and 38 (R = benzyl). 

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