DITHIOPHOSPHATE(DTP)

 Sodium di-N-Butyl Dithiophosphate

Sodium Diisopropyl Dithiophosphate

Sodium Diethyl Dithiophosphate

Sodium Diisobutyl Dithiophosphate

Sodium Diisoamyl Dithiophosphate

Sodium Di Sec-butyl Dithiophosphate

  Sodium Dicresylic Dithiophosphate

 Sodium ethyl sec butyl Dithiophosphate

Dicresyl Dithiophosphoric acid

Ammonium Dibutyl Dithiophosphate

     Dithiophosphate 31

   Ammonium salt of dicresyl dithiophosphoric acid

     Ammonium salt of DTP-31

Zinc Dialkyl Dithiophosphate(ZDDP)

Application: Dithiophosphates(DTP) are, like xanthate, generally used in the flotation of sulphide ores or sulphidized oxide minerals. In combination with xanthate, DTP can provide remarkable advantage in grade and recovery of the concentrates.

As with xanthate, increasing chain length of the radical R will increase the activity of the aliphatic DTP whilst decreasing selectivity. An advantage of DTP in comparison to xanthates is their application in acid pH ranges. Their stability is much higher, particularly in the region of pH 4. In the flotation of noble metals the shorter-chained compounds are preferred. These are generally more selective than xanthates in preventing the flotation of iron sulphides. For the flotation of free gold the short chained ethyl, isopropyl or even secondary butyl DTP may be used alone or in combination with each other.

One additional application for Aliphatic DTP is the used in the precipitation of cadmium from hot concentrated phosphoric acid solutions.

The aromatic DTP are preferably applied in the flotation of lead minerals, which often contain silver. The liquid products are generally available as 50% active products however, some can be offered as 70% active formulations.

DTP do not develop a lot of froth, and require the use of a conventional frother.