Oil Dispersion (OD)

For an OD formulation, the pesticide is suspended in a water-insoluble organic solvent. Together with emulsifying agents, the solution will form a dispersion when mixed with water.

For a long-term stable formulation, the active must be oil in-soluble and thermodynamically stable to avoid recrystallization. The employed adjuvants can also enhance the biological efficacy.

Key-factors:

  • Pesticide must be insoluble in water immiscible solvent
  • Actives with high melting point
  • Crystal formation and sedimentation have to be suppressed

General recipe

OD ingredients wt%
Active ingredient 4-20
Non-aqueous dispersing agents 5-10
Emulsifier 5-10
Organophilic anti-settling agent 2-3
Mineral or vegetable oil To 100

Products


Emulsifiers

Trade name Chemistry Property EPA
LUCRAMUL® L 05 Alkyl ethoxylate Nonionic emulsifier
LUCRAMUL® L 10 Alkyl ethoxylate Nonionic emulsifier
LUCRAMUL® 2304 Alkyl ethoxylate Nonionic emulsifier
LUCRAMUL® 2310 Alkyl ethoxylate Nonionic emulsifier
LUCRAMUL® C 13/5 Branched alkyl ethoxylate Nonionic emulsifier
LUCRAMUL® 1820 Alkyl ethoxylate Nonionic emulsifier
LUCRAMUL® 1819 DB Oleyl ethoxylate Nonionic emulsifier
LUCRAMUL® CO 8 Castor oil ethoxylate Nonionic emulsifier
LUCRAMUL® CO 11 Castor oil ethoxylate Nonionic emulsifier
LUCRAMUL® CO 30 Castor oil ethoxylate Nonionic emulsifier
LUCRAMUL® COH 16 Hydrated castor oil ethoxylate Nonionic emulsifier
LUCRAMUL® SO 21 Soy oil ethoxylate Nonionic emulsifier
LUCRAMUL® DSP 03 Distyrylphenyl ethoxylate Nonionic emulsifier
LUCRAMUL® PS 10 TSP ethoxylate Nonionic emulsifier
LUCRAMUL® PS 16 TSP ethoxylate Nonionic emulsifier
LUCRAMUL® PS 29 TSP ethoxylate Nonionic emulsifier
LUCRAMUL® PS 54 TSP ethoxylate Nonionic emulsifier
LUCRAMUL® SPS 16 TSP ethoxylate ether sulfate ammonium salt Anionic surfactant
LUCRAMUL® SPS 29 TSP ethoxylate ether sulfate ammonium salt Anionic surfactant

TSP = Tristyrylphenol