Oil dispersion (OD)

Oil dispersion (OD) formulations typically contain active ingredient(s) between 4.0 - 20.0 wt.%. In this formulation, the active ingredient(s) is suspended in a water-insoluble organic solvent. When mixed with water the active ingredient particles are dispersed in water and the organic solvent is emulsified due to the added emulsifying agents.

To ensure a long-term stability, the active ingredient(s) has to be stably dispersed in the water-immiscible solvent, preventing recrystallization or cake formation. The incorporation of adjuvants may further enhance the biological efficacy of the formulation.

The formulation is intended for dilution with water before application (spray mixture).

Key-factors:

  • Active ingredient(s) must be insoluble in water-insoluble solvent.
  • Active ingredient(s) with high melting point.
  • Crystal formation and sedimentation have to be suppressed.

General recipe

OD ingredients wt%
Active ingredient 4.0 - 20.0
Non-aqueous dispersing agents 5.0 - 10.0
Emulsifier 5.0 - 10.0
Organophilic rheological modifier/anti-settling agent 2.0 - 3.0
Mineral or vegetable oil up to 100

Products


Emulsifiers

Trade name Chemistry Property EPA
LUCRAMUL® L 03 Alkyl ethoxylate Nonionic emulsifier
LUCRAMUL® L 05 Alkyl ethoxylate Nonionic emulsifier
LUCRAMUL® 1819 DB Oleyl ethoxylate Nonionic emulsifier
LUCRAMUL® CO 08 Castor oil ethoxylate Nonionic emulsifier
LUCRAMUL® CO 30 Castor oil ethoxylate Nonionic emulsifier
LUCRAMUL® CO 35 A Castor oil ethoxylate Nonionic emulsifier
LUCRAMUL® SO 21 Soybean oil ethoxylate Nonionic emulsifier
LUCRAMUL® SMO 20 Sorbitan monooleate ethoxylate Nonionic emulsifier
LUCRAMUL® SML 20 Sorbitan monolaurate ethoxylate Nonionic emulsifier
LUCRAMUL® STO 20 Sorbitan trioleate ethoxylate Nonionic emulsifier
LUCRAMUL® ADD 01 Modified vegetable oil ethoxylate Nonionic emulsifier
LUCRAMUL® OSE 01 Modified vegetable oil ethoxylate Nonionic emulsifier
LUCRAMUL® OSE 04 Emulsifier blend Matched pair
LUCRAMUL® DBA B Calcium dodecyl benzene sulfonate in n-butanol Anionic emulsifier
LUCRAMUL® DBEH 57% Calcium dodecyl benzene sulfonate in 2-ethylhexanol Anionic emulsifier
LUCRAMUL® DBEH 61% Calcium dodecyl benzene sulfonate in 2-ethylhexanol Anionic emulsifier

EPA can be submitted on request


Adjuvant

Trade name Chemistry Property EPA
LUCRAMUL® AG 101 Alkyl alkoxylate Ultra-fast spreading, penetrating
LUCRAMUL® AG 103 Alkyl alkoxylate Spreading, penetrating
LUCRAMUL® AG 131 90% Alkyl alkoxylate Spreading, penetrating
LUCRAMUL® SIL 04 Precipitated amorphous silica Anti-settling agent

EPA can be submitted on request