With options available globally for use in biofouling control, anaerobic microbial control, and fluid preservation, the comprehensive AQUCAR™ Water Treatment Microbiocides portfolio includes key chemistries (link to chemistries) such as glutaraldehyde, glut/quat blends, DBNPA, bronopol, OPP and dimethyl-oxazolidine.

AQUCAR™ A 78 Water Treatment Microbiocide

AQUCAR™ A 78 Water Treatment Microbiocide is a broad-spectrum bactericide based on oxazolidine (4,4-dimethyl-oxazolidine) chemistry. The product is a cost effective antimicrobial that offers both performance and stability in alkaline systems and products for use in oil and gas production, and mineral slurries. AQUCAR A 78 helps prevent bacterial degradation in these systems which often result in gas production, off-odors, changes in color and loss of viscosity and film forming properties. Its active component is both water and oil-soluble. AQUCAR A 78 does not contain any metallic or halogenated compounds, or any organic derivatives of sulfur, boron, or phosphorus.

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Used In:

  • Oilfield water systems such as subsurface injection water
  • Oil drilling muds and fluids
  • Mineral slurries


  •  Antibacterial activity against a broad spectrum of bacteria in a variety of applications
  •  Effective over a pH range of 7-11
  •  Effective against sulfate-reducing bacteria
  •  Low freezing point and excellent thermal and alkaline stability
  •  Compatible with ionic additives and a variety of other formulation raw materials

Typical Properties

Footnote:   Please Note That Not All Products Are Registered In All Regions For All Applications. Please Contact Your Local Dow Representative For Detailed Technical Information Applicable To Your Individual Situation.; Use Biocides Safely. Always Read The Label And Product Information Before Use.


  • North America