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™ PS 75 Water Treatment Microbiocide

AQUCAR™ PS 75 Water Treatment Microbiocide is a broad-spectrum biocide developed to inhibit the growth of algae, bacteria, yeasts and fungi in process waters used in various industrial applications. AQUCAR PS 75 is effective in both acid and alkaline environments. It is especially effective against sulfate-reducing bacteria (SRB) which are particularly troublesome in enhanced oil recovery operations, such as injection water treatment, top-side systems, pipeline protection and storage. AQUCAR PS 75 is a 76.5% w/w aqueous solution of tetrakis(hydroxymethyl) phosphonium sulfate.

Document Links:

Used In:

  • Enhanced oil recovery systems
  • Injection water/waterfloods
  • Oil and gas pipelines
  • Drilling muds, packer fluids, completion and workover fluids
  • Well remediation operations
  • Hydrotesting
  • Pipeline pigging and scraping operation
  • Water treatment applications such as industrial cooling water, paper and paperboard manufacturing


  •  Inhibits microbial growth in enhanced oil recovery systems, industrial recirculating cooling waters and non-food-contact paper manufacturing
  •  Broad-spectrum protection against a range of bacteria, especially sulfate-reducing bacteria (SRB) and algae (blue-green, green and other types such as yellow-green, brown and mustard algae)
  •  Miscible in all proportions with every type of water, including seawater
  •  Is readily deactivated under controlled conditions
  •  No organic solvents / aqueous formulation
  •  Outstanding chemical stability and good compatibility with most water treatment chemicals

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.


  • Asia Pacific
  • Europe
  • Latin America
  • North America