Quaternary Ammonium Compounds

Quaternary Ammonium Compounds (QAC), which have a reputation for their efficacy, can be used as a general biocide and algaecide. These products help to control bacteria, algae and fungi slimes and macro-fouling in water systems.

Lonza Water Treatment offers a wide range of QAC technologies that can be used in many applications, including industrial, commercial, municipal and surface water treatment applications, either as products or as part of formulations.

barquat 4250Z
Barquat™ 4250Z

The Barquat™ 4250Z product is a blend of alkyl dimethyl benzyl ammonium chlorides and alkyl dimethyl ethylbenzyl ammonium chlorides. It can be used as an active ingredient in various formulations to control microbial growth. This quaternary ammonium compound delivers potent germicidal action, even in heavy organic soil loads.

  • Used in water treatment formulations and provides an effective biocidal action
  • A broad-spectrum product that aids in controlling microbial organisms, such as bacteria, fungi, viruses and algae
  • Acts as a molluscicide in recirculating or once-through cooling water systems
  • Soluble in water and in many alcohols, ketones and glycols
  • To be dosed via metering pumps
  • Product packaging size: available in canisters and drums
Barquat PQ2
Barquat™ PQ

The Barquat™ PQ product is a non-foaming cationic polymeric quaternary ammonium algaecide. This product acts as dispersant agent and aids in water clarification as it assists in the coagulation of small particles. 

The Barquat™ PQ product, which has a 60% concentration in polyquat, shows a high degree of efficacy against algae when compared to other algaecides. However, for optimal control in cooling water, Lonza recommends a supplementary oxidizer such as our Dantobrom® RW products.

At recommended use concentrations the Barquat™ PQ product is compatible with cationic and non-ionic surfactants.

Additional advantages:

  • Effective against planktonic and sessile algae
  • Provides water clarification and biodispersion
  • Helps to reduce unpleasant odours
  • Helps to reduce halogen demand and filter clogging
  • Stable in hard water and over a broad pH and temperature range
  • Non foaming and simple-to-use and formulate
  • Synergy with halogens
  • Test kit available therefore easy to monitor
  • Product packaging size: available in drums or IBC’s
Barquat MB80
Barquat™ MB50

When used as an active ingredient in water treatment formulations, this product has been found to provide effective biocidal action against a broad spectrum of microbial organisms such as bacteria, fungi, viruses and algae.  This “first” generation quaternary ammonium compound delivers potent germicidal action in cooling water applications. The Barquat™ MB50 product is a blend of Alkyl Dimethyl Benzyl Ammonium Chlorides. 

Product packaging size: available in drums or IBC’s

Bardac® LF1850-WT
Bardac™ LF80

The Bardac™ LF80 product is a low-foaming Didecyldimethylammoniumchlorides (DDAC) with a broad-spectrum biocidal activity against both gram-positive and gram-negative organisms. This product is an excellent algaecide at economical concentrations.

This product has applications for use in the food and dairy industry, swimming pools and cooling towers as well as in the paper industry. It also shows synergistic effects when used in combination with aldehydes and complexing agents like EDTA.

Product packaging sizes: available in drums and IBC’s

JAQ™ Powdered Quat
JAQ™ Powdered Quat

An alkyl dimethyl benzyl quaternary ammonium compound having an effective performance in a variety of applications. When used as an active ingredient in water treatment, such as recreational water treatment applications, this product has been found to have a broad spectrum of biocidal activity, in particular on algae.

  • EPA registered
  • Soluble in water and in many alcohols, ketones and glycols
  • Incorporated into various Lonza EPA registered formulations
  • To be slug dosed following a schedule
  • Product packaging size: 45kg buckets