Preventol® P 30

• Liquid formulation of 2-bromo-2-nitropropane-1,3-diol (Bronopol).
• For use as a slimicide in paper machine circuits (wet-end).
• Effective against a broad spectrum of bacteria, including sulfate-reducing, anaerobic types.
• For the preservation of raw materials and auxiliaries for paper and paperboard manufacturing.
• For water treatment in cooling circuits.
• For the preservation of aqueous cleaners, surfactant solutions, polymer dispersions, synthetic adhesives, dampening solutions, pigment slurries and other water-based chemical-technical preparations.

Preventol® P 30 is a VOC-free preservative based on the antimicrobial active ingredient Bronopol. It shows good efficacy against both gram-positive and gram-negative bacteria, including sulfate-reducing, anaerobic types. Its efficacy against mold and yeast is less pronounced and in some cases is attained at high concentrations only. Preventol® P 30 is a colorless to light orange solution of Bronopol in polyethylene glycol and water. Because of its good water solubility Preventol® P 30 can be easily processed. Preventol® P 30 can be added at various stages of the production process but is ideally incorporated into the mixing water, if temperature and pH allow for it (see stability range below). Preventol® P 30 is compatible with most formulation components (raw materials, additives). However, the presence of strong nucleophiles such as sulfurous compounds (hydrogen sulfite, mercaptans, etc.) or primary amines can cause ineffectiveness. To obtain reliable and reproducible results, homogeneous distribution in the materials to be protected must be ensured by taking suitable measures in production (stirring, agitating, etc.). As with any product, use of the products mentioned in this publication in a given application must be tested (including field testing, etc.) by the user in advance to determine suitability.
Stability range
Preventol® P 30 is best used in acidic to weakly alkaline environments. The use of Preventol® P 30 at higher alkalinity (pH > 8.5 - 9.0), especially if exposed for longer periods of time, may lead to accelerated degradation of the active ingredient. Degradation of Bronopol may also be accelerated at temperatures exceeding 140 °F / 60 °C, therefore Preventol ® P 30 should be added at later stages of the production process when lower temperatures apply. As with any product, use of the products mentioned in this publication in a given application must be tested (including field testing, etc.) by the user in advance to determine suitability.

Directions for use
It is a violation of federal law to use this product in a manner inconsistent with its labeling. The following guidance is given as an approximation for each use pattern, but field-testing is recommended to achieve optimum effectiveness.
General use directions
To control the growth of slime-forming, spoilage, odor-causing and corrosion inducing bacteria and algae in industrial applications, Preventol ® P 30 can be dosed directly, or by preparing a stock solution immediately prior to application, either by open pouring (not cooling water treatment) or by metered pump. For process application treatments Preventol ® P 30 may be slug dosed initially when the system is not noticeably fouled and reduced to a maintenance dose once microbial control is evident. For some applications treatment may be by slug dose or by maintenance dose only. More frequent and higher dosing should be used when contamination is heavy. The recommended dosing regimes (slug/maintenance dose) and the dose rates are as indicated in the individual use area instructions. For preservation during the manufacture, distribution, storage and use of industrial, consumer, household and institutional products Preventol ® P 30 is best added at any liquid phase as late as possible during the manufacturing process. It may be added by pre-dissolving in any water to be incorporated into the formulation. Add after any heating stage, or when the product has been cooled below 40 °C. Ensure good mixing and even distribution throughout the product. Do not apply this product in anyway that will contact workers or other persons.
Water-based printing inks and fountain solutions
During the use of fountain solutions, shock dose Preventol® P 30 at 167 to 333 ppm (1.4 lb to 2.8 lb/1000 gallons) depending on the contamination. Apply once weekly in the fount reservoir as a normal routine or more frequently, if required.
For In-Can preservation dose Preventol® P 30 at 333 to 1667 ppm based on the final formulation volume (2.8 lb to 14 lb/1000 gallons).
Metal working fluids
For use in soluble oils, semi-synthetic and synthetic fluids. Add directly to the sump (with agitation) and allow to circulate for about one hour before shutdown. Preventol ® P 30 may be incorporated in the metalworking fluid concentrate by the manufacturer who should ensure that any incompatibility will not affect the efficacy. In diluted fluids add 333 to 3333 ppm of Preventol® P 30 (3.3 lb of Preventol® P 30 in 1000 lb will give a dose level of 1000 ppm).

Absorbent clays, corn cobs, and ground wood
For preservation, impregnate absorbent clays, corn cobs, or ground wood with Preventol ® P 30 to inhibit the growth of odor causing bacteria by spraying or pouring solution of 83 to 667 ppm (0.13 to 1.06 oz av. per 100 pounds of absorbent material).

Paints and other emulsion systems
For the preservation of acrylic, styrene-acrylic, polyvinyl acetate and other latex emulsions, latex emulsion based paints, photographic emulsions, silicone and other antifoam emulsion systems. Add Preventol ® P 30 at 333 to 1667 ppm based upon the final formulation volume (2.8 lb to 14 lb/1000
gallons).

Chemical toilet deodorants
To inhibit the growth of odor-causing bacteria in toilets, chemical deodorant concentrates should incorporate Preventol ® P 30 at levels of 3.3 to 93 % depending upon the desired concentration level. To effectively control odor in a portable toilet, a level of 333 to 1667 ppm of Preventol ® P 30 is recommended.

General preservation
For the preservation of industrial products such as adhesives, starch, pigments, mineral slurries, paint and emulsion systems such as acrylic, styrene acrylic, and polyvinyl acetate, other latex emulsions, latex emulsion based paints, photographic emulsions, silicone and other antifoam emulsion systems. Consumer, household and institutional products such as dishwashing liquids, surface cleaners and polishes. Surfactants and raw materials for the manufacture of industrial and consumer products, also industrial water additive formulations for use in processes such as cooling water, process water, boiler water and waste water products. For general preservation applications, Preventol ® P 30 should be dosed at 333 to 1667 ppm based on the final formulation volume (333 to 1667 g/cubic meter or 2.8 lb to 14 lb/1000 gallons) For difficult to preserve formulation such as adhesives and those containing naturally derived ingredients, doses up to 3333 ppm (0.3 lb per 100 lb total formulation weight) may be required.

Concrete admixtures
For the preservation of concrete admixtures based on polycarboxylates, lignosulphonates, naphtaline sulphonates, melamine sulphonates and other systems. Add Preventol ® P 30 at 250 to 2500 ppm based upon the final formulation volume (2.1 lb to 21 lb/1000 gallons).
Water based agricultural pesticide
concentrates For preservation, Preventol® P 30 should be dosed at 333 to 1667 ppm based on the final formulation volume (333 to 1667 g/cubic meter or 2.8 lb to 14 lb/1000 gallons).
Paper mills - bulk paper
Add Preventol® P 30 directly into the hydropulper, machine chest or stock chest. Apply once weekly to once daily at 167 to 667 ppm (0.4 lb - 1.5 lb per ton).
Paper mill process
water Apply at a convenient point early in the process system (machine chest, constant head box or backwater loop system). Dose Preventol ® P 30 once to three times daily at 3.3 to 83 ppm in the process water. This equates to 0.07 lb to 1.66 lb per ton of finished paper or paperboard.
Industrial cooling water
For use in cooling towers, evaporative condensers, open and closed loop cooling and stored (non-potable) water, industrial and/or commercial air washers, air conditioning and humidifying systems. Preventol ® P 30 will reduce the biofouling of pipe work, heat exchangers, and condenser tubes and minimize microbial-induced corrosion. Apply Preventol ® P 30 once weekly to once monthly to the sump or tank where turbulence and flow will ensure quick dissolution. Do not apply by open pouring of liquid to cooling water systems; a metering pump delivery system is required for this use and application method. Shock dose Preventol ® P 30 at 167 to 333 ppm (1.4 lb to 2.8 lb/1000 gallons). Subsequent dosing can be reduced to 83 ppm.

For use as an antimicrobial to control the growth of slime-forming, spoilage, odor-causing and corrosion inducing bacteria and algae in water-based printing inks, fountain solutions, metal working fluids, absorbent clays, paints and other emulsion systems, chemical toilet deodorants, disinfectants, consumer, household and institutional products, adhesives, starch, pigment and mineral slurries, concrete admixtures, raw materials, surfactants, water based agricultural pesticide concentrates, paper mills - bulk paper, paper mill process water, industrial cooling water.

Stored properly in cool conditions (not over 104 °F / 40 °C) in sealed original containers, the product has a shelf life of 12 months.