Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Solvay Tolcide 4frac Biocide

Solvay Tolcide 4frac Biocide is a high-performance, formaldehyde-releasing biocide from Solvay’s Tolcide® series, specifically formulated for industrial water treatment and process fluids. It delivers broad-spectrum microbial control against bacteria, fungi, and algae with excellent stability, low toxicity, and compatibility in challenging chemical environments.
  • solvay tolcide 4frac biocide_ad7dd350
  • solvay tolcide 4frac biocide_ad7dd350

Features Of Solvay Tolcide 4frac Biocide

  1. Highly effective broad-spectrum biocide against bacteria, fungi, and algae in oilfield water systems.

  2. Stable performance under high salinity, elevated temperature, and low pH conditions typical of hydraulic fracturing fluids.

  3. Low foaming formulation compatible with common surfactants, polymers, and friction reducers used in frac fluids.

  4. Non-oxidizing chemistry that avoids degradation of sensitive additives and minimizes corrosion risk to downhole equipment.

  5. Ready-to-use liquid concentrate requiring no on-site activation or dilution prior to injection.

Typical Applications Of Solvay Tolcide 4frac Biocide

  1. Primary biocide for hydraulic fracturing (frac) flowback and produced water management.

  2. Microbial control in recycled frac water storage ponds and transfer lines.

  3. Prevention of sulfate-reducing bacteria (SRB) and acid-producing bacteria (APB) in unconventional shale well completions.

  4. Supplemental biocidal treatment in slickwater and crosslinked gel frac systems.

  5. Control of biofilm formation in surface equipment, including blenders, manifolds, and injection pumps.

Specifications Of Solvay Tolcide 4frac Biocide

Chemical TypeQuaternary ammonium compound (QAC) / Isothiazolinone blend
Product FormLiquid concentrate
AppearanceAmbient clear to slightly hazy yellow liquid
pH (as supplied)6.0 – 8.5
Density (20°C)1.02 – 1.06 g/cm³
SolubilityCompletely miscible with fresh, brackish, and high-TDS formation waters
Recommended Dosage Range100 – 500 ppm active ingredient in treated water
Storage Stability≥24 months at 5–30°C in original unopened container


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