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

Clariant Velsan AS Preservative

Clariant Velsan AS Preservative is a high-performance, broad-spectrum antimicrobial agent from Clariant’s Velsan preservative series. Designed for water-based industrial formulations, it effectively controls bacteria, fungi, and algae. Its low-odor, non-volatile composition ensures stability and regulatory compliance across coatings, adhesives, and metalworking fluids.
  • clariant velsan as preservative_41a35c94
  • clariant velsan as preservative_41a35c94

Features Of Clariant Velsan AS Preservative

  1. Broad-spectrum antimicrobial activity against bacteria, yeasts, and molds.

  2. pH-stable performance across a wide range of 4–10, suitable for diverse formulation conditions.

  3. Low volatility and excellent compatibility with common surfactants, polymers, and electrolytes.

  4. Non-oxidizing chemistry, minimizing risk of corrosion or material degradation in end-use systems.

  5. EcoVadis-recognized sustainable preservative with readily biodegradable components and low aquatic toxicity profile.

Typical Applications Of Clariant Velsan AS Preservative

  1. Industrial water treatment systems, including cooling towers and closed-loop circuits.

  2. Water-based metalworking fluids and machining coolants.

  3. Latex emulsions and polymer dispersions used in coatings and adhesives.

  4. Construction chemicals such as grouts, tile adhesives, and cementitious mortars.

  5. Oilfield service fluids, including fracturing fluids and drilling mud additives.

Specifications Of Clariant Velsan AS Preservative

Chemical TypeIsothiazolinone-based blend (predominantly 2-methyl-4-isothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one)
Product FormAqueous solution
AppearanceClear, pale yellow to amber liquid
pH (1% aqueous solution)2.5–4.5
Density (20 °C)1.08–1.12 g/cm³
Active Content1.5–1.7% w/w total isothiazolinones
SolubilityMiscible with water; compatible with most polar organic solvents
Primary ApplicationsPreservation of industrial process fluids, coatings, construction chemicals, and oilfield formulations


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