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

Dow SEA-NINE 211 Fungicide

DowSEA-NINE211FungicideisapioneeringantifoulingsystemfromDow’sSEA-NINE™series,featuring4,5-dichloro-2-n-octyl-4-isothiazolin-3-one(DCOIT)asitsactiveingredient.Itdeliverseffective,eco-consciousprotectionagainstmarinebiofoulingonshiphullsandoffshorestructureswithreducedenvironmentalimpactversustraditionaltin-basedcoatings.
  • dow sea nine 211 fungicide_07b89a77
  • dow sea nine 211 fungicide_07b89a77

Features Of Dow SEA-NINE 211 Fungicide

  1. Highly effective against marine biofouling organisms, including diatoms, barnacles, and green algae.

  2. Non-biocidal mode of action—disrupts settlement signaling without persistent toxicity to non-target species.

  3. Compatible with a broad range of antifouling paint systems, including epoxy, vinyl, and acrylic-based coatings.

  4. Stable under long-term immersion and resistant to hydrolysis in seawater environments.

  5. Regulatory compliant for use in major maritime markets, including EPA-registered and EU Biocidal Products Regulation (BPR) approved.

Typical Applications Of Dow SEA-NINE 211 Fungicide

  1. Antifouling coatings for commercial shipping vessels.

  2. Protective coatings for offshore oil & gas platforms and subsea infrastructure.

  3. Fouling control in aquaculture netting and floating containment systems.

  4. Marine coatings for naval defense fleets and government vessels.

  5. Coatings for recreational boats and yachts operating in temperate and tropical waters.

Specifications Of Dow SEA-NINE 211 Fungicide

Chemical TypeOrganotin-free synthetic antifoulant (4,5-dichloro-2-n-octyl-4-isothiazolin-3-one derivative)
Product FormFree-flowing white to off-white crystalline powder
AppearanceCrystalline solid, odorless
Primary ApplicationsMarine antifouling coatings, fouling-release systems, submerged infrastructure protection
SolubilityLow water solubility; soluble in common organic solvents (e.g., xylene, butyl acetate, MEK)
Storage Stability24 months at 5–25°C in original sealed container
Key FeaturesNon-persistent, low environmental impact, settlement inhibition rather than biocidal kill
BenefitsExtended coating service life, reduced dry-docking frequency, compliance with evolving environmental regulations


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