Name: OIT Biocide 45% (2-Octylisothiazolinone)
Brand: Coatingsink
SKU: oit-biocide-preservative
Availability: InStock

Question 1

What is the difference between OIT and MIT for wet-film (in-can) preservation?

Accepted Answer

OIT (2-octylisothiazolinone) is a broad-spectrum, slow-release biocide effective against bacteria, yeast, and molds, making it well-suited for long-term wet-film preservation in paints stored for 12–24 months. MIT (methylisothiazolinone) acts faster but has a narrower spectrum and higher sensitization risk. OIT is preferred when longer open-time stability and mold protection are needed; MIT is used at low levels for quick bacteriostatic action. Many formulations combine both for synergistic effect.

Question 2

Is OIT Biocide 45% compliant with the EU Biocidal Products Regulation (BPR)?

Accepted Answer

Yes. OIT is an approved active substance under EU BPR Product-Type 6 (in-can preservatives for paints and coatings) and Product-Type 7 (film preservatives). Formulators must ensure the finished biocidal product is authorized in the target market. This product contains 45% OIT active in propylene glycol and is intended as a raw material for authorized biocidal formulations. Always check local regulatory status before use.

Carrier	propylene glycol
Appearance	yellow to amber liquid
pH (10% solution)	4–6
Recommended Dosage	0.05–0.15% active
Active Content (OIT)	45±2%

OIT Biocide 45% (2-Octylisothiazolinone)

Specifications

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