Name: MIT/BIT In-Can Preservative (5:1 Blend)
Brand: Coatingsink
SKU: mit-bit-blend-preservative
Availability: InStock

Question 1

Why blend MIT with BIT rather than using MIT alone?

Accepted Answer

MIT (methylisothiazolinone) provides rapid, potent bactericidal action but has limited efficacy against molds and yeasts. BIT (benzisothiazolinone) complements MIT with superior fungistatic activity and better pH stability, particularly above pH 8.5 where MIT degrades faster. The 5:1 MIT/BIT blend delivers broad-spectrum in-can protection across bacteria and fungi at low total active levels, reducing formulation cost compared to using either biocide at higher single-component dosages.

Question 2

Is MIT still permitted in leave-on consumer products in the EU?

Accepted Answer

No. Under EU Cosmetics Regulation, MIT is banned in rinse-off cosmetics and restricted to 0.0015% in leave-on products. For industrial coatings, MIT remains permitted under BPR Product-Type 6 as an in-can preservative in professional-use products. Formulators targeting consumer paints (DIY market) should verify national and EU BPR authorizations and may need to switch to MIT-free alternatives such as BIT-only or OIT-based systems.

pH	4–7
Carrier	water/glycol
BIT Content	~4%
MIT Content	~20%
Recommended Dosage	0.1–0.2%

MIT/BIT In-Can Preservative (5:1 Blend)

Specifications

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