How does PnB compare to Texanol as a coalescent in low-VOC paints?

PnB has a lower boiling point (170°C vs ~255°C) and evaporates faster post-film formation, resulting in lower residual VOC in the cured film. Texanol provides slower coalescence, which benefits pigment-dense or high-PVC formulations. PnB is preferred when rapid hardness development is needed after drying.

Propylene Glycol n-Butyl Ether (PnB)

Name: Propylene Glycol n-Butyl Ether (PnB)
Brand: Coatingsink
SKU: propylene-glycol-nbutyl-ether-pnb
Availability: InStock

CAS 5131-66-8

In Stock

MOQ

200 kg

Lead Time

5–10 days

Packaging

200 kg drums / IBC

Specifications

Purity	≥99.0%
Boiling Point	170°C
Density (25°C)	0.876 g/ml
Flash Point (PM)	63°C
Viscosity (25°C)	2.3 mPa·s

FAQ

Typical dosage is 2–5% on total formulation weight. PnB is most effective in acrylic and vinyl-acrylic emulsions, lowering the minimum film-formation temperature by approximately 5–10°C per 1% addition. Optimize against open-time requirements and VOC budget.

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