“No direct cosmetic skin-benefit evidence found for Propylene Glycol n-Butyl Ether; exact-material evidence instead shows rapid ex vivo human-skin permeation and possible increased dermal exposure risk.”
Propylene Glycol n-Butyl Ether
Cosmetics
Code: 1254
Propylene Glycol n-Butyl Ether (popular trade name Dowanol PNB)
Propylene Glycol n-Butyl Ether (popular trade name Dowanol PNB)
It is a fast evaporating type of glycol. Suitable for formulas that need to dry quickly, such as nail polish that is free of acetone.
This product is for specific use only in certain applications. Not for use in cosmetics applied to the skin.
INCI Name : Propylene Glycol n-Butyl Ether
- Room (25-40C)
- 24 Months from manufacturing or testing date.
- 0.10% - 100.00%
- 0.00%
- Add into water or oil phase. Heat tolerant.
- Avoid heat above 80C
- 0.00 - 0.00
- Soluble in Oil, Soluble in glycols, Soluble in Ethoxydiglycol, Soluble in Ethanol
- -
| Test Name | Specification |
|---|---|
| Appearance | Colorless liquid |
| Purity (%) | 99.5 Min |
| Boiling Point (C) | 169.1-173.1 |
| Density (g/cm3) | 0.87-0.89 |
| Acid Value (mgKOH/g) | 0.1 Max |
| Color (Pt-Co) | 20 Max |
| Water Content (%) | 0.1 Max |
“Exact-material/topical safety evidence: butoxypropanol was evaluated after topical administration in rabbits; this supports dermal toxicology assessment, not a skin-care benefit claim.”
“Closest ingredient-family evidence: propylene glycol is used as a topical co-solvent and can modulate/enhance skin penetration of drugs, but this does not establish a direct skin benefit for Propylene Glycol n-Butyl Ether.”
“Closest ingredient-family evidence: chemical penetration enhancers can improve delivery through the stratum corneum; this supports only a vehicle/delivery role, not a cosmetic skin-benefit claim for Propylene Glycol n-Butyl Ether.”
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