Butoxypropanol

Butoxypropanol (1-butoxypropan-2-ol, propylene glycol n-butyl ether) is a propylene glycol ether solvent used in consumer cleaning products as a milder alternative to 2-butoxyethanol. It provides similar solvent power with reduced acute toxicity — it does not carry the H302/H312/H332 (harmful by oral, dermal, or inhalation routes) classifications that 2-butoxyethanol carries at higher concentrations. **Why it matters in fabric cleaners**: Mothers uses butoxypropanol alongside 2-butoxyethanol at <5% each in their Carpet & Upholstery Cleaner (05424). At these concentrations and in a water base, neither ingredient drives the product above a mild irritant profile. The combination improves surface wetting and soil removal performance at moderate alkalinity (pH 9.5–10.0) without significant VOC contribution. ## Regulatory status - Not CA Prop 65 listed - Not classified under TSCA as hazardous - EU CLP: classified as H315 (Skin Irrit. 2) and H319 (Eye Irrit. 2) at >10% concentration in finished products; at <5% in finished product, may fall below classification thresholds