1,2-Propanediol, monobutyl ether 1-Butoxy-2-hydroxypropane 29387-86-8 Butoxypropan-1-ol Butoxypropanol Dowanol PnB EINECS 249-598-7 PROPYLENE GLYCOL MONOBUTYL ETHER Propanol, 1(or 2)-butoxy- Propasol B Propylene glycol butoxy ether alpha-Propylene mono-n-butyl ether