1,5-Pentanediol is a high-purity aliphatic diol widely used as a key intermediate and solvent in chemical, pharmaceutical, cosmetic, and polymer industries. In organic synthesis, it serves as a vital building block for manufacturing polyurethanes, polyesters, and polyamides, improving polymer flexibility, adhesion, and hydrolytic stability. It is a critical raw material for producing plasticizers, lubricants, and surfactants, enhancing product durability and processability. In cosmetics and personal care, it acts as a humectant, moisturizer, and viscosity regulator, improving skin hydration and formula stability, often used in lotions, creams, and serums. In pharmaceuticals, it functions as a solvent and carrier for drug formulations, aiding solubility and bioavailability, and as an intermediate for synthesizing antibiotics, analgesics, and central nervous system agents. It also finds use in adhesives, coatings, and ink formulations as a co-solvent and reactive diluent, promoting film formation and curing. Additionally, it is employed in biochemical research and gas chromatography as a stationary phase and sample solvent.
1,5-Pentanediol is classified as GHS07 (Warning) with mild hazards. H302: Harmful if swallowed; H316: Causes mild skin irritation . Oral LD?? (rat) is >10,000 mg/kg, and dermal LD?? (rabbit) is >19,800 mg/kg, indicating low acute toxicity . Inhalation of mist may cause mild respiratory irritation, while eye contact may result in slight redness and discomfort. Skin contact rarely causes irritation, but prolonged exposure may lead to dryness. It is combustible; vapor may form explosive mixtures with air (explosion limit 1.3–13.1% v/v) . Avoid contact with strong oxidants, acids, and acyl chlorides to prevent reactions and degradation . For handling, use in well-ventilated areas or fume hoods, wear nitrile gloves, safety goggles, and dust masks. In case of skin contact, rinse with plenty of water; for eye contact, flush with water for 15 minutes. Store in cool, dry, ventilated areas away from heat and open flames. Dispose as non-hazardous waste per local regulations .
