© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Product Name: 1,5-Pentanediol Chemical Formula: C5H12O2 Synonyms: Pentane-1,5-diol CAS Number: 111-29-5 Appearance: This compound comes as a colorless, slightly viscous liquid with a faint, sweet odor, showing up on chemical shelves in labs and manufacturing facilities. Recognizing it by its look and smell helps in identifying accidental leaks or spills by eye or nose, especially in places that handle bulk chemicals daily.
Hazard Classification: Not classed as a major health or environmental irritant under most chemical guidelines, but the eye can sting and skin can become sensitive after regular or heavy exposure. Respiratory irritation arises if vapors linger in the air of a poorly ventilated workspace. This compound is not flammable at room temperature but combustible if direct flames reach it, so storing far from ignition sources matters. Symptoms of Exposure: Eyes get red or water quickly on contact. Skin can dry out or feel tight if contact continues without washing. Inhalation of mist or vapors in enclosed settings brings on coughing or sore throat. Swallowing by mistake would upset the digestive tract.
Main Ingredient: 1,5-Pentanediol, typically found in pure form in most containers labeled as such. Purity usually measures higher than 98%, with water or trace amounts of related glycols as possible impurities. Old or exposed batches do pick up a little water from the air, but storage in tight drums or bottles keeps the product dry and stable on the shelf for years.
Eye Contact: Rinse with plenty of room temperature water for 10-15 minutes, blinking to flush away all traces. Remove contact lenses if safe to do so, then keep rinsing. Skin Contact: Rinse with running water and mild, fragrance-free soap. Remove contaminated clothing. Mild irritation goes away with a quick wash, but patch test before repeated contact. Inhalation: Move to fresh air, open windows, and call for help if coughing or shortness of breath doesn’t stop. Fresh air works best. Ingestion: Drink small sips of water, but don’t try to induce vomiting. Reach out to a healthcare professional if discomfort lingers or large amounts were swallowed.
Suitable Extinguishing Media: Water spray, dry chemical extinguishers, or carbon dioxide work to douse flames from containers or spills. Special Hazards: Burning sends out carbon oxides that bring respiratory danger. The main threat comes if flames reach storage containers or spill areas. Protective Equipment: Firefighters work better in full gear—self-contained breathing apparatus, chemical-proof gloves, and coats to avoid inhaling smoke or getting splashes on their skin. Firefighting Advice: Keep barrels or containers cool with water spray to reduce explosion risk. Stay upwind, take breaks, and don’t linger near the hottest spots.
Personal Precautions: Put on chemical-resistant gloves and splash goggles before handling any spill. Shoes with good traction prevent slips. Environmental Precautions: Avoid washing large amounts down the drain, since concentrated spills stress wastewater systems. Dam up with sand or earth if the spill threatens storm drains. Clean-up Methods: Absorb small spills with an inert material such as sand, clay, or commercial absorbent granules, then sweep up and place in a chemical waste bin. After cleaning, wash the area with plenty of water. Ventilation: Open windows or use local exhaust fans to clear vapors, especially in labs or small rooms.
Handling: Use in rooms with airflow, and keep the bottle sealed tight after pouring. Wear gloves and avoid direct skin or eye contact. Resealing containers prevents moisture from creeping inside, keeping the product useful and safe. Storage: Store in a cool, dry spot away from ignition sources and direct sunlight. Keep jugs or drums capped and upright to avoid leaks. Mixing with strong acids or oxidizers should be off-limits, as that sparks unwanted reactivity or hazardous vapors.
Engineering Controls: Fume hoods or local ventilators pull out vapors, keeping indoor air cleaner for workers and students. Respiratory Protection: In crowded, unventilated settings or large spills, dust masks or cartridge respirators keep sensitive lungs clear, but fresh air is usually enough for small volumes. Glove Type: Nitrile, neoprene, or butyl gloves work best, and snap-off gloves keep clean-up simple for everyone. Eye Protection: Splash goggles, not just glasses, block stray droplets. Other Protection: Lab coats or aprons prevent chemical drips from soaking into clothing, so workers wash up at the end of their shift and head home without worry.
State: Clear, low-viscosity liquid at typical room temperatures. Odor/Texture: Mild, sweet scent, slightly oily feel between fingertips. Boiling Point: Roughly 248°C at standard pressure. Melting Point: Near –16°C, so it rarely solidifies at room temperature. Solubility: Mixes completely with water and many alcohols. Density: Around 1.014 g/cm³ at room temp. Vapor Pressure: Low, meaning evaporation into room air goes slowly unless heated.
Chemical Stability: Remains stable for years if stored away from extreme heat or open flame, a trait that matters for folks running long-term projects in busy labs or production facilities. Reactivity: Avoids trouble except in rare cases of mixing with powerful oxidizers or acids, which can kick off dangerous reactions. Hazardous Decomposition: Burns down to carbon monoxide and carbon dioxide, both of which pose respiratory hazards in closed spaces.
Acute Toxicity: Swallowing sizable amounts upsets the stomach, but very high doses are needed before seeing major toxicity in animal tests. Values such as oral LD50 for rats hover in the thousands of mg/kg range. Skin/Eye Contact: Frequent spills lead to dryness, cracking, or slight redness in sensitive skin and cause eyes to water or feel gritty after splashes. Sensitization: Allergic reactions are rare, but patch testing new compounds is wise for sensitive or high-exposure workers. Chronic Exposure: Repeated heavy contact irritates the skin over long periods, but no lasting damage shows up in published studies after moderate, typical use.
Persistence/Degradability: Microbes in soil and sewage can break down 1,5-Pentanediol, so leaks or spills rarely persist for long in open land or wastewater. Bioaccumulation: Chemical surveys and field studies don’t point to buildup in aquatic life or food chains, since it dissolves easily in water and moves out with run-off. Aquatic Toxicity: Fish or small water critters show mild stress only at high concentrations. Conservative handling keeps chemical loads downstream to a minimum, which keeps rivers, lakes, and marshes healthy for wildlife.
Waste Handling: Combine spills and excess with other compatible, non-reactive chemicals in sealed containers and label for licensed chemical disposal. Environmental Precautions: Keep volume spills or rinse water out of streams, sewers, and soil by diking and collecting larger runoff. Local Regulations: Disposal routes hinge on city or state codes, but treating as chemical waste and shipping with a waste contractor keeps liability issues at bay. Large industries and schools organize collections to minimize small-scale dumping.
Handling During Shipping: Not a dangerous good by most global transport codes, so packing uses regular, sealed drums or bottles on pallets or in crates. Precautions in Transit: Secure upright, keep cool, and shield from heat during shipping, so leaks or ruptures don’t reach shelves or cause accidents at warehouses. Spill Response: Cleanup kits, sturdy gloves, and access to water stations make it easier for truckers and warehouse teams to handle emergencies.
Labeling Requirements: Most regions call for clear hazard pictograms and phrase labels showing the risks of skin/eye contact and proper first aid steps. Workplace Controls: Employers guarantee regular safety training and make protective gear available as part of safety audits, since even low-toxicity compounds need boundaries for stress-free use. Chemical Inventory Lists: Listed on national and international chemical inventories, signaling it falls under workplace monitoring, reporting, and compliance checks where applicable.
