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Chemical name: 1,2-Dipalmitoyl-sn-glycero-3-phosphocholine
Synonym: Dipalmitoylphosphatidylcholine, DPPC
Common use: DPPC plays a big role in labs as a model phospholipid in cell studies and forms the backbone of lung surfactants. Folks in research circles know DPPC as a trusted tool for mimicking cell membranes in both medical and academic settings.
GHS Classification: This material hasn’t been flagged as hazardous by mainstream health standards. It doesn’t burn the skin, spark allergic reactions, or poison folks on contact. Breathing in a big cloud of DPPC dust might prompt coughing or short-lived irritation, so it’s wise not to inhale any fine powder. Fire risk isn’t a stand-out issue, but as with any organic dust, letting enough kick around in the air could spark a problem if an ignition source steps in.
Chemical composition: Pure 1,2-Dipalmitoyl-sn-glycero-3-phosphocholine, C40H80NO8P
CAS Number: 63-89-8
Purity: Lab-grade supply usually sits above 99%. Nothing else typically tags along when handled by trustworthy sources.
Inhalation: Step into fresh air and rest if irritation builds up; medical help is rare, but always possible if symptoms stick.
Skin Contact: Rinse hands or skin with basic soap and clean water, since DPPC powder doesn’t bite or burn but still clings if you let it.
Eye Contact: Flush out dust with plenty of water, blinking firmly. Seek a doctor if redness or soreness doesn’t calm down.
Ingestion: If someone swallows DPPC, rinse mouth; don’t force vomiting. The body doesn’t treat it as poison at low amounts but call a professional for any lingering upset.
Suitable extinguishing agents: Use foam, carbon dioxide, dry chemical powders, or water mist. DPPC doesn’t flare up without stress, but an open fire always deserves respect.
Hazards: Burning can produce smoke and irritating fumes, mainly carbon oxides and small amounts of phosphorous compounds.
Protective equipment: Fire crews should wear self-contained breathing units and good gear for chemical smoke, not just because of DPPC, but out of habit when entering any lab blaze.
Spill response: Scoop up solid powder gently, avoid whipping dust into the air, and seal collected waste in a stable container.
Cleanup: Clean floors and benches with damp towels or wipes to cut down airborne dust. Standard lab gloves and eye protection fit the bill for this task.
Ventilation: Keep the air moving if cleanup feels dusty or cramped, especially in older labs with less airflow.
Handling: Gloves, goggles, and patience go far for keeping DPPC out of your eyes and mouth. Handle powders with care to stop air dispersal and surface contamination. Skip eating and drinking in the same room. If the job calls for melting DPPC, settle it in a water bath under a fume hood.
Storage: Store DPPC in tight-sealed bottles, preferably in cool, stable places like fridges meant for chemicals. Good labeling and clear shelves help avoid mix-ups and pointless exposures. Protecting powders from moisture keeps them from caking up and messing with accuracy.
Engineering controls: Work beneath a fume hood for long, repeated tasks or for transfers involving loose powder. Closed bottles or vials stop accidental spills from turning into a nuisance.
Personal protection: Chemical splash goggles, lab coats, and nitrile gloves supply a strong defense. Folks with lung sensitivities should use basic dust masks during heavy weighing or transfer.
Occupational limits: No set limits on DPPC dust, but treating powders with the same respect as any non-toxic research-grade chemical doesn’t overcomplicate safety.
Appearance: White, fine or grainy powder
Odor: None
Melting point: About 41°C
Solubility: Hydrophobic—does not dissolve in water; mixes better in ethanol, chloroform, or similar solvents
Stability: Stable under cool, dry storage; humidity makes DPPC clump, but won’t change its core.
Chemical stability: DPPC stays solid in unbroken containers under cool, dark, and dry conditions.
Reactivity: Doesn’t react wildly with most lab chemicals. Strong acids, bases, or oxidizers might degrade it with enough force, but bench work tends to keep things mild.
Decomposition: Heating above standard lab temperatures may break DPPC down into smaller fats, phosphates, or gases you want to avoid breathing.
Acute effects: DPPC rarely triggers serious problems by contact, even in bulk, but dust can irritate mucous membranes, eyes, and throats.
Chronic effects: Long-term effects haven’t raised flags in animal studies or occupational records for lab staff.
Allergenicity: Allergic reactions aren’t on the books; still, anyone managing lipids should keep an eye on their own responses.
Environmental fate: DPPC breaks down slowly in the wild. Since it mimics cell membrane stuff found in animals, the environment won’t see it as a foreign enemy unless dumped in truckload quantities.
Aquatic risk: Spills in drains or streams might coat surfaces, so keeping it contained keeps waterways healthier.
Bioaccumulation: No evidence for DPPC piling up in the food chain.
Waste handling: Gather waste DPPC into chemical-labeled bins; don’t flush it or sweep residues down the sink.
Preferred disposal: Send unused DPPC through routine chemical waste programs. Burning should happen only in proper chemical incinerators, not campus trash bins.
Regulatory status: Most places see DPPC as a low-risk material, but stricter research labs may tag it as controlled waste just to be sure.
UN number: Not regulated for basic road, rail, or air freight.
Packing group: No hazard group assigned.
Precautions: Keep DPPC sealed against moisture and heat over long hauls—practical for both safety and lab accuracy down the line.
Chemical inventories: Most national inventories and chemical lists mark DPPC as a permitted research compound.
Occupational standards: No special worker rules in place, aside from standard chemical safety rules.
Safety updates: Keeping researchers up to speed requires more than reading paperwork—a solid safety culture at the bench means less chance for bad habits around even the tamest materials.
