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Product Name: Dulbecco’s Modified Eagle Medium, High Glucose
Main Use: Standard cell culture medium supporting a wide range of mammalian cells
Typical Appearance: Clear, red-colored liquid when phenol red is present
Distinctive Chemical Markers: Glucose (around 4.5 g/L), essential salts, amino acids, vitamins
Lab Prevalence: Routinely found in biomedical and pharmaceutical facilities, research hospitals, university labs
Odor Traits: Mild, not especially strong or offensive
Identification Significance: Recognized by composition and function, integral to tissue culture workflows
Physical Hazards: Usually low, non-flammable, water-based
Health Hazards: Classified as minimally hazardous for laboratory users handling ready-to-use liquid
Chemical Sensitivities: Risk of irritation chiefly due to sodium bicarbonate buffer and possible phenol red trace
Hazard Signals: No acute toxicity expected from direct contact with clean solution; splashes can cause mild eye or skin irritation
Chronic Exposure: Repeated contact rarely causes health problems but good practice calls for basic protections
Importance: Users should monitor for contaminated material rather than the medium itself
Components: Water, D-glucose, L-glutamine, sodium pyruvate, sodium chloride, potassium chloride, calcium chloride, magnesium sulfate, sodium bicarbonate, essential amino acids like glycine, arginine, essential vitamins like choline chloride, pyridoxine HCl
High Glucose Feature: Roughly 4.5 grams of glucose per liter
Buffering Agents: Bicarbonate, with HEPEs sometimes added for CO2-free buffering
Optional Markers: Phenol red for pH indication in some variations
Safety Status: All constituents fall into categories of generally recognized as safe for laboratory usage but not for human or animal ingestion
Eye Contact: Quickly flush eyes with water for at least 10 minutes
Skin Contact: Wash exposed area with soap and water
Inhalation: Unlikely from standard handling, but seek fresh air if vapor or mist is incidentally inhaled
Ingestion: Rinse mouth and seek guidance from lab supervisor—deliberate consumption not intended
Medical Attention: Seek further evaluation if irritation persists after exposure
Flammability: Essentially non-flammable
Suitable Extinguishing Media: Water spray, standard foam, CO2, or dry chemical if fire involves the lab environment
Combustion Risks: Degradation products rare; simple salts or carbon dioxide,
Lab Considerations: Emphasis on securing adjacent chemical hazards, since DMEM itself offers little fire risk
Spill Response: Wipe up with absorbent material, wash remaining residues with water
Personal Precautions: Wear gloves and eye protection to avoid direct contact
Environmental Management: Do not pour significant amounts into drains without dilution; small volumes pose minor risk in most facilities
Decontamination: Surface cleaning with soap and water is enough for nearly all exposures
Handling: Avoid direct skin and eye contact; standard gloves suffice
Containment: Use aseptic technique to prevent microbial contamination
Storage: Keep refrigerated at 2-8°C for stability; avoid freeze-thaw cycles which degrade nutrients
Container Advice: Tight caps necessary to block contamination and evaporation
Material Longevity: Observe expiration date—degradation reduces cell culture reliability
Eyes: Use laboratory safety glasses or goggles
Hands: Wear disposable gloves, nitrile or latex preferred
Inhalation: Work in well-ventilated area; open bottles within biosafety cabinet when possible
Clothing: Lab coat or protective apron recommended to shield street clothes
Engineering Controls: Biosafety cabinet helps prevent contamination rather than exposure
Physical State: Clear liquid
Color: Usually pink or red due to phenol red; colorless formulations exist
Odor: Mild, almost imperceptible
pH: Typically ranges from 7.0 to 7.4
Solubility: Fully soluble in water
Boiling Point: Slightly above 100°C due to dissolved salts
Stability in Light: Protected bottles block light to slow vitamin degradation
Chemical Stability: Stable if refrigerated, sensitive to microbial growth and extreme pH shifts
Hazardous Reactions: Unlikely without strong acids, bases, or oxidizers
Decomposition Products: Negligible risks at room temperature; may yield basic organics if decomposed
Storage Vulnerabilities: Avoid long-term light or heat exposure; vitamins and amino acids become unstable
Acute Toxicity: No evidence for acute toxicity in research scenarios
Chronic Toxicity: Long-term, low-level exposure does not show negative human health effects
Routes of Exposure: Eye and skin, rare ingestion
Sensitization: Allergic reactions very rare; not reported in healthy adults
Carcinogenicity/Mutagenicity: Components not listed as carcinogens
Environmental Fate: Main constituents rapidly diluted, broken down in water systems
Toxicity to Wildlife: Formulation contains only nutrients and salts, minor risk in typical disposal scenarios
Persistence: Sugars and amino acids break down rapidly outdoors
Bioaccumulation: Unlikely for any constituent
Lab Disposal: Pour small volumes down laboratory drains with plenty of water following standard policy
Contaminated Medium: Treat as biohazardous or chemical waste, especially after use with infectious agents
Container Disposal: Decontaminate or autoclave bottles if reused
Local Guidance: Adhere to institutional and municipal requirements for disposal
Shipping Hazards: Not classified as hazardous under most dangerous goods regulations
Packing: Ship cold with leak-proof packaging to maintain stability
Transit Temperatures: Critical to hold at 2-8°C, never freeze
Lab Receiving: Inspect for leaks or temperature damage upon receipt
Occupational Controls: Falls under standard laboratory safety regulations
SARA/OSHA Categorization: No major U.S. hazardous chemical listings for individual ingredients
Global Classification: Not considered dangerous according to global chemical safety systems
Sustainability: Most institutions stress good cold-chain management and safe handling rather than regulatory imperatives
