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Name: Supelcosil LC-18-DB HPLC Column, specified as 5μm particle size, 25cm x 4.6mm dimensions.
Main Use: This column supports modern liquid chromatography labs, focusing on separating and analyzing complex organic mixtures.
Main Materials: Silica-based solid phase with octadecyl silyl bonded phase, sealed in stainless steel housing.
Common Applications: Nutritional supplement testing, pharmaceutical research, water quality analysis, food safety inspection, all rely heavily on this column for contaminant and active ingredient identification.
Physical Description: Rigid tubular device with metal finish, one end capped and the other open for chromatographic workflow.
Physical Hazards: The column itself poses a risk of sharp edges, possible pinching during equipment assembly, and breakage under physical force.
Chemical Hazards: The silica media in its bonded and packed state does not typically release dust or aerosols, though mishandling during dismantling could result in particulate exposure.
Acute Health Risks: No acute toxicity expected from intact product. Inhalation or ingestion of silica dust could cause respiratory irritation; direct eye contact with leaking column contents presents potential irritation risk.
Chronic Effects: Prolonged, unprotected exposure to free silica dust poses long-term lung risks if the bonded phase degrades or the media is pulverized. Under normal use this risk remains very low.
Main Component: Spherical silica particles (SiO2) with a proprietary octadecyl derivatization for hydrophobic retention.
Housing: Stainless steel, commonly type 316, chosen for its corrosion resistance and mechanical durability.
Bonded Phase: Non-volatile C18 groups chemically attached to silica backbone, not considered hazardous in a fixed solid matrix.
Fillers and Binders: No active solvents, binders, or volatile organic components present in the finished column.
Potential Trace Impurities: Manufacturing solvents such as methanol, acetonitrile, or water may be present as surface residues at trace levels but do not typically pose measurable risk.
Inhalation: Remove person to fresh air if large quantities of silica dust become airborne; seek medical attention for respiratory discomfort.
Eye Contact: Rinse with copious water for at least fifteen minutes if particulates or fragments get into eyes; medical help advised if irritation persists.
Skin Contact: Brush off loose particles; rinse skin with soap and water. Stainless steel edges may cut, requiring bandaging and disinfecting.
Ingestion: Seek medical attention for accidental swallowing of media; risk is minimal due to physical size, but not zero.
Fire Risk: Neither the silica matrix nor the stainless steel housing catches fire under standard laboratory or storage conditions.
Combustion Products: If exposed to extreme heat or direct flame, degradation of bonded organic groups may generate minor quantities of carbon oxides or silicon oxides.
Suitable Extinguishing Media: Use foam, CO2, dry chemical or water spray for laboratory bench or room fires; the column itself neither propagates flames nor exacerbates combustion.
Protective Equipment: Firefighters advised to use self-contained breathing apparatus to avoid inhaling smoke from associated materials.
Spill Response: For intact columns, customary cleaning is sufficient. Fractured columns may release silica particles; sweep up using dustless methods, dispose in a manner consistent with lab waste rules.
PPE Recommendations: Wear gloves, safety eyewear, lab coat; avoid creating dust or allowing release of packed phase material.
Environmental Precautions: Prevent spilled media or column remnants from entering drains, watercourses or soil.
Disposal: Segregate broken pieces for hazardous waste if contaminated with analytes or organic buffer systems.
Handling: Use careful technique to avoid dropping, striking, or applying torque to column ends; stainless steel edges may be sharp.
Storage Conditions: Store vertically, in dry, temperature-controlled cabinets, away from corrosive liquids and strong acids or bases.
Misuse Risks: Over-tightening fittings can rupture endcaps; improper cleaning with incompatible solvents can degrade bonded phase stability.
Best Practice: Label columns with last used solute class, avoid exposure to dust and direct sunlight, and never use a column with visibly damaged packaging.
Ventilation: Normal laboratory ventilation is adequate under standard use conditions.
Respiratory Protection: Unnecessary for standard operation; if column broken or powder released, NIOSH approved dust mask or respirator is practical.
Eye/Face Protection: Laboratory safety glasses required for installation, disassembly, or handling damaged columns.
Skin Protection: Use of lightweight gloves and laboratory coat during manipulation and maintenance.
Exposure Limits: None listed for finished product; consult silica particulate limits for hypothetical airborne exposure situations.
Physical State: Solid, rigid, cylindrical device.
Appearance: Bright metallic body, often with printed ID label or etched markings; ends fitted with plastic or metal ferrules.
Odor: Odorless.
Melting/Boiling Point: N/A to final product; silica decomposes above 1600°C, stainless steel loses structural integrity below that.
Solubility: Matrix materials insoluble in water and organic solvents used under normal analytical conditions.
Stability: Chemically inert under typical HPLC pressures and flows, maintains packed bed geometry unless subjected to extreme pH.
Chemical Stability: Remains stable in a pH range typical for reversed-phase chromatography (pH 2–8).
Incompatibilities: Prolonged exposure to strong acids or bases can hydrolyze bonded phase, degrading column performance and integrity.
Decomposition Products: Harsh acidic or alkaline hydrolysis produces silica gel and releases alkyl or siloxane fragments.
Reactivity: No violent reactions or hazardous polymerization under laboratory conditions; care required for cleanout solvents and post-use disposal.
Routes of Exposure: Inhalation, ingestion, and skin or eye contact (mainly from damaged or leaking columns).
Toxicity Profile: Finished and contained silica has minimal toxicity. Free silica dust inhalation can cause respiratory tract irritation or silicosis after chronic high-level exposure, rare using prepared columns.
Acute Effects: Irritation of mucous membranes possible if dust present; accidental ingestion results in mechanical obstruction risk rather than chemical toxicity.
Chronic Effects: Occupational exposure limits to silica apply in industrial fabrication, but risk within routine chromatography settings is extremely low with smart handling.
Environmental Fate: Silica-based media is persistent; fine particles could enter waterways from improper disposal, resulting in long-term sediment build-up rather than acute toxicity.
Bioaccumulation: Virtually none for both silica and stainless steel housing.
Aquatic Toxicity: Negligible but chronic sedimentation due to persistent solid particles.
Biodegradation: Silica is not biodegradable, but is environmentally inert; stainless steel housing remains in landfill or recycling streams for decades.
Preferred Disposal: Used columns containing hazardous sample residues or solvents call for incineration or controlled landfill as chemical waste.
Decontamination: Columns flushed of mobile phases with inert solvents prior to disposal minimizes environmental impact.
Recycling: Stainless steel cases can be separated and recycled once contents are chemically cleaned; silica filling usually qualifies for landfill.
Regulatory Notes: Always check local hazardous waste rules for solvent or contaminant presence—regular lab columns without contamination generally pass for non-hazardous solid waste.
DOT and IATA: No regulated hazards for finished columns unless grossly contaminated with solvents or analytes during use.
Shipping Precautions: Columns shipped in shock-resistant boxes; excessive force or jostling can compromise column bed and lead to future performance failure.
Labeling: Clearly mark with “laboratory equipment” or similar tag.
Special Considerations: Used columns with volatile mobile phase residues may need appropriate secondary containment during transport.
Workplace Regulation: No explicit listing as a hazardous article under OSHA, but workplace silica regulations apply if particle exposure occurs during column assembly or repair.
REACH/TSCA Status: Silica and stainless steel components meet general chemical inventory rules for scientific equipment.
Lab Best Practice: Track used columns by content exposure records to remain compliant with internal and external audits.
