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Name: Bisbenzimide H 33342 Trihydrochloride Hydrate
Common Use: Dye in fluorescence microscopy for DNA staining, helpful in cell sorting and chromosome identification.
Form: Typically supplied as a crystalline solid or powder, with a pale appearance.
Odor: Odorless or very faint chemical scent.
Solubility: Dissolves in water and common solvents, making it easier to use in lab conditions.
Shelf Life: Stays stable under recommended storage, sunlight and humidity can reduce its quality.
Chemical Formula: C27H28Cl3N6O · xH2O
Health Risks: Causes irritation to skin, eyes, and respiratory tract. Exposure might provoke headaches, dizziness, and respiratory discomfort. Evidence shows DNA-binding dyes should be handled carefully due to possible mutagenic risk.
Hazard Classification: Considered hazardous if inhaled, ingested, or comes in contact with skin or eyes.
Pictograms: Irritant, Health hazard.
Emergency Overview: Dust or vapors may be harmful. Not intended for direct human use.
Potential Chronic Effects: DNA interaction presents potential risk at a genetic level, giving a reason for extra caution, especially in frequent or extended exposure.
Main Component: Bisbenzimide H 33342 Trihydrochloride Hydrate, generally over 95%.
Possible Impurities: Hydration variance or trace contaminants from synthesis.
CAS: 875756-97-1 for this specific salt hydrate.
Inhalation: Remove person to fresh air. Keep breathing easy and watch for cough, sneezing, or light-headedness. If symptoms persist, medical help is needed.
Skin Contact: Wash area thoroughly with soap and water. Pay attention to persistent redness, itching, or burns.
Eye Contact: Rinse immediately with water for several minutes, lifting eyelids to clear all traces.
Ingestion: Rinse mouth thoroughly. Do not induce vomiting. Listen to signals from the body – discomfort or nausea shouldn’t be ignored.
General Note: Medical professionals should know they’re dealing with a DNA-specific dye, as this affects response choices.
Suitable Extinguishing Media: Water spray, dry chemical, CO₂, or foam tools – water jets tend to spread the powder.
Specific Hazards: Fumes may release toxic nitrogen oxides and chlorine compounds under fire conditions.
PPE for Firefighters: Full gear and self-contained breathing equipment cuts exposure to toxic fumes.
Special Procedures: Keep spills contained, avoid run-off into drains, and watch for reactivity with other stored lab chemicals.
Personal Protection: Use gloves, goggles, and lab coats. Avoid direct skin or eye exposure. Don’t inhale dust.
Spill Procedures: Scoop up solids with a minimum of dust. Dampen to keep dust down if needed. Dispose as hazardous chemical waste. Wipe surfaces several times.
Ventilation: Work in a fume hood or well-ventilated space.
Environmental Precaution: Prevent substance entering drains, soils, or water systems, as chemical persistence poses unknown risks.
Handling: Don’t eat, drink, or smoke in work areas. Careful transfer and measurement reduce risk of airborne spread.
Storage: Keep container tightly sealed. Store away from light, heat, and sources of ignition. Stable under refrigeration. Separate from reactives and acids.
Hygiene: Wash hands after use, remove contaminated clothing before breaks or leaving work area.
Training: Assign use only to skilled professionals who understand lab safety procedures.
Engineering Controls: Fume hood use is the norm for weighing and preparing dye solutions. Local exhaust and general dilution air flow keep air cleaner.
Personal Protective Equipment: Lab coats, nitrile or neoprene gloves, and safety goggles. Respiratory protection for powder handling in open air, such as a particulate filter mask.
Hygiene Measures: Frequent hand washing and regular surface cleaning.
Monitoring: Routine checks of air and surfaces for contamination help prevent build-up where people aren’t watching.
Appearance: Fine crystalline powder, white to pale yellow.
Melting Point: Noted above 300°C, decomposes rather than melting.
Solubility: Dissolves easily in water or dilute buffers. Alcohols and DMSO also work for concentrated stocks.
Odor: Practically none.
Vapor Pressure: Low for solids at room temperature.
Explosive Properties: No known explosion hazard.
Stability: Light and humidity affect color and power.
Chemical Stability: Stable under cold, dry, and dark storage.
Incompatible Materials: Strong acids, oxidizers, some metals under moist conditions.
Decomposition Products: Nitrogen oxides, carbon oxides, and hydrogen chloride.
Hazardous Reactions: None likely under normal conditions, but direct sunlight, heat, or strong chemicals speed degradation.
Routes of Exposure: Inhalation, skin, eye contact, and ingestion.
Acute Effects: Expected to cause irritation and physical discomfort on contact.
Chronic Effects: Risk of DNA binding raises mutagenicity warning. Data is limited for long-term use, but prudent risk reduction standard in molecular biology labs.
Medical Conditions Aggravated: Pre-existing eye, skin, or respiratory issues could be made worse.
Special Warning: Not tested for reproductive effects. Avoid use by pregnant workers without extra controls.
Aquatic Toxicity: Data is limited. Avoid direct release into waterways.
Persistence: Likely to resist natural degradation due to aromatic structures.
Bioaccumulation: No solid evidence of accumulation, but precaution suggests limiting environmental discharge.
Soil Mobility: Potential to migrate if spilled outdoors, surface cleaning and containment matter.
Waste Processing: Treat as hazardous lab waste. Collect all used tips, containers, and solutions for scheduled chemical pickup.
Incineration: Chemical incineration often best for organic dyes, according to environmental regulations.
Drain Prohibition: Do not flush to sewer or drain to avoid water supply contamination risk.
Container Disposal: Clean bottles, vials, and pipettes thoroughly or discard as hazardous waste.
Transport Classification: Usually shipped as “laboratory chemical”, but any break in packaging can lead to spills and risk.
Packaging: Leak-proof containers, with enough padding to prevent breakage.
Precautions: Ship with safety documents and emergency procedures easily accessible for handlers.
Labeling: Proper hazard labeling on every container and outer transport packaging.
Workplace Safety: Subject to chemical hygiene protocols due to DNA interaction potential. Worker training, ventilation, and PPE required by most safety standards.
Environmental Controls: Discharge to the environment restricted through hazardous waste rules.
Transportation Regulations: Shipment carries restrictions and documentation based on chemical risk profile.
National Lists: Registered under laboratory chemicals of concern in several jurisdictions, requiring inventory and reporting in some labs.
