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Chemical Name: Papaverine Hydrochloride
Common Uses: Treatment of vascular spasms, occasional use in research labs
Appearance: White or almost white crystalline powder
Odor: Nearly odorless
Solubility: Freely dissolves in water, less so in ethanol
Molecular Formula: C20H21NO4·HCl
Classification: Not classified as a hazardous substance under GHS for pharmaceutical use, yet powder inhalation causes irritation
Main Health Risks: Inhalation and ingestion lead to headaches, hypotension, nausea
Eye Contact: Causes mild to moderate irritation
Skin Contact: Prolonged exposure brings about redness or itching
Environmental Risks: Spilled product impacts aquatic life if washed into drains
Chronic Exposure: No evidence of carcinogenicity, though repeated exposure risks liver enzyme changes and mild GI symptoms
Main Ingredient: Papaverine Hydrochloride (>98% pure)
Impurities: Minute levels of residual solvents, generally below regulatory thresholds
Formulation: Typically supplied as pure compound outside dosing forms such as ampoules or tablets
Inhalation: Move the affected person to fresh air, keep them warm and comfortable, give oxygen if breathing feels difficult
Ingestion: Rinse mouth thoroughly, seek medical advice if large quantities swallowed, watch for drowsiness or drops in blood pressure
Skin Exposure: Wash skin with water and soap, remove contaminated clothing, pay attention to persistent redness
Eye Exposure: Rinse immediately with running water for several minutes, remove contact lenses if present, get medical help for ongoing irritation
Suitable Extinguishing Media: Water spray, carbon dioxide, dry chemical, foam
Fire Hazards: Product may emit toxic fumes including nitrogen oxides and hydrogen chloride on burning
Protective Gear: Respiratory protection, full protective suit in case of significant fire
Special Advice: Use caution to prevent runoff that could carry residues into waterways
Personal Precautions: Use gloves, mask, and eye protection before cleaning
Spill Response: Contain and collect spillage with absorbent, avoid raising dust, ventilate area thoroughly
Disposal: Clean up waste using sealed, labeled containers for proper incineration
Environmental Precaution: Stop material entering drains or natural water sources
Handling: Avoid dust creation, wear proper PPE, wash hands before eating or drinking
Storage: Store in tightly sealed containers in cool, dry, well-ventilated area, away from incompatible substances such as oxidizers
Incompatibilities: Strong acids, alkalis, and oxidizing agents increase decomposition risk
Stability: Protect containers from sunlight and moisture, do not stack more than two layers deep
Occupational Limits: No established exposure limit in most regions, yet minimize exposure through engineering controls
Engineering Controls: Use lab hoods for weighing and transfers, install local exhaust for large-scale work
Personal Protection: Gloves made from nitrile, safety goggles or face shield, laboratory coats consistently worn
Respiratory Protection: Particle mask in dust-prone environments, particularly for bulk powders
Appearance: Solid, fine white powder
Molecular Weight: 375.85
Melting Point: Decomposes above 200°C
Water Solubility: More than 100 mg/mL
Flash Point: Not applicable for a solid
Odor Threshold: Not established due to negligible volatility
Bulk Density: Tends to be around 0.5–0.7 g/cm³
Chemical Stability: Stable under recommended storage, starts to degrade with heat and light
Hazardous Reactions: Strong oxidants trigger rapid decomposition
Decomposition Products: Releases potentially harmful chlorine and nitrogen oxides when exposed to fire
Conditions to Avoid: Excessive heat, open flames, incompatible chemicals, high humidity
Polymerization: Not expected under normal conditions
Likely Exposure Routes: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Large doses trigger cardiac rhythm changes, drop in blood pressure, somnolence
Irritation Data: Eyes and skin show local irritation in concentrated contact
Chronic Toxicity: In animal studies, longer exposure relates more to reversible enzyme level changes than irreversible organ damage
Sensitization Risk: No conclusive reports of allergic sensitization in most users
Reproductive Effects: Documented only at high doses far above therapeutic range
Aquatic Impact: High concentrations disrupt normal aquatic life metabolism
Persistence: Biodegrades over several weeks in active soil, persistence risks low in small spills
Bioaccumulation: Little evidence for long-term accumulation in food chains
Mobility: Soluble in water, so can travel rapidly if accidentally released
Waste Handling: Send unwanted material and contaminated disposables for incineration in facilities qualified for pharmaceutical waste
Precautions: Avoid flushing material down municipal drains or disposing with regular trash
Container Management: Rinse and properly dispose or recycle empty packaging, following local rules
Transport Regulations: Not classified as hazardous for air, land, or sea shipment according to most regional guidelines
Packaging Advice: Use sealed, waterproof containers with solid outer packaging
Spill Controls in Transit: Line boxes with absorbent pad, avoid stacking too tightly to prevent crushing
Chemical Control Laws: Not listed as a controlled substance under US DEA or European regulations in lab quantities; prescription required for therapeutic use
Workplace Safety: OSHA and EU-OSHA recommend PPE and engineering controls where considerable handling occurs
Environmental Laws: Local guidelines favor proper destruction and caution in proximity to water sources, with monitoring in large-scale installations
Documentation: Keep handling records and train employees on chemical safety best practices due to its pharmaceutical nature
