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Chemical Name: 3-Isobutyl-1-methylxanthine
Common Names: IBMX
CAS Number: 28822-58-4
Appearance: Often a white to off-white powder
Odor: Odorless
Purity: Frequently held at 98% or above in research settings
Usage: Frequently used as a non-selective phosphodiesterase inhibitor in biochemical and pharmacological studies, especially to increase cAMP levels in cells during laboratory experiments
Health Hazards: Exposure through inhalation, skin contact, or ingestion could irritate the body and lead to symptoms like headache, dizziness, or nausea. Skin or eye contact can cause local redness or discomfort. Strong evidence shows that excessive contact without proper protection leads to serious issues for those regularly handling it without controls.
Acute Toxicity: Laboratory experiences note minor acute toxicity; the substance does not seem to cause immediate severe harm in small doses typical of lab settings, yet high or chronic exposure increases health concerns.
Chronic Health Effects: Extended handling connects with respiratory tract irritation, allergic reactions, or possible impact on internal organs over time. Not classified as a known carcinogen, but gaps remain in long-term studies.
Environmental Hazards: Spillage will likely harm aquatic life if allowed to enter waterways, and attention goes to preventing ecosystem disruption.
GHS Label Elements: Commonly features an exclamation point pictogram for warning. Labels urge caution, noting respiratory and skin sensitization risks.
Main Ingredient: 3-Isobutyl-1-methylxanthine, C10H14N4O2
Concentration: Usually above 98% in research chemicals
Impurities: Trace impurities not often specified or significant, but laboratory documentation sometimes lists minimal proprietary stabilizers
Inhalation: Remove affected individual to fresh air. Watch for continued coughing or breathing trouble; if those symptoms come up, emergency care becomes crucial.
Skin Contact: Wash off with soap and water for several minutes. For itching, burning, or swelling, assessment by healthcare providers is wise.
Eye Contact: Rinse cautiously with water for several minutes, keeping eyes open if possible. Professional medical follow-up, especially if vision changes or pain persists.
Ingestion: Rinse mouth thoroughly. Do not induce vomiting. Medical attention needed for continued nausea, vomiting, or signs of toxicity.
Useful Note: Symptomatic care stands as the main approach, as no specific antidote exists for IBMX overdose.
Suitable Extinguishing Media: Use water spray, carbon dioxide, dry chemical powder, or foam. Carbon dioxide and dry powder get the job done without causing chemical reactions.
Fire Hazards: Not classified as highly flammable; combustion releases nitrogen oxides and carbon oxides which can be dangerous in closed spaces.
Protective Equipment: Firefighters need self-contained breathing apparatus and chemical resistant clothing to avoid exposure to smoke and decomposition products.
Special Precautions: Avoid inhaling vapors or dust from burning material. Ventilation after firefighting reduces lingering exposure risks in the laboratory.
Personal Protection: Don gloves, lab coat, and safety goggles. If a lot of fine dust is present, wear a mask or respirator.
Containment: Scoop up material with care to avoid dust generation. Use inert absorbent if mixed with liquid.
Cleanup: Place cleanup material into a chemical waste container for proper disposal. Surfaces should be thoroughly rinsed and decontaminated using appropriate laboratory detergents.
Environmental Precautions: Block all routes to drains, soil, and groundwater, as dry powder or solutions cause environmental impact if not managed fast.
Decontamination: Any tools or benches in contact need prompt cleaning to prevent future contact or cross-contamination.
Safe Handling Practices: Minimize exposure by working in fume hoods or well-ventilated areas. Lab staff must avoid eating, drinking, or smoking even near where the compound is used.
Protective Measures: Regularly train teams about exposure risks, encourage prompt spill response, and keep safety equipment nearby.
Storage Conditions: Store in tightly closed containers, away from heat, moisture, and incompatible chemicals (like strong oxidizers). Cool, dry places help retain purity over long stretches.
Segregation: Chemicals with strong acidity, oxidizing properties, or extreme reactivity could create unsafe mixtures, so keep stocks separate.
Engineering Controls: Good air exchange, fume hoods, and localized ventilation matter most, especially during weighing or solution preparation.
Personal Protective Equipment: Gloves, safety goggles, and lab coat serve as the first line of defense. Respiratory protection might see use where powder or aerosols could appear.
Hygienic Practices: Handwashing after handling, no personal food or drink nearby, and prompt reporting of accidental contact or spills keep labs safer.
Exposure Limits: No official workplace exposure limits for IBMX, so labs may reference similar chemicals for guidance. Conservative threshold values add a margin of safety in absence of specific regulatory advice.
Molecular Formula: C10H14N4O2
Molecular Weight: 222.25 g/mol
Appearance: White or slight off-white crystalline powder
Solubility: Soluble in water, ethanol, and organic solvents like DMSO at concentrations useful for scientific work
Melting Point: Approximately 166 - 168°C
Boiling Point: Decomposes before boiling
Odor: None
Density: Roughly 1.26 g/cm³ (estimation based on structure and related molecules)
Chemical Stability: Chemically stable under recommended storage conditions. Breaks down if heated heavily.
Incompatible Substances: Contact with strong oxidizing agents, acids, or bases triggers chemical rupture or violent reactions.
Hazardous Decomposition Products: Heating or combustion creates harmful gases like nitrogen and carbon oxides. Decomposition becomes a concern in fires or gross misuse.
Reactivity: Largely inert in normal lab use except under strong reactive conditions.
Routes of Exposure: Breathing in dust, skin absorption, ingestion, and eye contact.
Health Effects: Signals of overexposure include dry throat, mild headache, skin irritation, or shortness of breath. Animal models suggest moderate acute toxicity, and some cellular toxicity in lab settings.
Long-Term Risks: Prolonged exposure not linked firmly to cancer, but potential for allergenic effects or organ problems can’t be left out, so caution sticks.
LD50 Data: Documented values for rats often around 1000-2000 mg/kg (oral), showing it takes a large dose to reach lethal effects in mammals.
Mucous Membrane Irritant: Dust or accidental splashes can inflame inner nose, mouth, or lungs, with quick onset of discomfort.
Environmental Fate: IBMX enters water sources, spreading among aquatic organisms. Persistence causes issues since breakdown takes time.
Aquatic Toxicity: Data points to some toxic effects for aquatic invertebrates at moderate concentrations, yet non-bioaccumulative in fish or plants.
Terrestrial Impact: Release into soil can disturb microorganisms, especially in research field settings.
Bioaccumulation Potential: Studies show low tendency to build up in animal tissue, reducing long-term food chain risks compared to heavy metals or persistent organics.
Disposal Needs: Preventing release into city water systems protects animal life and community health best.
Waste Disposal: Any leftover chemical or contaminated supplies go into hazardous waste containers destined for professional chemical incineration or secure landfill.
Lab Guidelines: Cleaning residues off equipment before regular wash cycles keeps sewage and municipal treatment plants clean. Separate disposal routes ensure even trace amounts don’t reach public systems.
Regulatory Rules: Follow national and local guidance for pharmaceutical and chemical waste, as improper trash disposal invites fines and long-term pollution headaches.
Container Management: Rinsing, labeling, and checking for leaks on every chemical drum or vial knows no alternative to keep staff and the environment out of harm’s way.
Transport Restrictions: IBMX doesn’t fall under major hazardous material classes for road, rail, or air shipment, so transport remains possible through regular scientific supply chains.
Packaging Needs: Leakproof, shatterproof containers keep accidental exposure down. Outer labeling in plain English speeds up handoffs and reduces inspection headaches.
Spill Management: Carrying clear spill kits during big shipments, especially in hot weather or over long distances, makes sense for those in charge of logistics.
Chemical Inventory Status: IBMX features on several scientific and chemical regulatory lists used by major research nations, though as a specialty biochemical, it doesn’t attract the same scrutiny as industrial chemicals.
Worker Protection Standards: Most lab protection policies and institutional guidelines recognize IBMX as a controlled research chemical. Proper documentation and risk assessment keep audit trails strong.
Labeling Rules: Shipping documents include hazard statements and warning icons as noted in previous sections. Storage areas mark all containers with hazard warnings in compliance with lab safety laws.
Import/Export Controls: Generally low-restriction for non-commercial, research-only applications, but labs should confirm if new geopolitical or commercial rules apply ahead of every major order.
