Product Name: 2,5-Dihydroxy-1,4-Benzoquinone
Chemical Formula: C6H4O4
CAS Number: 615-94-1
Other Names: Dihydroxyquinone, Hydroxy-p-benzoquinone, DHBQ
Recommended Use: Laboratory chemical, organic synthesis, research applications
Manufacturer Details: Supplier contact information should be referenced directly from the shipping documentation.
Classification: Eye irritation, skin irritation, harmful if swallowed or inhaled
Signal Word: Warning
Hazard Statements: Causes serious eye irritation, may cause skin irritation, may cause respiratory irritation, harmful if swallowed
Precautionary Statements: Avoid breathing dust, fumes, gas, mist, vapors, spray; wear protective gloves, protective clothing, and eye protection; wash hands thoroughly after handling; do not eat, drink, or smoke when using this product
Hazard Pictograms: Exclamation mark
Other Hazards: May cause allergic skin reaction in sensitive individuals, dust may aggravate respiratory conditions
Chemical Name: 2,5-Dihydroxy-1,4-Benzoquinone
CAS Number: 615-94-1
Concentration: ≥99% by weight
Impurities: May contain trace levels of related benzoquinones or hydroxy compounds as technical impurities, typically less than 1%
Inhalation: Move the exposed person to fresh air; if breathing difficulties continue, seek medical attention; provide oxygen if available and seek immediate medical help for severe symptoms
Skin Contact: Remove contaminated clothing; wash affected area with soap and water for several minutes; if irritation or redness persists, get medical advice
Eye Contact: Rinse cautiously with water for at least 15 minutes, lifting eyelids to ensure thorough flushing; remove contact lenses if present and easy to do; seek medical attention if discomfort or vision changes develop
Ingestion: Rinse mouth thoroughly; do not induce vomiting; give water to drink if conscious and alert; seek medical attention for gastrointestinal symptoms such as nausea, vomiting, or abdominal discomfort
Most Important Symptoms: Irritation, redness, coughing, sneezing, stomach upset; note delayed effects on eyes or skin possible
Advice for Physicians: Treat symptomatically, monitor airway and vitals, provide supportive care
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Unsuitable Extinguishing Media: No known restrictions but avoid using strong water jets, which may scatter the material
Specific Hazards: In case of fire, hazardous combustion products may include carbon monoxide, carbon dioxide, toxic fumes
Special Protective Equipment: Firefighters should wear self-contained breathing apparatus and protective clothing
Fire Fighting Instructions: Avoid inhaling smoke, approach fire from upwind, use caution to prevent contaminating water courses and drains
Personal Precautions: Wear appropriate PPE, including gloves, safety glasses, dust mask or respirator; avoid generating dust and ensure good ventilation
Environmental Precautions: Prevent substance from entering surface water, soil, or drains due to potential toxicity
Clean-Up Methods: Sweep or shovel up material carefully to avoid dust generation; collect into suitable waste container for disposal; ventilate area and thoroughly clean surfaces with water and detergent; avoid dry sweeping which could spread dust
Other Recommendations: Notify relevant authorities if large spillages occur, particularly if contamination or release to the environment is likely
Handling: Use with appropriate exhaust ventilation; handle small quantities with laboratory tools to reduce dust exposure; avoid contact with skin and eyes; wash thoroughly after handling
Storage: Keep container tightly closed in a cool, dry, well-ventilated area away from sources of ignition and incompatible substances; store in original container or chemically compatible secondary container; label clearly and avoid stacking heavy objects on top of stored drums or bottles
Incompatible Materials: Strong oxidizers, strong reducing agents, strong acids or bases
Hygiene Measures: No eating, drinking, or smoking in storage or work areas; maintain good housekeeping
Exposure Limits: No established occupational exposure limits for this compound; general dust exposure guidelines may apply (ACGIH, OSHA Particulates Not Otherwise Regulated)
Engineering Controls: Local ventilation, fume hood, enclosed processing to limit dust
Personal Protective Equipment: Chemical-resistant gloves (nitrile, latex); safety goggles or face shield; lab coat or overalls; use of NIOSH-approved respirator under dusty conditions
Environmental Exposure: Use engineering precautions to prevent discharge into the environment; monitor air and wastewater for workplace contamination if processing significant quantities
Appearance: Yellow to brownish crystalline solid or powder
Odor: Slightly phenolic or quinone-like odor
Molecular Weight: 140.09 g/mol
Melting Point: Approximately 285°C (decomposes before melting)
Boiling Point: Not available (decomposes on heating)
Solubility: Slightly soluble in cold water, more soluble in hot water, soluble in ethanol and acetone
Vapor Pressure: Not available
Density: Approximately 1.6-1.7 g/cm³
pH: Acidic in aqueous suspension
Flash Point: Not established; not flammable by conventional standards
Other Properties: Light sensitive, may discolor or degrade upon prolonged exposure to air and light
Chemical Stability: Stable under normal conditions of use and storage
Reactivity: Reacts with strong oxidants and reducing agents; can react with bases or acids with possible heat or gas release
Hazardous Reactions: May form hazardous decomposition products such as carbon monoxide and carbon dioxide on combustion or thermal decomposition
Conditions to Avoid: Exposure to light, high temperatures, moisture, air, sources of ignition
Incompatible Materials: Strong acids, strong bases, reducing and oxidizing materials
Acute Toxicity: Data limited; expected to have moderate oral toxicity based on analogue quinone compounds; direct inhalation may irritate the respiratory tract
Skin Corrosion/Irritation: Contact may lead to skin redness and irritation, especially with prolonged contact
Serious Eye Damage/Irritation: Dust causes moderate to severe eye irritation
Respiratory Sensitization: No specific data, but dust may trigger asthma or other respiratory irritation
Carcinogenicity: No listing by IARC, NTP, or OSHA; no data indicating carcinogenic risk at occupational exposures
Other Effects: Sensitization or allergic reactions possible on repeated exposure; prolonged high-level exposure may damage organs or tissue (based on general quinone toxicity)
Ecotoxicity: Compound is toxic to aquatic life based on chemical structure and similar quinone analogs; avoid release to aquatic environments
Persistence and Degradability: May persist in the environment, though breakdown can occur under certain physical or biological conditions
Bioaccumulative Potential: Expected to have low to moderate potential for bioaccumulation
Mobility in Soil: May be mobile, especially in waterlogged or acidic soils
Other Adverse Effects: Product has some potential to affect microorganisms and disrupt aquatic ecosystems if large-scale or multiple incidents occur
Waste Treatment Methods: Handle as hazardous chemical waste; do not dispose of down the drain or in regular trash
Disposal Containers: Use sealed, labeled chemical waste containers designed for reactive laboratory waste; ensure no cross-contamination
Special Disposal Precautions: Dispose through a licensed chemical waste contractor; follow federal, state, and local environmental regulations
Waste Codes: May fall under hazardous waste codes for toxic organic chemicals depending on jurisdiction
Contaminated Packaging: Dispose of containers as chemical waste, after thorough cleansing or destruction as required by local law
UN Number: Not specifically assigned; check local regulations before shipping
Classification for Transport: Not regulated as hazardous for transport under most international requirements, but treat as chemical, not consumer product
Proper Shipping Name: Chemical not otherwise specified, organic solid
Packing Group: Usually III or as determined by shipper based on packing method
Marine Pollutant: Not designated; avoid shipping with food or feedstuffs
Transport Precautions: Prevent spills or leaks, secure container to prevent shifting, provide SDS to carrier
OSHA Hazards: Classified as hazardous chemical; information required in workplace chemical safety programs
TSCA (USA): Included in Toxic Substances Control Act inventory
REACH (EU): Registration, Evaluation, Authorization and Restriction of Chemicals requirements apply if importing or manufacturing in the EU in significant quantities
Other Regulation: Subject to safety data and hazard communication requirements in most jurisdictions; subject to local chemicals regulation and workplace safety regulations
Labeling: Must clearly display hazard warnings, PPE requirements, supplier contact, and emergency procedures according to national and international standards
Additional Assessment: Internal reviews and updates required if new data on safety or toxicity becomes available; health surveillance for exposed workers remains good practice
