Product Name: Hydroquinone Bis(2-Hydroxyethyl) Ether
Chemical Family: Ether, Phenolic Compound
CAS Number: 104-38-1
Synonyms: Bis(2-hydroxyethyl)hydroquinone, Bis(2-hydroxyethyl)ether of hydroquinone
Recommended Use: Intermediate in the production of dyes, stabilizer in polymers, antioxidant in chemical processes
Manufacturer Information: Supplier contact details provided on container label
Emergency Contact: Emergency phone number available through local poison control center or listed hazardous materials authority
GHS Classification: Eye irritation, Skin irritation, Harmful if swallowed
Signal Word: Warning
Hazard Statements: Causes skin irritation, Causes serious eye irritation, Harmful if swallowed, Harmful to aquatic life with long-lasting effects
Pictograms: Exclamation mark, Environment
Precautionary Statements: Wash hands thoroughly after handling, Avoid release to environment, Wear protective gloves/protective clothing/eye protection/face protection, If swallowed: Call a poison center if you feel unwell, If on skin: Wash with plenty of water, If in eyes: Rinse cautiously with water for several minutes
Chemical Name: Hydroquinone Bis(2-Hydroxyethyl) Ether
CAS Number: 104-38-1
Concentration: ≥99% by weight
Impurities: Trace amounts of hydroquinone and other related ethers (less than 1%)
Additives: None known
General Advice: Seek immediate medical attention for any symptoms
Inhalation: Move person to fresh air. If symptoms persist, obtain medical attention
Skin Contact: Remove contaminated clothing and wash affected area thoroughly with soap and water for at least 15 minutes. If irritation occurs, consult a physician
Eye Contact: Rinse immediately with water for at least 15 minutes. Remove contact lenses. Seek medical attention if irritation occurs
Ingestion: Rinse mouth with water, do not induce vomiting. Get medical help if any discomfort or symptoms occur
Most Important Symptoms: Redness, irritation, possibly allergic skin reaction, abdominal discomfort if ingested
Notes to Physician: Treat symptomatically and provide supportive care
Suitable Extinguishing Media: Water spray, alcohol-resistant foam, dry chemical, carbon dioxide
Unsuitable Extinguishing Media: Direct water stream may spread fire
Specific Hazards Arising from Substance: Forms toxic gases under fire conditions including carbon monoxide and carbon dioxide
Protective Equipment for Firefighters: Wear full protective clothing, self-contained breathing apparatus
Special Fire-Fighting Procedures: Move containers from fire area if possible without risk, use water spray to keep fire-exposed containers cool, contain runoff to prevent environmental contamination
Personal Precautions: Wear chemical-resistant gloves, splash-proof goggles, appropriate respirator
Environmental Precautions: Prevent entry into sewers, drains, waterways; inform authorities if spillage reaches water systems
Methods for Cleanup: Absorb liquid with inert material such as sand or earth, collect in suitable containers for disposal. Wash spill area thoroughly after material pickup. Ventilate area well and avoid raising dust or aerosols. Use non-sparking tools for cleanup to avoid ignition risk
Handling: Use in well-ventilated areas, avoid breathing dust, fumes, or vapors. Avoid contact with skin, eyes, and clothing. Do not eat, drink, or smoke when using this product. Practice good hygiene by washing hands before breaks and after work
Storage: Keep container tightly sealed in a cool, dry, and well-ventilated place away from incompatible substances such as strong oxidizers, acids, and bases. Store in original packaging, properly labeled. Avoid exposure to direct sunlight, heat, or ignition sources. Maintain temperature between 15°C and 25°C for optimal shelf life
Occupational Exposure Limits: No established OSHA or ACGIH exposure limits; minimize exposure to lowest practicable level
Engineering Controls: Use local exhaust ventilation and other engineering controls to maintain airborne concentration below recommended exposure limits
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), safety goggles or face shield, laboratory coat or chemical apron, long pants, closed-toe shoes
Respiratory Protection: Use NIOSH-approved respirator if ventilation is inadequate or exposure limits are exceeded. Provide emergency eyewash and safety shower in the work area
Appearance: White to off-white crystalline solid
Odor: Faint, slightly phenolic
Odor Threshold: Not determined
pH: Not applicable (non-aqueous solid)
Melting Point / Freezing Point: 89°C to 93°C
Boiling Point: Decomposes before boiling
Flash Point: >150°C (closed cup)
Evaporation Rate: Not available
Flammability: May burn if exposed to fire
Upper/Lower Flammability Limits: Not available
Vapor Pressure: Negligible at room temperature
Vapor Density: Not available
Relative Density: Approximately 1.31 (water = 1)
Solubility in Water: Moderate
Partition Coefficient (n-octanol/water): Not available
Auto-ignition Temperature: Not established
Decomposition Temperature: >180°C
Viscosity: Not applicable (solid)
Chemical Stability: Stable under normal conditions of storage and use
Reactivity: Not reactive under standard handling conditions
Conditions to Avoid: Excessive heat, open flames, direct sunlight, incompatible materials
Incompatible Materials: Strong oxidizing agents, strong acids, strong bases
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, potentially toxic phenolic compounds
Hazardous Polymerization: Does not occur
Likely Routes of Exposure: Skin contact, eye contact, ingestion, inhalation of dust
Acute Toxicity: Oral LD50 (rat): 1650 mg/kg; skin contact causes moderate irritation
Skin Corrosion/Irritation: Causes skin irritation in rabbits and may trigger allergic responses
Serious Eye Damage/Eye Irritation: Eye exposure produces moderate to severe irritation
Respiratory or Skin Sensitization: May cause allergic reaction with repeated skin contact
Carcinogenicity: No data from IARC, NTP, or OSHA classifying as carcinogen
Reproductive Toxicity: No specific data available
Aspiration Hazard: Not expected to pose inhalation hazard as dust, but minimization encouraged
Chronic Effects: Repeated or prolonged contact may cause dermatitis or allergic reactions
Ecotoxicity: Potentially harmful to aquatic organisms. Inhibits bacterial growth at moderate concentrations
Persistence and Degradability: Expected to be partially biodegradable, but persistence in aquatic environments possible
Bioaccumulative Potential: Low bioaccumulation expected based on molecular structure
Mobility in Soil: Moderate mobility due to water solubility; risk of contaminating surface water
Other Adverse Effects: May cause oxygen depletion in aquatic systems at higher concentrations
Waste Treatment Methods: Dispose in accordance with local, regional, and national regulations. Do not discharge into drains or environment
Container Disposal: Empty containers must be cleaned before reuse or recycling. Puncture and triple rinse drums or bottles, then dispose as hazardous waste
Special Precautions: Incinerate waste only in facilities suitable for organic chemical destruction. Always handle residues with care to avoid contact or environmental release
UN Number: Not regulated for ground, air, or waterways under current international shipping guidelines
Proper Shipping Name: Chemical, Not Otherwise Specified
Hazard Class: Non-hazardous for transport; check local requirements
Packing Group: None assigned
Labeling Requirements: No specific DOT, IATA, or IMDG labels unless mixed with more hazardous substances
Special Precautions: Handle with care to prevent container damage, avoid spills during transfer, keep separated from foodstuffs and strong oxidizers in transport vehicles
US OSHA: Not specifically regulated
TSCA (US): Listed on Toxic Substances Control Act Inventory
EU REACH: Pre-registered; compliance with restrictions and registration framework recommended
Canada DSL/NDSL: May appear on Domestic Substances List
SARA Title III: Not subject to emergency planning or notification requirements
California Proposition 65: Not listed
Other International Regulations: Refer to country-specific chemical inventory or safety legislations for detailed requirements. Consult workplace safety authority for further guidance on use, storage, and disposal practices
