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Product Name: 2,2,4,4-Tetramethyl-1,3-Cyclobutanediol
SYNONYMS: TMCD, CBDO
Chemical Family: Diol, Cyclobutane Derivative
Recommended Use: Chemical intermediate in polymer production, modifiers in coatings, and specialty plastics.
Manufacturer/Supplier: Multiple specialty chemical suppliers provide this compound for industrial and laboratory use.
Contact Information: Emergency numbers typically appear on the product label or company website for fast access.
Chemical Formula: C8H16O2
CAS Number: 3010-96-6
Identifiers: UN number and EC number depend on local regulation and trade practices.
Classification: Not classified as hazardous under GHS for most handling situations, but always observe industrial hygiene.
Signal Word: None usually required unless state or regional law dictates.
Hazard Statements: Dust or vapor inhalation could cause temporary respiratory discomfort; skin or eye contact may lead to irritation for sensitive individuals.
Precautionary Statements: Wear standard protection during all manipulations. Keep compound from entering groundwater or soil unnecessarily.
Hazard Symbol(s): None normally used; risk remains low if common sense is practiced.
Chemical Composition: Pure substance
Main Constituent: 2,2,4,4-Tetramethyl-1,3-Cyclobutanediol
Impurities/Stabilizing Additives: Minimal; levels, if present, stay below industrial significance.
Concentration: Above 99% in most commercial batches
CAS Number: 3010-96-6
Molecular Weight: 144.21 g/mol
Eye Contact: Flush immediately with plenty of clean water for at least 15 minutes; remove contact lenses if used. Persistent irritation calls for medical attention.
Skin Contact: Wash exposed area with soap and water. Remove contaminated clothing and shoes. If irritation appears or continues, see a physician.
Inhalation: Move to fresh air promptly. Breathe normally. If discomfort grows or breathing is labored, seek professional healthcare.
Ingestion: Rinse mouth thoroughly. Consume water if possible and safe. Never give anything by mouth to an unconscious person. Medical help should be found quickly if large quantities are swallowed, even though risk remains low.
Most Important Symptoms: Eye or respiratory irritation in overexposure scenarios; mild skin effects sometimes noted.
Suitable Extinguishing Media: Use water spray, dry chemical, CO2, or foam for localized fires. Stop the fire source if it’s safe.
Unsuitable Media: Direct water stream can spread powder in a large spill.
Fire Hazards: Vapors may cause mild headache or nausea if heated to decomposition. Thermal breakdown yields carbon oxides.
Explosion Hazards: Fine particulate dust could generate an air-dust explosion if dispersed in confined space and ignited.
Protective Equipment: Firefighter turnout, self-contained breathing gear.
Special Instructions: Cool adjacent materials and containers, move people away from downwind area.
Personal Precautions: Don gloves and eye protection before tackling any spill. Sweep up with care to avoid dust.
Protective Equipment: Respirator in dusty zones. Gloves and goggles.
Clean-Up Procedures: Sweep or vacuum material into chemical waste drums for disposal, keeping dust buildup to a minimum.
Spill Response: Small amounts may get diluted and washed with water; larger amounts require careful stockpiling and removal.
Preventive Measures: Block the entry into sewers, drains, or water bodies to keep effect local.
Environmental Precautions: Store residue in labeled containers; follow established waste guidelines.
Safe Handling: Handle in dry, well-ventilated space. Mechanical handling works best if dust cannot drift onto exposed skin or into eyes.
Storage Requirements: Store in cool, dry, and tightly sealed drums or bags; keep away from oxidizers. Place out of direct sunlight.
Incompatible Materials: Avoid strong acids, strong bases, and oxidizing agents. Store away from moisture to preserve material quality.
Packaging Materials: HDPE, steel, or fiber drums fitted with sealed liners work best.
Personal Hygiene: Wash thoroughly after handling, especially before eating or drinking.
Occupational Exposure Limits: No established OSHA or ACGIH limits, but attention to dust levels is wise.
Engineering Controls: Local exhaust or general room ventilation keeps airborne dust low.
Personal Protective Equipment: Tight-fitting chemical goggles, nitrile gloves, and dust mask in bulk handling. Lab coats and closed shoes add another layer.
Respiratory Protection: NIOSH-approved respirator when airborne particulate is likely.
Eye Protection: Wrap-around safety glasses obvious choice.
Skin Protection: Protective gloves and overalls.
Hygiene Measures: Always wash hands thoroughly after contact; keep food away from work zones.
Appearance: White to off-white crystalline solid.
Odor: Faint, almost undetectable.
Odor Threshold: Not defined.
pH: Data not specified for solid.
Melting Point: About 146–151°C.
Boiling Point: Decomposes before boiling.
Flash Point: Not readily combustible in regular settings.
Evaporation Rate: Not volatile at room temperature.
Vapor Pressure: Practically zero at ambient temperatures.
Solubility: Slight in water, more soluble in polar organic solvents.
Vapor Density: Not applicable due to low volatility.
Density: Around 1.1–1.2 g/cm3 at 25°C.
Viscosity: Not relevant unless used in molten state.
Partition Coefficient: Log Kow: Estimated low due to polar groups.
Explosive Properties: None under normal use, fine dust may ignite.
Oxidizing Properties: Lacks strong oxidizing or reducing actions.
Chemical Stability: Stable under typical industry and laboratory use.
Conditions to Avoid: Extreme heat, sparks, open flame; do not allow the compound to dry and disperse as fine dust in air.
Incompatible Materials: Acids, bases, and oxidizers could break down or react with the product.
Decomposition Products: Carbon monoxide, carbon dioxide, and possibly small traces of other organic vapors if severely burned.
Hazardous Reactions: Polymerization risk not reported; avoid contact with chemicals known to cause strong exothermic reactions.
Acute Toxicity: Low oral and dermal toxicity in experimental animals. Large doses may spark mild gastrointestinal upset.
Chronic Effects: No clear evidence for mutagenicity, carcinogenicity, or reproductive toxicity in available animal data.
Routes of Exposure: Inhalation of dust, skin contact, ingestion.
Symptoms: Irritation to mucous membranes may occur if inhaled in excess; rare cases of mild dermatitis have been seen after direct contact.
Sensitization: No strong sensitizing effects found.
Other Data: No evidence of long-term health effects from normal, intermittent workplace exposure.
Ecotoxicity: Not judged acutely toxic to aquatic or terrestrial life at concentrations normally found in wastewater.
Persistence and Degradability: Slow breakdown in environment; biodegradation occurs but depends on site conditions.
Bioaccumulative Potential: Low; compound not predicted to build up in aquatic organisms.
Mobility: Remains mostly bound to soil or sediments if released.
Other Adverse Effects: Environmental risk comes only if large amounts spill directly into nature, so containment always benefits the ecosystem.
Disposal Methods: Collect residue in clearly marked containers for specialist disposal or high-temperature incineration.
Contaminated Packaging: Clean before recycling; otherwise, dispose as chemical waste.
Special Requirements: Disposal must honor local regulations for solid organic compounds. Never dump into open water or common trash streams.
Sewage Disposal: Discourage down-the-drain disposal.
UN Number: Not regulated as hazardous for road, rail, air, or marine when appropriately packed.
Proper Shipping Name: 2,2,4,4-Tetramethyl-1,3-Cyclobutanediol
Hazard Class: Not classed as hazardous cargo.
Packing Group: None assigned.
Environmental Hazards: Not marine pollutant.
Special Precautions: Use labeled, sealed containers; prevent package breakage during handling or transit.
International Inventories: Many national chemical agencies include this compound in their inventories (e.g., US TSCA, EU REACH, Canadian DSL, Australian AICS).
SARA Title III: Not listed as extremely hazardous.
OSHA: Not on occupational hazard lists.
Right to Know: Some states include the compound in general inventories.
Labeling: Ensure product labels clearly state chemical name, manufacturer data, and applicable warnings.
Regulatory Restrictions: No special import, export, or usage restrictions recognized beyond standard industrial chemical controls.
Other Regulations: Users should track local regulatory updates since regional authorities occasionally update lists or advice based on new research.
