Editorial Commentary: The Full Story Behind 3,3,4,4,5,5,6,6,6-Nonafluorohexyl 2-Methylprop-2-Enoate and its Material Safety Data Sheet

Identification

Chemical Name: 3,3,4,4,5,5,6,6,6-Nonafluorohexyl 2-methylprop-2-enoate
Chemical Family: Fluorinated acrylates
Description: Clear, colorless liquid, carries a faint acrylate odor, often used in specialty polymer applications for its resistance to water, oils, and stains.
Common Uses: Surface treatments, coatings, performance polymers, textile finishing, and electronics industries rely on its properties.
Chemical Abstracts Service (CAS) Number: 214255-61-5

Hazard Identification

Hazard Class: Skin and eye irritant, may be harmful if inhaled or ingested.
Key Risks: Potential for skin and respiratory sensitization, vapors and mist may aggravate respiratory issues, may cause burns or severe discomfort upon contact with eyes or mucous membranes.
Physical Dangers: Flammable liquid and vapor, presents additional risks in heated or confined environments.
Chronic Hazards: Prolonged or repeated exposures could sensitize skin or trigger allergic reactions, common for acrylate compounds.
Environmental Risks: Persistent, bioaccumulative, eco-toxic to aquatic life, low degradability.

Composition / Information on Ingredients

Active Chemical: 3,3,4,4,5,5,6,6,6-Nonafluorohexyl 2-methylprop-2-enoate
Purity: Commercial preparations typically above 95%.
Impurities: Minor traces of related fluorinated analogs, possible residual monomers or byproducts from synthesis.
Additives: No standard stabilizers, some batches may include proprietary inhibitors to prevent unwanted polymerization during shipping or storage.

First Aid Measures

Inhalation: Remove to fresh air, monitor for cough, difficulty breathing, or dizziness; medical attention recommended if symptoms persist.
Skin Contact: Immediate rinsing with water, soap is effective for decontamination; persistent irritation calls for medical review.
Eye Contact: Flush eyes with water, lifting eyelids occasionally; seek medical help if discomfort continues.
Ingestion: Rinse mouth, avoid induced vomiting, contact medical professional immediately; product may cause burns or gastric distress.

Fire-Fighting Measures

Extinguishing Media: Alcohol-resistant foam, dry chemical, or carbon dioxide recommended.
Combustion Products: Fire releases irritating fluorinated compounds, hydrogen fluoride gas in some cases, acrid acrylate smoke, and carbon monoxide.
Precautions: Self-contained breathing apparatus and full protective gear reduce risks for responders.
Fire Risks: Vapors travel with air currents, ignition possible far from liquid source; keep sources of ignition away.

Accidental Release Measures

Personal Protection: Wear chemical-resistant gloves, goggles, protective clothing, and adequate respiratory protection where vapor exposure is a concern.
Spill Response: Evacuate unnecessary personnel, ventilate area, dike to contain spill, use inert absorbent materials such as sand or vermiculite.
Cleanup: Transfer spilled liquid to waste containers, avoid direct contact.
Prevention: Isolate area to prevent environmental release; avoid runoff into waterways or sewer systems.
Disposal: Handle as hazardous chemical waste—label, store separately, and arrange for licensed hazardous disposal.

Handling and Storage

Handling: Work in fume hoods or ventilated spaces, always keep away from sparks, open flames, or static discharge sources.
Storage: Store away from heat, direct sunlight, strong oxidizers, and food-related facilities. Maintain containers tightly sealed in dedicated chemical storage lockers.
Incompatible Materials: Alkalis, strong acids, and other energetic chemicals may trigger uncontrolled polymerization or violent reactions.
General Practice: Use only with trained personnel, maintain spill-control materials nearby, follow regular inspection schedules for storage vessels.

Exposure Controls and Personal Protection

Exposure Limits: No established occupational exposure limits—follow general local regulations for acrylates and perfluorinated substances.
Respiratory Protection: Organic vapor cartridge respirators in areas of insufficient ventilation.
Eye Protection: ANSI-rated splash-proof safety goggles.
Skin Protection: Nitrile or multi-layered barrier gloves, lab coat, chemical-resistant apron for large-scale handling.
Engineering Controls: Local exhaust, negative-pressure ventilation, and air monitoring equipment keep airborne concentrations low.
Hygiene Measures: Remove and wash contaminated garments, avoid hand-to-mouth or skin-to-skin transfer.

Physical and Chemical Properties

Appearance: Clear, colorless liquid
Molecular Formula: C9H7F9O2
Molecular Weight: 296.13 g/mol
Boiling Point: Above 150°C—higher than most base acrylates, due to heavy fluorination.
Flash Point: Roughly 90°C, verify each lot.
Odor: Faint, characteristic acrylate scent.
Miscibility: Low solubility in water, miscible in ethers, acetone, some alcohols.
Density: Typically over 1.2 g/cm³.
Vapor Pressure: Moderate, not as volatile as lighter acrylates; ventilated storage still required.

Stability and Reactivity

Chemical Stability: Stable under recommended storage, sensitive to heat, light, and certain catalysts.
Polymerization: May occur with loss of inhibitor, exposure to heat, or contamination by peroxides or acids.
Hazardous Reactions: Reacts with strong oxidizing agents, bases, reducing agents; generates hazardous fumes if overheated.
Decomposition Products: Decomposition produces toxic fluorinated fragments and acrylate monomers, especially at high temperatures.

Toxicological Information

Acute Exposure: Skin contact leads to pain, redness, possible dermatitis; inhalation results in respiratory tract irritation. Eyes react strongly, with tearing, burning, potential temporary vision changes.
Chronic Exposure: Frequent or extended contact causes skin cracking, allergic reactions typical with acrylates.
Systemic Effects: Inhalation at high vapor concentrations affects lungs, fatigue and headache observed.
Carcinogenicity/Mutagenicity: Data limited; perfluoroalkyl substances have raised health concerns, so limit unnecessary exposures.

Ecological Information

Persistence: Highly persistent, non-biodegradable; fluorinated tail remains in aquatic and terrestrial environments for decades.
Aquatic Toxicity: Toxic to aquatic organisms even at low parts-per-billion; contribution to bioaccumulation in food chains.
Long-Term Impacts: Disrupts microbial and plant development, builds up in sediments.
Mobility: Mobile in water systems due to low adsorption, potential for groundwater contamination.

Disposal Considerations

Preferred Disposal: Incineration at approved hazardous waste facilities, with scrubbing systems for fluorinated emissions.
Do Not: Discharge to surface water, sewer, or landfill.
Regulated Waste: Subject to controls for organic perfluorinated pollutants; manifest and report disposal under hazardous material rules.
Minimize Waste: Use only what is necessary, recover or recycle where practical.

Transport Information

Shipping Status: Classified as hazardous under shipping codes—flammable and toxic, subject to specific packaging and documentation.
Key Restrictions: Packaging must prevent leakage; labels should identify fire, health, and environmental risks.
Transport Hazards: Spills or leaks during transit risk fire and contamination, drivers and handlers need full information and emergency equipment.

Regulatory Information

Global Restrictions: International inventories may list this substance for hazard reporting and control.
Regulatory Bodies: Listed under frameworks such as REACH in Europe, TSCA in the United States, potentially subject to restrictions for PFAS.
Local Regulations: Additional permits and recordkeeping often apply in high-use sectors or environmentally sensitive zones.
Recent Developments: Tightening policies on fluorinated substances drive interest in substitutes and stricter waste controls.