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Product Name: Hexaethyl Tetraphosphate and Compressed Gas Mixture
Chemical Family: Organophosphate Pesticide and Inert Compressed Gas Mixture
Use: Insecticide formulations, fumigant research, pest control environments
Manufacturer/Supplier: Registered chemical distributor, emergency contact provided on request
Contact Information: 24-hour emergency phone and on-site safety resources
CAS Number: Hexaethyl Tetraphosphate (78-40-0), Gas component varies (e.g., Nitrogen, Argon, CO2, etc.)
UN Number: 1610 for Hexaethyl Tetraphosphate, UN for gas varies by component
Synonyms: HETP, TEP, Organophosphate mixture
GHS Classification: Acute Toxicity Oral Category 2, Skin Corrosion/Irritation Category 2, Eye Damage Category 1, Specific Target Organ Toxicity - Single Exposure Category 2, Gases Under Pressure
Signal Word: Danger
Hazard Statements: Fatal if swallowed, causes skin and severe eye burns, affects respiratory system, asphyxiation risk from compressed gas, may damage nervous system
Pictograms: Skull and crossbones, corrosion, gas cylinder, exclamation mark
Precautionary Statements: Keep away from food and feed, avoid breathing vapors or gas, wear protective clothing, do not eat or drink while handling, use only outdoors or well-ventilated areas
Hazard Routes: Inhalation, ingestion, skin absorption
NFPA Ratings: Health 4, Flammability 1, Reactivity 1, Special notice “use full PPE”
Chronic Effects: Prolonged exposure linked to neurological symptoms, possible reproductive toxicity
Chemical Name: Hexaethyl Tetraphosphate
Concentration: 45–60% (by weight) of the total mixture
Chemical Name: Compressed Gas (Nitrogen, Argon, or CO2)
Concentration: Balance to 100% in pressurized container
Common Impurities: None reported above 0.1% threshold
Hazardous Components: Hexaethyl Tetraphosphate (CAS: 78-40-0), gas (CAS depends on type used)
Stabilizing Additives: None present
Other Ingredients: Non-hazardous stabilizing agents (<0.2%)
Inhalation: Remove victim to fresh air immediately, provide oxygen if breathing is difficult, call emergency services
Skin Contact: Flush affected skin with large amounts of running water, remove contaminated clothing, wash thoroughly with soap, seek medical attention for irritation
Eye Contact: Rinse eyes with water for at least 20 minutes, lifting eyelids occasionally, seek immediate medical advice
Ingestion: Do not induce vomiting, rinse mouth thoroughly, keep affected person calm, immediate hospital transfer necessary
Most Important Symptoms: Nausea, dizziness, headache, blurred vision, respiratory difficulty, potential loss of consciousness
Notes for Physicians: Administer atropine sulfate and pralidoxime as antidotes, monitor respiratory support, treat symptomatically
Suitable Extinguishing Media: Foam, dry powder, carbon dioxide, water spray for small fires
Unsuitable Media: Do not use water in direct stream — risk of chemical reaction
Hazardous Combustion Products: Phosphorus oxides, corrosive fumes, ethyl phosphates, possible carbon monoxide
Protection for Firefighters: Use self-contained breathing apparatus and full protective gear, approach cautiously from upwind
Special Procedures: Isolate area, cool tanks with water spray, prevent run-off--fire may evolve toxic vapors
Explosion Risk: Pressurized cylinders may explode at high temperatures
Flash Point (HETP): Not flammable, but supports combustion
Temperature Sensitivity: Mixture in cylinder sensitive to heat, risk of cylinder rupture
Personal Precautions: Evacuate unnecessary personnel, ventilate area, wear chemical-resistant clothing and supplied-air respirator
Environmental Precautions: Prevent spillage from entering drains, sewers, or waterways; notify local authorities if large amounts enter environment
Methods for Clean-up: Use inert absorbents (e.g., sand, earth), collect into secure containers, label for proper disposal, decontaminate affected area with dilute sodium hydroxide
Precautionary Equipment: Nitrile gloves, chemical splash goggles, full face shield, respiratory protection
Emergency Procedures: Stop leak if safe to do so, remove ignition sources, contain with dikes
Disposal of Clean-up Materials: Place in hazardous waste disposal drum, treat as regulated chemical waste
Safe Handling Advice: Use only within fume hood or with local exhaust, avoid breathing vapors, do not eat, drink, or smoke in handling areas, wear full PPE including gloves and respirator
Conditions for Safe Storage: Store in tightly sealed pressurized cylinders, label all containers clearly, keep in cool, dry, well-ventilated facility away from sunlight and sources of heat or ignition
Incompatibilities: Avoid acids, bases, reducing agents, strong oxidizers; prevent exposure to flame or spark
Storage Temperature: Maintain vertical cylinder position, keep between 5–25°C
Storage Area Requirements: Restrict access, install leak and gas detection systems, secure upright and segregated from combustibles
Shelf Life: Monitor regularly, use FIFO system, chemical degradation increases risk with prolonged storage
Occupational Exposure Limits: Hexaethyl Tetraphosphate (OSHA PEL: 0.05 mg/m³ TWA); compressed gases (asphyxiation risk, OEL varies per gas)
Engineering Controls: Use chemical fume hoods, explosion-proof ventilation, gas detection monitors
Personal Protective Equipment: Nitrile or butyl rubber gloves, chemical-resistant suit, positive-pressure respirator, face shield, chemical splash goggles
Hygiene Measures: Wash hands thoroughly after handling, remove contaminated clothing before breaks or leaving work
Environmental Controls: Ensure well-ventilated work area, emergency eyewash and shower stations in immediate work zone
Work Practice Controls: Keep work tasks brief, limit number of personnel, maintain regular safety training for handlers
Appearance: Clear to yellowish liquid in compressed gas mixture, packaged under pressure in steel cylinders
Odor: Slightly fruity or pungent, characteristic of organophosphates
pH: Not determined (non-aqueous mixture)
Melting/Freezing Point: Below -30°C (HETP component)
Boiling Point: 85–95°C (HETP component), pressure dependent for gas
Flash Point: Non-flammable mixture
Evaporation Rate: Slow (liquid component)
Explosive Limits: Depends on gas — consult specific gas MSDS
Solubility: Slightly soluble in water, miscible with organic solvents
Vapor Pressure: Elevated due to gas mixture in cylinder
Specific Gravity: About 1.14 (liquid)
Partition Coefficient: Not applicable
Autoignition Temperature: Not self-igniting
Decomposition Temperature: Above 200°C
Viscosity: Low to moderate
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: May react violently with acids, bases, oxidizers; risk of hazardous decomposition if unstable
Hazardous Reactions: Produces toxic phosphoric acids or oxides, flammable gases react with strong oxidants
Conditions to Avoid: Extreme temperatures, exposure to open flame, impact or physical shock to cylinders
Materials to Avoid: Acids, alkalis, halogens, strong oxidizing agents
Hazardous Decomposition Products: Ethyl phosphates, phosphoric acid, phosphine gas under fire condition
Polymerization: No hazardous polymerization expected
Acute Toxicity: LD50 (oral, rat): 1–5 mg/kg for HETP, highly toxic by inhalation and ingestion; gas component causes asphyxia at high concentrations
Symptoms of Exposure: Nausea, vomiting, abdominal cramps, muscle weakness, respiratory depression, pinpoint pupils, seizures at severe exposure
Chronic Effects: Impaired neurological function, memory loss, weakness, peripheral neuropathy
Carcinogenicity: Not classified as carcinogenic by IARC/OSHA/NTP
Mutagenicity: No data, precaution due to chemical reactivity
Reproductive Toxicity: Evidence of developmental toxicity in animal studies with repeated exposure
Routes of Exposure: Inhalation, skin absorption, oral intake
Target Organs: Central nervous system, respiratory tract, liver, kidneys
Aspiration Hazard: Severe if ingested and enters airways
Environmental Fate: Highly toxic to aquatic life, non-persistent with rapid hydrolysis in water but breakdown products also hazardous
Persistence and Degradability: HETP degrades in soil and water within days but creates toxic metabolites
Bioaccumulative Potential: Low for parent compound; breakdown products may accumulate
Mobility in Soil: Moderate, especially for liquid component
Aquatic Toxicity: Acute LC50 values for freshwater fish: <1 mg/L
Other Adverse Effects: Toxic to bees and beneficial insects, risk to non-target wildlife
Effect on Sewage Treatment: Hazardous, must not be disposed in general waste systems
Waste Handling: Collect liquid and gas residuals in labeled hazardous waste drums, do not contaminate with domestic or general lab waste
Disposal Methods: Incinerate liquid residues in approved chemical incinerators, return gas bottle to supplier if possible or vent only using approved scrubber systems
Container Disposal: Triple rinse and puncture empty cylinders before landfilling, comply with all hazardous waste regulations
Precautions: Avoid spillage, monitor for contamination, compliance with local hazardous waste transport laws
Regulatory Considerations: Notify licensed hazardous waste carrier, keep detailed records of transport and final disposal
UN Number: 1610 (Hexaethyl Tetraphosphate), number for compressed gas per specific component
Proper Shipping Name: Hexaethyl Tetraphosphate and Compressed Gas Mixture
Transport Hazard Class: 6.1 (Toxic substances); gas class (2.2, as applicable)
Packing Group: I (High danger)
Marine Pollutant: Yes (toxic to aquatic environment)
Special Precautions: Transport in upright, secured containers with full hazard labels and emergency documentation
Regulatory Requirements: Comply with DOT, IMDG, and IATA rules for hazardous material transport
EMS Number: F-A, S-A (IMDG)
Transport Labeling: Poison, gas, and marine pollutant marks required
OSHA Hazardous Chemical: Listed
TSCA Status: Registered as a pesticide ingredient, subject to reporting
SARA Title III: Section 302 (EHS, Hexaethyl Tetraphosphate listed), Section 313 (toxic release inventory)
RCRA Status: Regulated hazardous waste (P-list and U-list)
CERCLA Reportable Quantity: 10 lbs (Hexaethyl Tetraphosphate)
California Proposition 65: Listed for potential reproductive effects
International Inventories: Listed on EC, DSL, and PICCS chemical inventories
Restrictions: Use restricted or banned in some jurisdictions, handler certification required in regulated markets
Labelling Requirements: GHS, DOT, EPA signal words and pictograms
