Product Name: 2,3-Diethyl Pyrazine
Chemical Synonyms: 2,3-diethyl-1,4-diazine
CAS Number: 15707-23-0
Recommended Use: Aroma chemical, flavor additive
Supplier/Manufacturer: Please refer to supplier label or packaging
Contact Details: Emergency phone numbers can be found on packaging; company-specific contact recommended for workplace inventories
GHS Classification: Flammable liquid, Category 3; Acute toxicity, Oral and Dermal Category 4
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor; harmful if swallowed or in contact with skin
Pictograms: Flame, Exclamation mark
Route of Entry: Inhalation, ingestion, dermal and eye contact
Possible Health Effects: Irritation to skin and eyes, nausea, dizziness, headache after inhalation or ingestion; may cause vomiting if a large quantity is swallowed
Environmental Hazards: Toxic to aquatic organisms; potential for adverse effects on soil health after spills
Chemical Name: 2,3-Diethyl Pyrazine
Percent Purity: 95% or higher
CAS No.: 15707-23-0
Molecular Formula: C8H12N2
Other Components: Trace impurities may include related pyrazine compounds, not regarded as significant hazards by conventional assessment
Mixture Description: Not a mixture; single pure organic compound
Inhalation: Move person to fresh air; monitor for breathing, administer oxygen if trained
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with water for 15 minutes, consult medical attention if symptoms persist
Eye Contact: Rinse with water for several minutes; remove contact lenses if present and easy to do; seek medical help if irritation continues
Ingestion: Rinse mouth, drink water; do not induce vomiting; seek medical advice if significant quantity ingested or symptoms develop
Symptoms to Watch For: Redness, irritation, headache, nausea, dizziness, stomach upset
Advice for Medical Responders: Treat symptomatically, monitor airway and fluid balance
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical, carbon dioxide, water spray (only for cooling containers; avoid direct stream on burning liquid)
Hazardous Combustion Products: Produces nitrogen oxides, carbon oxides, and possible toxic vapors
Firefighter Protection: Full protective clothing including self-contained breathing apparatus
Unusual Fire Hazards: Vapors may build up and travel, creating risk of flashback ignition; containers may rupture explosively if heated
Special Procedures: Dike runoff to prevent entry into waterways, avoid inhaling combustion gases, use water spray to cool exposed tanks
Personal Precautions: Wear protective gloves, goggles, and chemical-resistant clothing; ensure adequate ventilation; remove any ignition sources
Environmental Measures: Prevent spills from entering drains or waterways; notify authorities if significant runoff threatens environment
Spill Cleanup Methods: Absorb with dry sand, earth, vermiculite or inert material; use non-sparking tools; shovel waste into labeled, sealable containers; wash contaminated area with water after removal
Cleanup Crew Recommendations: Use respiratory protection if vapor levels exceed exposure guideline, avoid direct contact with material or dust
Safe Handling Advice: Ground or bond containers before transfer; keep away from open flames, hot surfaces, and other ignition sources; avoid breathing vapors or allowing contact with skin and eyes; keep containers tightly closed when not in use
Storage Conditions: Store in a tightly sealed container in a cool, well-ventilated area, out of sunlight; segregate from strong oxidizers, acids, and open flames; keep storage area clear of incompatible materials
Specific Use Considerations: Only use in areas with local exhaust ventilation; maintain good hygiene practices by washing hands after handling
Exposure Limits: No occupational exposure limits established specifically; use limits for structurally similar pyrazines if available
Engineering Controls: Ventilation with explosion-proof fans or hoods, safety showers nearby, eyewash stations
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), safety glasses, face shield, light chemical splash apron
Respiratory Protection: Use a NIOSH-approved organic vapor respirator in case of insufficient ventilation or risk of inhalation
Environmental Controls: Avoid accidental discharge into water systems; secondary containment for large quantities
Physical State: Liquid
Appearance: Colorless to pale yellow
Odor: Strong, roasted, nutty, earthy aroma
Odor Threshold: Low; detectable at ppb levels
pH: Not applicable (organic liquid)
Melting Point: -39°C
Boiling Point: 183–185°C
Flash Point: 56°C (closed cup)
Evaporation Rate: Moderate
Flammability (solid/gas): Not applicable
Upper/Lower Flammability or Explosive Limits: Data not precisely known; similar pyrazines 1–9% by volume in air
Vapor Pressure: 0.2 mm Hg at 25°C
Vapor Density: >1 (air = 1)
Relative Density: 0.98–1.01 g/cm³ at 20°C
Solubility: Slightly soluble in water, readily soluble in ethanol and common organic solvents
Partition Coefficient (Log Kow): Estimated 2.0–2.5
Autoignition Temperature: Not officially measured
Decomposition Temperature: Above boiling point
Chemical Stability: Stable under recommended storage and handling conditions
Incompatibility: Strong oxidizers, acids, sources of ignition
Hazardous Decomposition: Thermal breakdown yields nitrogen oxides, carbon monoxide, carbon dioxide
Reactivity Notes: May form flammable vapor–air mixtures; static discharge may ignite vapor
Polymerization: Will not occur under normal handling
Acute Toxicity Estimates (ATE): Oral LD50 (rat): approx. 300–2000 mg/kg (range from similar pyrazines)
Dermal LD50 (rabbit): Not specifically tested, expect moderate toxicity
Inhalation: Vapors may irritate airways, dizziness, nausea if concentration is high
Skin Irritation: Mild to moderate irritation possible on prolonged contact
Eye Irritation: Mild irritant
Chronic Effects: No carcinogenic, mutagenic, or teratogenic data identified for this specific compound
Target Organs: Skin, eyes, central nervous system
Sensitization: Unlikely from animal or reported human data
Aquatic Toxicity: No official data available, use caution due to potential harm to aquatic invertebrates such as Daphnia
Environmental Fate: Biodegradable, moderate to slow in soil or water environments; potential for bioaccumulation due to partitioning coefficients
Mobility: Slight in soil, possible surface runoff after large spills
Persistence: Degrades in sunlight and through microbial activity; specific half-lives not measured
Bioaccumulative Potential: Moderate, based on log Kow estimates
Other Hazards: High flavor intensity may affect aquatic or terrestrial organisms if released in bulk
Waste Treatment Methods: Incineration in chemical incinerator with afterburner and scrubber recommended; do not allow into sewers or watercourses
Container Disposal: Rinse empty containers with water, then puncture and dispose in accordance with local or national regulations
Special Instructions: Avoid landfill disposal for liquid or contaminated absorbents; consult local authorities for hazardous waste designation
UN Number: UN 1993
Proper Shipping Name: Flammable liquid, n.o.s. (2,3-Diethyl Pyrazine)
Transport Hazard Class: 3 (Flammable Liquid)
Packing Group: III
Labels: Flammable Liquid
Marine Pollutant: Not listed, but exercise care
Special Transport Precautions: Keep containers tightly closed and upright, avoid heat, secure from tipping
Bulk Transport: Comply with ADR/RID/IMDG/IATA requirements as applicable
Inventory Listings: Registered in US TSCA, EU REACH (pre-registered/exempt or notified), AICS (Australia), DSL (Canada)
Warning Label Required: Flammable, Harmful
OSHA Status: Considered hazardous under OSHA regulations
SARA Title III: Not specifically listed; reportable in case of substantial release due to flammable/toxic potential
California Proposition 65: Not on the list
Other Regulations: Handle in accordance with all applicable national, state, and local regulations relating to chemical safety, reporting, and emergency preparedness
