Product Name: 2,5-Dimethyl Pyrazine
Chemical Formula: C6H8N2
CAS Number: 123-32-0
Molecular Weight: 108.14 g/mol
Synonyms: 2,5-Dimethylpyrazine, Pyrazine, 2,5-dimethyl-
Recommended Use: Flavoring agent, chemical intermediate
Manufacturer Details: Listed on supplier invoice or packaging, as some sources come from specialty chemical providers
Contact Information: Provided by manufacturer, including phone, fax, and emergency contact
Emergency Telephone Number: Typically provided by local poison control center or the supplier
Classification: Combustible solid, irritant
Hazard Statements: May cause skin and eye irritation; inhaling dust or vapors can cause respiratory discomfort; harmful if swallowed in large quantities
Signal Word: Warning
Pictograms: Exclamation mark for irritant; no acute toxicity symbol
Precautionary Statements: Avoid contact with eyes, skin, and clothing; use in a well-ventilated area; keep away from ignition sources; do not eat, drink, or smoke while handling; wash hands thoroughly after handling
Other Dangers: Combustible; dust may form explosive mixtures with air in processing areas; do not allow dust to accumulate
Chemical Name: 2,5-Dimethyl Pyrazine
Concentration: 100%
CAS Number: 123-32-0
Impurities or Stabilizing Additives: Not usually present above reporting thresholds; trace amounts possible depending on manufacturing lot, details should be requested directly from supplier
Eye Contact: Flush eyes gently with water for at least 15 minutes; remove contact lenses if present; seek medical advice if irritation or pain continues
Skin Contact: Wash skin with plenty of soap and water; seek attention if redness or irritation resists washing
Inhalation: Move person to fresh air; keep warm and at rest; call a doctor if breathing feels difficult or symptoms persist
Ingestion: Rinse mouth with water; do not induce vomiting; drink water if alert; get medical assistance if feeling unwell
Recommended Immediate Medical Attention: Treat symptomatically, monitor for irritation of respiratory or digestive tract
Suitable Extinguishing Media: Carbon dioxide, dry chemical powder, foam, or water spray
Unsuitable Media: Direct water jets may spread dust or burning material
Specific Hazards: Can produce nitrogen oxides, carbon monoxide, and carbon dioxide on combustion; fine dust mixed with air can ignite explosively
Protective Equipment for Firefighters: Full firefighting gear, self-contained breathing apparatus; avoid inhaling combustion gases
Advice for Firefighters: Move containers away from fire area if safe; cool with water spray; avoid runoff contamination
Personal Precautions: Wear appropriate personal protection including eye protection, gloves, lab coat, dust mask or respirator
Environmental Precautions: Prevent large spills from entering drains or waterways
Containment: Collect using non-sparking tools; sweep or vacuum without generating dust
Cleanup Methods: Shovel or scoop into labeled containers for disposal; air out spill area to clear vapors
Notification: Report larger releases per local and national regulations; small spills can often be managed with standard laboratory procedure
Precautions for Safe Handling: Avoid breathing dust or vapor; prevent skin and eye contact by using personal protection; minimize dust generation; do not eat or drink in handling area
Safe Storage Conditions: Store in a cool, dry, well-ventilated place away from ignition sources; keep container tightly closed and clearly labeled
Incompatible Materials: Strong oxidizers, acids, or open flames
Special Handling Requirements: Use only outdoors or in a fume hood; ground and bond containers if transferring large quantities to prevent static discharge
Exposure Limits: No established OSHA, ACGIH, or NIOSH exposure limits; treat as nuisance dust
Engineering Controls: Provide local exhaust ventilation; use only in well-ventilated areas
Personal Protective Equipment: Chemical splash goggles, gloves, protective lab coat, dust mask or respirator with P2/P3 filter if dust or vapor exceeds comfort levels
Hygiene Measures: Wash hands and exposed skin after use; take off contaminated clothing before leaving work area
Environmental Controls: Avoid discharge to environment; provide spill cleanup materials nearby
Appearance: Colorless to pale yellow crystalline powder
Odor: Nutty, roasted, cocoa-like aroma
Odor Threshold: Detectable at low concentrations around 0.04 ppm (flavor use)
pH: Not available as solid; slight acidity in solution
Melting Point: 54–56°C (129–132°F)
Boiling Point: 172–174°C (342–345°F)
Flash Point: 54°C (129°F)
Evaporation Rate: Not established
Flammability: Combustible solid
Explosion Limits: Not documented, but dust can be explosive in air
Vapor Pressure: 0.38 mmHg at 25°C
Vapor Density: Heavier than air
Relative Density: 1.09
Solubility: Slightly soluble in water, soluble in ethanol and ether
Partition Coefficient (n-octanol/water): log Kow = 0.31
Autoignition Temperature: Not precisely documented, above 400°C generally expected
Decomposition Temperature: Not specified, decomposes with heat releasing hazardous gases
Viscosity: Not applicable as solid
Chemical Stability: Stable under normal conditions; no special stabilizers required
Reactivity: Does not react with most common materials by itself
Hazardous Reactions: Vigorous reactions possible with strong oxidizers
Conditions to Avoid: High temperature, direct flame, static discharge, and sources of ignition
Incompatible Materials: Powerful oxidizing agents, strong acids, some reactive metals
Hazardous Decomposition Products: Nitrogen oxides, carbon monoxide, carbon dioxide fume when heated or burned
Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Toxicity: Low; exact LD50 (oral, rat) greater than 2000 mg/kg. No systemic toxicity at flavoring doses
Skin Corrosion/Irritation: May cause mild irritation on repeated or prolonged contact
Eye Damage/Irritation: Dust or crystal contact can irritate
Respiratory Sensitization: Repeated exposure to dust may cause coughing or throat discomfort
Carcinogenicity: Not identified as carcinogen by IARC, NTP, OSHA
Mutagenicity/Reproductive Toxicity: No evidence in current data
Chronic Exposure: Repeated exposure can increase likelihood of minor skin or eye irritation
Additional Effects: Not likely to cause long-term health effects outside rare workplace overexposure
Toxicity to Aquatic Life: No data indicate high aquatic toxicity, though significant spills should be contained
Persistence and Degradability: Biodegradable by soil bacteria; will break down over time
Bioaccumulation: Low potential; log Kow and water solubility suggest little buildup in aquatic life
Mobility in Soil: Will disperse with water but binds moderately to soil
Other Adverse Effects: No known ozone depletion or environmental hazard under typical conditions; larger than lab-scale spills should be covered by local reporting and remediation guidelines
Recommended Disposal: Incinerate in a permitted facility, or send for chemical waste disposal per local, national, and regional regulations
Container Disposal: Triple-rinse and offer containers for recycling or proper disposal
Special Considerations: Avoid release to environment; do not flush to drain
Waste Code: Assignment depends on local rules, often non-hazardous for small quantities but check site-specific classification
UN Number: Not regulated under major international transport codes (UN, DOT, IMDG, IATA) for typical amounts
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not classified
Packing Group: Not assigned
Environmental Hazards: Not listed as marine pollutant
Special Precautions for Transport: Keep containers secure, dry, and away from food; use unbreakable or protected containers; follow site-specific chemical safety protocols if included with high-purity or large-quantity shipments
Inventory Listings: Listed on U.S. TSCA, EU EINECS (204-625-6), Canada DSL, Australia AICS
OSHA Status: Not identified as hazardous by OSHA GHS criteria
SARA 313: Not a listed chemical
California Proposition 65: Not identified for listing
WHMIS Classification: Not controlled in small-scale use; check with Canadian providers
Other International Regulations: Compliance with REACH, RoHS, and food-grade regulations as relevant for end use; always consult local, regional, or application-specific rules before use or supply
