© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Product Name: N-Propyl Nitrite
Synonyms: 1-Nitrosooxypropane, Propyl nitrite
CAS Number: 541-42-4
Recommended Use: Industrial applications such as chemical intermediate or laboratory reagent
Manufacturer: Refer to supplier’s identification or local distributor
Emergency Contact: Local poison control center, fire department, or regional emergency response service
Classification: Flammable liquid (Category 2), Acute toxicity oral (Category 4), Acute toxicity inhalation (Category 3), Eye irritation (Category 2A)
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor; Harmful if swallowed; Toxic if inhaled; Causes serious eye irritation
Precautionary Statements: Keep away from fire, heat, sparks, static discharge. Avoid breathing vapors; Wash thoroughly after handling; Wear protective eyewear and gloves; Use only outdoors or in well-ventilated spaces
Substance: N-Propyl Nitrite
Chemical Formula: C3H7NO2
Concentration: 98-100%
Other Components: No significant impurities contributing to hazard classification
Inhalation: Remove from exposure to fresh air immediately. Seek medical attention if symptoms develop, such as headache, dizziness, weakness, or difficulty breathing
Skin Contact: Remove contaminated clothing. Wash skin with plenty of soap and water. If irritation persists, get medical care
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if worn and if easy to do so. Continue rinsing. Seek medical attention for persistent redness, pain, or vision changes
Ingestion: Rinse mouth. Do not induce vomiting. Seek immediate medical attention. Do not give anything by mouth if person is unconscious
Extinguishing Media: Use dry chemical powder, carbon dioxide, or foam. Water spray may be used to cool containers but may not be effective for extinguishment
Special Hazards: Vapors can form explosive mixtures with air. Hazardous decomposition may produce toxic gases such as nitrogen oxides, carbon monoxide, carbon dioxide
Protective Equipment: Firefighters should wear self-contained breathing apparatus and chemical-resistant protective clothing
Firefighting Guidance: Stay upwind, keep containers cool with water spray. Evacuate area if necessary. Prevent runoff from entering water systems
Personal Precautions: Evacuate unnecessary personnel. Wear splash-proof goggles, gloves, suitable protective clothing, and a respirator if necessary
Environmental Precautions: Prevent release into sewers, drains, or waterways. Notify local environmental authorities if significant contamination occurs
Containment Methods: Absorb spill with inert material like sand or vermiculite. Place in chemical waste container for disposal. Ventilate area to remove vapors
Handling: Use only in areas with adequate ventilation. Avoid inhalation of vapors and contact with skin or eyes. Keep away from heat, open flames, and sources of static electricity. Do not use near incompatible materials such as strong acids, bases, oxidizers, or reducing agents
Storage: Store in tightly closed containers in cool, dry, well-ventilated spaces away from direct sunlight and ignition sources. Use explosion-proof equipment and bonding/grounding procedures
Exposure Guidelines: No specific OSHA/ACGIH exposure limits; minimize exposure as a precaution
Engineering Controls: Use local exhaust ventilation, fume hood, or adequate general ventilation to keep airborne concentrations low
Personal Protective Equipment: Wear solvent-resistant gloves, safety goggles or face shield, lab coat or chemical apron, and respiratory protection if air concentration exceeds recommended levels
Hygiene: Wash hands thoroughly after use. Remove and wash contaminated clothing and PPE before reuse
Appearance: Clear yellow liquid
Odor: Fruity, sweet, volatile
Boiling Point: 97–99°C (207–210°F)
Melting Point: -93°C (-135°F)
Flash Point: 11°C (52°F) (closed cup)
Vapor Pressure: 42 mm Hg at 20°C
Density: 0.882 g/cm³ at 20°C
Solubility: Slightly soluble in water, miscible with most organic solvents
Explosion Limits: Lower 1.8%, Upper 10.6% (v/v in air)
Decomposition Products: Nitrogen oxides, carbon oxides
Auto-Ignition Temp: 400°C (752°F)
Chemical Stability: Stable under recommended storage conditions, but may decompose slowly, generating pressure in closed containers
Conditions to Avoid: Heat, open flames, sparks, strong sunlight, static discharge
Incompatible Materials: Strong acids, alkalis, oxidizers, reducers, amines, metals like zinc and iron
Hazardous Decomposition: Nitrogen oxides, carbon monoxide, toxic organic compounds
Hazardous Polymerization: Not expected under normal conditions
Likely Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Effects: Headache, dizziness, weakness, tachycardia, blood pressure drop, methemoglobinemia. Vapors may irritate eyes, nose, respiratory tract
Chronic Exposure: Prolonged, repeated exposure may lead to damage of blood and liver function; reports of reproductive effects with chronic misuse
LD50: Oral (rat): Approximately 120 mg/kg. Inhalation LC50 (rat, 4hr): 675 ppm
Irritation Data: Moderate eye and skin irritant
Carcinogenicity: Not classified as a carcinogen by IARC, NTP, OSHA
Ecotoxicity: Expected to be toxic to aquatic organisms. Risk of oxygen depletion in water bodies due to decomposition
Persistence and Degradability: Incomplete breakdown in water and soil. Expected to degrade slowly in the environment
Bioaccumulation: Potential for bioaccumulation is low; rapid metabolism expected in most species
Mobility in Soil: Highly mobile in soil; may leach to groundwater
Other Effects: Spillage may temporarily impact aquatic environments. Avoid discharge to surface water or sewers
Waste Disposal: Do not pour unused product down drains, on soil, or into water bodies. Dispose of at licensed hazardous waste facility
Container Disposal: Rinse thoroughly before discarding container as chemical waste. Follow local, state, and national regulations
Special Precautions: Consult local regulations for restrictions. Incineration preferred if permitted. Avoid landfill disposal for bulk or concentrated material
UN Number: UN 1275
Proper Shipping Name: Propyl nitrites
Hazard Class: 3 (Flammable liquid)
Packing Group: II
Environmental Hazards: Classified as marine pollutant
Transport Precautions: Secure containers upright, protected from physical damage. Use approved packaging and labeling. Emergency response information should be accessible to handlers and drivers
OSHA: Regulated as hazardous under OSHA Hazard Communication Standard
TSCA: Listed in the TSCA Inventory
SARA Title III: Not specifically listed as extremely hazardous; subject to reporting under Section 311/312 for fire and acute toxicity hazards
RCRA: May be classified as a hazardous waste. Check federal and local environmental regulations
Other State and International Regulations: Follow specific state, federal, and international requirements, including those for workplace exposure, environmental discharge, and emergency planning
