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Chemical Datasheet
ETHYL NITRITE, SOLUTION |
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Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
- 109-95-5
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NIOSH Pocket Guide |
International Chem Safety Card |
none
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none
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NFPA 704
General Description
A clear colorless to yellow liquid with a pleasant odor. Flammable over a wide range of vapor-air concentrations. Flash point -31°F. Less dense than water and insoluble in water. Vapors are heavier than air and narcotic in high concentrations. Produces toxic oxides of nitrogen during combustion.
Hazards
Reactivity Alerts
- Explosive
- Strong Oxidizing Agent
- Pyrophoric
Air & Water Reactions
Highly flammable. Vapors may ignite spontaneously and the reaction may reach explosive violence. Insoluble in water. Decomposes in water.
Fire Hazard
Special Hazards of Combustion Products: Toxic oxides of nitrogen are generated.
Behavior in Fire: Vapors are heavier than air and may travel a considerable distance to a source of ignition and flash back; can decompose violently above 194°F; containers may explode in a fire. (USCG, 1999)
Health Hazard
Inhalation or ingestion causes headache, increased pulse rate, decreased blood pressure, and unconsciousness. Contact with liquid irritates eyes and skin. (USCG, 1999)
Reactivity Profile
ETHYL NITRITE is a powerful oxidizing agent. Highly dangerous in contact with acid or acid fumes. Dangerous when heated. Decomposes spontaneously at 194°F. Decomposed by light.
Belongs to the Following Reactive Group(s)
- Nitro, Nitroso, Nitrate, and Nitrite Compounds, Organic
- Water and Aqueous Solutions
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been
known to react with the
absorbents
listed below.
- Cellulose-Based Absorbents
- Expanded Polymeric Absorbents
Response Recommendations
Isolation and Evacuation
Excerpt from 131
[Flammable Liquids - Toxic]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 50 meters (150 feet) in all directions.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
Excerpt from 131
[Flammable Liquids - Toxic]:
CAUTION: The majority of these products have a very low flash point. Use of water spray when fighting fire may be inefficient. CAUTION: Methanol (UN1230) will burn with an invisible flame. Use an alternate method of detection (thermal camera, broom handle, etc.).
SMALL FIRE: Dry chemical, CO2, water spray or alcohol-resistant foam.
LARGE FIRE: Water spray, fog or alcohol-resistant foam. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal. Avoid aiming straight or solid streams directly onto the product.
FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2020)
Non-Fire Response
Excerpt from 131
[Flammable Liquids - Toxic]:
ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor-suppressing foam may be used to reduce vapors.
SMALL SPILL: Absorb with earth, sand or other non-combustible material and transfer to containers for later disposal. Use clean, non-sparking tools to collect absorbed material.
LARGE SPILL: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor, but may not prevent ignition in closed spaces. (ERG, 2020)
Protective Clothing
Self-contained breathing apparatus; goggles or face shield; rubber gloves. (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
INHALATION: remove victim from exposure; if breathing has stopped, give artificial respiration; call physician.
EYES: flush with water for at least 15 min.; get medical attention if irritation persists.
SKIN: flush with water, wash with soap and water.
INGESTION: do NOT induce vomiting; call physician. (USCG, 1999)
Physical Properties
Chemical Formula: |
- C2H5ONO (in organic solvent)
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Flash Point:
-31°F
(USCG, 1999)
Lower Explosive Limit (LEL):
3 %
(USCG, 1999)
Upper Explosive Limit (UEL):
50 %
(USCG, 1999)
Autoignition Temperature:
194°F
(USCG, 1999)
Melting Point:
-58°F
(USCG, 1999)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity:
0.9
at 59°F
(USCG, 1999)
- Less dense than water; will float
Boiling Point:
63°F
at 760 mmHg
(USCG, 1999)
Molecular Weight:
75.1
(USCG, 1999)
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
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Ethyl nitrite (109-95-5)
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0.11 ppm |
1.2 ppm |
7.1 ppm |
LEL = 40000 ppm |
(DOE, 2018)
Regulatory Information
EPA Consolidated List of Lists
Regulatory Name |
CAS Number/ 313 Category Code |
EPCRA 302 EHS TPQ |
EPCRA 304 EHS RQ |
CERCLA RQ |
EPCRA 313 TRI |
RCRA Code |
CAA 112(r) RMP TQ |
Ethyl nitrite |
109-95-5 |
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10000 pounds |
Nitrous acid, ethyl ester |
109-95-5 |
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10000 pounds |
(EPA List of Lists, 2022)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
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RELEASE |
THEFT |
SABOTAGE |
Chemical of Interest |
CAS Number |
Min Conc |
STQ |
Security Issue |
Min Conc |
STQ |
Security Issue |
Min Conc |
STQ |
Security Issue |
Ethyl nitrite; [Nitrous acid, ethyl ester] |
109-95-5 |
1.00 % |
10000 pounds |
flammable |
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(CISA, 2007)
OSHA Process Safety Management (PSM) Standard List
Chemical Name |
CAS Number |
Threshold Quantity (TQ) |
Ethyl Nitrite |
109-95-5 |
5000 pounds |
(OSHA, 2019)
Alternate Chemical Names
- ETHYL NITRITE
- ETHYL NITRITE, SOLUTION
- NITROSYL ETHOXIDE
- NITROUS ACID, ETHYL ESTER
- NITROUS ETHER
- NITROUS ETHYL ETHER
- SPIRIT OF ETHER NITRITE
- SPIRIT OF ETHYL NITRITE
- SWEET SPIRIT OF NITER
- SWEET SPIRIT OF NITRE