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Chemical Datasheet
1,2-BUTYLENE OXIDE |
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Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
- 106-88-7
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NIOSH Pocket Guide |
International Chem Safety Card |
none
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- BUTYLENE OXIDE (STABILIZED)
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NFPA 704
General Description
A clear colorless volatile liquid with an ethereal odor. Flash point near 0°F. Density about 6.9 lb / gal. Soluble in water. Boiling point near 140°F. Flammable over a wide range of vapor-air concentrations. May polymerize with the evolution of heat and possible rupture of container if contaminated. Vapors irritate eyes, skin and respiratory system. Prolonged contact with skin may cause in delayed burns. Vapors are heavier than air. Used as an intermediate to make various polymers. 365betÓéÀÖ that polymerize are often stabilized by refrigeration.
Hazards
Reactivity Alerts
- Highly Flammable
- Polymerizable
Air & Water Reactions
Highly flammable. Soluble in water and may decompose upon contact with water.
Fire Hazard
Behavior in Fire: Containers may explode in fire. Use water to cool container from safe distance. (USCG, 1999)
Health Hazard
Inhalation: intolerable odor and irritation; respiratory injury may occur at higher levels. Ingestion causes irritation of mouth and stomach. Contact with either liquid or vapor may cause burns of eyes. Liquid produces frostbite-type of skin burn if free to evaporate; if confined to skin, burn may cause skin sensitization; not readily absorbed in toxic amounts. (USCG, 1999)
Reactivity Profile
Epoxides, such as 1,2-BUTYLENE OXIDE, are highly reactive. They polymerize in the presence of catalysts or when heated. Contact with anhydrous metal halides; amino, hydroxyl and carboxyl functions; inorganic acids and charcoal may cause polymerization. These polymerization reactions can be violent. Compounds in this group react with acids, bases, and oxidizing and reducing agents. They react, possibly violently with water in the presence of acid and other catalysts.
Belongs to the Following Reactive Group(s)
- Epoxides
- Polymerizable Compounds
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been
known to react with the
absorbents
listed below.
- Mineral-Based & Clay-Based Absorbents
- Dirt/Earth
Response Recommendations
Isolation and Evacuation
Excerpt from ERG Guide 127

[Flammable Liquids (Water-Miscible); polymerization hazard]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 50 meters (150 feet) in all directions.
LARGE SPILL: Consider initial downwind evacuation for at least 300 meters (1000 feet).
FIRE: If tank, rail tank car or highway tank 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, 2024)
Firefighting
Fire Extinguishing Agents Not to Be Used: Water may be ineffective.
Fire Extinguishing Agents: Dry chemical, alcohol foam, carbon dioxide (USCG, 1999)
Non-Fire Response
SMALL SPILLS AND LEAKAGE: If you spill this chemical, FIRST REMOVE ALL SOURCES OF IGNITION. Then, use absorbent paper to pick up all liquid spill material. Seal the absorbent paper, as well as any of your clothing which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Wash any surfaces you may have contaminated with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
STORAGE PRECAUTIONS: You should protect this chemical from exposure to light. Keep the container tightly closed under an inert atmosphere, and store it in an explosion-proof refrigerator. STORE AWAY FROM SOURCES OF IGNITION. (NTP, 1992)
Protective Clothing
Clean protective clothing; rubber gloves; chemical worker's goggles; self-contained breathing apparatus (USCG, 1999)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.
INGESTION: DO NOT INDUCE VOMITING. Volatile chemicals have a high risk of being aspirated into the victim's lungs during vomiting which increases the medical problems. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. IMMEDIATELY transport the victim to a hospital. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.
OTHER: Since this chemical is a known or suspected carcinogen you should contact a physician for advice regarding the possible long term health effects and potential recommendation for medical monitoring. Recommendations from the physician will depend upon the specific compound, its chemical, physical and toxicity properties, the exposure level, length of exposure, and the route of exposure. (NTP, 1992)
Physical Properties
Flash Point:
10°F
(NTP, 1992)
Lower Explosive Limit (LEL):
1.5 %
(NTP, 1992)
Upper Explosive Limit (UEL):
18.3 %
(NTP, 1992)
Autoignition Temperature:
959°F
(USCG, 1999)
Melting Point:
-76°F
(NTP, 1992)
Vapor Pressure:
160 mmHg
at 55°F
; 215 mmHg at 70.0°F
(NTP, 1992)
Vapor Density (Relative to Air):
2.49
(NTP, 1992)
- Heavier than air; will sink
Specific Gravity:
0.826
at 77°F
(USCG, 1999)
- Less dense than water; will float
Boiling Point:
145°F
at 760 mmHg
(NTP, 1992)
Molecular Weight:
72.11
(NTP, 1992)
Water Solubility:
greater than or equal to 100 mg/mL
at 63°F
(NTP, 1992)
Ionization Energy/Potential: data unavailable
IDLH: data unavailable
AEGLs (Acute Exposure Guideline Levels)
Interim AEGLs for 1,2-Butylene oxide (106-88-7)
Exposure Period |
AEGL-1 |
AEGL-2 |
AEGL-3 |
10 minutes |
72 ppm |
140 ppm |
410 ppm |
30 minutes |
72 ppm |
140 ppm |
410 ppm |
60 minutes |
72 ppm |
140 ppm |
330 ppm |
4 hours |
72 ppm |
140 ppm |
210 ppm |
8 hours |
72 ppm |
140 ppm |
210 ppm |
(NAC/NRC, 2024)
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
|
Epoxybutane, 1,2-; (1,2-Butylene oxide) (106-88-7)
|
72 ppm |
140 ppm |
330 ppm |
LEL = 17000 ppm |
(DOE, 2024)
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 |
1,2-Butylene oxide |
106-88-7 |
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100 pounds |
313 |
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(EPA List of Lists, 2024)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- ALPHA-BUTYLENE OXIDE
- BUTANE, 1,2-EPOXY-
- BUTENE 1,2-EPOXIDE
- 1,2-BUTENE OXIDE
- 1-BUTENE OXIDE
- 1,2-BUTYLENE EPOXIDE
- BUTYLENE OXIDE
- 1,2-BUTYLENE OXIDE, STABILIZED
- 1,2-BUTYLENE OXIDE, [STABILIZED]
- 1, 2-BUTYLENE OXIDE
- 1,2-BUTYLENE OXIDE
- 1-BUTYLENE OXIDE
- DL-1,2-EPOXYBUTANE
- EPOXYBUTANE
- 1,2-EPOXYBUTANE
- ETHYLETHYLENE OXIDE
- ETHYLOXIRANE
- (.+-.)-ETHYLOXIRANE
- (.+-.)-2-ETHYLOXIRANE
- 2-ETHYLOXIRANE
- NCI-C55527