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Chemical Datasheet
METHYL ETHYL KETOXIME |
|
Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
- 96-29-7
|
|
|
none
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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
PHYSICAL DESCRIPTION: Clear colorless liquid with a musty odor. (NTP, 1992)
Hazards
Reactivity Alerts
- Highly Flammable
- Decomposes at Elevated Temperatures (<120 deg. C)
Air & Water Reactions
Highly flammable. Water soluble.
Fire Hazard
This chemical is combustible. (NTP, 1992)
Health Hazard
SYMPTOMS: Symptoms of exposure to this compound may include slight eye and skin irritation. It may interfere with alcohol metabolism resulting in the formation of acetaldehyde, blotchy red marks, red eyes, tiredness and visible veins.
ACUTE/CHRONIC HAZARDS: This compound may be harmful if swallowed, inhaled or absorbed through the skin. When heated to decomposition it emits toxic fumes of carbon monoxide, carbon dioxide and nitrogen oxides. (NTP, 1992)
Reactivity Profile
METHYL ETHYL KETOXIME is sensitive to heat. Has exploded at least twice when heated in the presence of acidic impurities [Chem. Eng. News, 1974, 52(35), 3]. Reacts with oxidizing agents. Mixtures with strong acids may explode. Reacts with sulfuric acid to form an explosive product (NTP, 1992).
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents
No information available.
Response Recommendations
Isolation and Evacuation
Excerpt from 128
[Flammable Liquids (Water-Immiscible)]:
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 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
Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. A water spray may also be used. (NTP, 1992)
Non-Fire Response
SMALL SPILLS AND LEAKAGE: If you should spill this chemical, 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 store this chemical under freezer conditions, and keep it away from all oxidizing materials. (NTP, 1992)
Protective Clothing
RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)
DuPont Tychem® Suit Fabrics
Normalized Breakthrough Times (in Minutes)
Chemical |
CAS Number |
State |
QS |
QC |
SL |
C3 |
TF |
TP |
RC |
TK |
RF |
Butanone oxime, 2- |
96-29-7 |
Liquid |
|
|
>480 |
|
>480 |
>480 |
>480 |
>480 |
>480 |
Methyl ethyl ketoxime |
96-29-7 |
Liquid |
|
|
>480 |
|
>480 |
>480 |
>480 |
>480 |
>480 |
Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be
used around heat, flames, sparks or in potentially flammable or
explosive environments. Only...
(DuPont, 2023)
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. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. 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. 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. Be prepared to transport the victim to a hospital if advised by a physician. 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. (NTP, 1992)
Physical Properties
Flash Point:
138°F
(NTP, 1992)
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point:
-21.1°F
(NTP, 1992)
Vapor Pressure:
22.6 mmHg
at 73°F
; 50.9 mmHg at 118°F
(NTP, 1992)
Vapor Density (Relative to Air):
3
(NTP, 1992)
- Heavier than air; will sink
Specific Gravity:
0.9232
at 68°F
(NTP, 1992)
- Less dense than water; will float
Boiling Point:
306°F
at 760 mmHg
(NTP, 1992)
Molecular Weight:
87.12
(NTP, 1992)
Water Solubility:
greater than or equal to 100 mg/mL
at 72°F
(NTP, 1992)
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 |
Butanone oxime; (Ethyl methyl ketoxime) (96-29-7)
|
30 ppm |
56 ppm |
250 ppm |
(DOE, 2018)
Regulatory Information
EPA Consolidated List of Lists
No regulatory information available.
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
- ARON M 1
- BUTANONE OXIME
- 2-BUTANONE, OXIME
- 2-BUTOXIME
- ETHYL METHYL KETONE OXIME
- ETHYL METHYL KETOXIME
- EXKIN 2
- EXKIN II
- MEK-OXIME
- MEKOR 70
- METHYL ETHYL KETONE OXIME
- METHYL ETHYL KETOXIME
- SKINO #2
- TROYKYD ANTI-SKIN B
- USAF AM-3
- USAF DO-44
- USAF EK-906