Product Identification
【Product Name】2-Butanone oxime  甲乙酮肟
【Synonyms】Methyl ethyl ketoxime
【CAS】96-29-7
【Formula】C4H9NO
【Molecular Weight】87.12
【EINECS】202-496-6
【RTECS】EL9275000
【RTECS Class】Tumorigen; Mutagen; Primary Irritant
【Beilstein/Gmelin】5796922
【EC Index Number】616-014-00-0
【EC Class】Carcinogenic Catery 3; Harmful; Irritant; Sensitising

Physical and Chemical Properties
【Appearance】Colorless to light yellow liquid.
【Solubility in water】Soluble
【Melting Point】-20℃
【Boiling Point】152℃
【Vapor Pressure】23℃
【Density】0.9232 g/cm3 (20℃)
【pKa/pKb】12.35 (pKa)
【Vapor Density】3
【Saturation Concentration】3553 ppm (0.3%) at 20℃ (calculated)
【Refractive Index】1.4410 (20℃)

First Aid Measures
【Ingestion】If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
【Inhalation】Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
【Skin】Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
【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.

Handling and Storage
【Storage】Store in a cool, dry place. Keep container closed when not in use.
【Handling】Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification
【Inhalation】Vapors may cause dizziness or suffocation. May cause irritation or burns.
【Skin】May cause sensitization by skin contact.
【Eyes】Causes irritation.
【Hazards】During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
【EC Risk Phrase】R 21 40 41 43
【EC Safety Phrase】S 13 23 26 36/37/39
【UN (DOT)】1993

Exposure Controls/Personal Protection
【Personal Protection】Wear appropriate safety ggles, protective clothing and gloves.
【Respirators】A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
【Exposure Effects】the toxological properties of this substance have not been fully investigated.
【Poison Class】4

Fire Fighting Measures
【Flash Point】62℃
【Autoignition】315℃
【Fire Fighting】Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. A water spray may also be used.
【Upper exp. limit】12.3
【Lower exp. limit】1.9
【Fire Potential】This chemical is combustible.

Accidental Release Measures
【Small spills/leaks】Clean up spills immediately, using the appropriate protective equipment.

Stability and Reactivity
【Disposal Code】1
【Incompatibilities】

Sensitive to heat Reacts with oxidizing agents Mixtures with strong acids may explode Reacts with sulfuric acid to form an explosive product.
【Stability】Stable under normal temperatures and pressures.
【Decomposition】Irritating and toxic fumes and gases.
【Combustion Products】Fire may produce irritating, corrosive and/or toxic gases.

Transport Information
【UN Number】1993
【Hazard Class】3
【Packing Group】I; II; III
【HS Code】2928 00 90