2-Butanone oxime

  • 2-Butoxime
  • Ethyl methyl ketone oxime
  • Ethyl methyl ketoxime
  • Methyl ethyl ketoxime
  • Aron M 1
  • Exkin 2
Formula
C4H9NO
Structure
Description
Colorless to light yellow liquid.

Registry Numbers and Inventories.
CAS
96-29-7
EC (EINECS/ELINCS)
202-496-6
EC Index Number
616-014-00-0
EC Class
Carcinogenic Category 3; Harmful; Irritant; Sensitising
R 21 40 41 43
S 13 23 26 36/37/39
RTECS
EL9275000
RTECS class
Tumorigen; Mutagen; Primary Irritant
UN (DOT)
1993
Beilstein/Gmelin
5796922
Swiss Giftliste 1
G-4421
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H9NO
Formula mass
87.12
Melting point, °C
-20
Boiling point, °C
152
Vapor pressure, mmHg
23
Vapor density (air=1)
3
Saturation Concentration
3553 ppm (0.3%) at 20 C (calculated)
Density
0.9232 g/cm3 (20 C)
Solubility in water
Soluble
Refractive index
1.4410 (20 C)
pKa/pKb
12.35 (pKa)

Hazards and Protection.
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.
Protection
Wear appropriate safety goggles, 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.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Sensitive to heat Reacts with oxidizing agents Mixtures with strong acids may explode Reacts with sulfuric acid to form an explosive product.
Decomposition
Irritating and toxic fumes and gases.

Fire.
Flash Point,°C
62
Autoignition, °C
315
Upper exp. limit, %
12.3
Lower exp. limit, %
1.9
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.
Fire potential
This chemical is combustible.
Hazards
During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
-
 
Flammability
2
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Vapors may cause dizziness or suffocation. May cause irritation or burns.
   Skin
May cause sensitization by skin contact.
   Eyes
Causes irritation.

First aid
 
   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.

Transport.
UN number
1993
Response guide
Hazard class
3
Packing Group
I; II; III
 
HS Code
2928 00 90