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2-Butanone suppliers
- CAS:
- 78-93-3
- MF:
- C4H8O
- MW:
- 72.11
Properties
- Melting point::
- -87 °C (lit.)
- Boiling point::
- 80 °C (lit.)
- Density :
- 0.805 g/mL at 25 °C (lit.)
- vapor density :
- 2.49 (vs air)
- vapor pressure :
- 71 mm Hg ( 20 °C)
- refractive index :
- n
20/D 1.379(lit.)
- FEMA :
- 2170 | 2-BUTANONE
- Flash point::
- 26 °F
- storage temp. :
- 2-8°C
- solubility :
- Miscible with acetone, ethanol, benzene, ether (U.S. EPA, 1985), and many other solvents, particularly ketones and aldehydes
- form :
- Solution
- pka:
- 14.7 (quoted, Riddick et al., 1986)
- color :
- Colorless
- Relative polarity:
- 0.327
- Odor:
- Sweet/sharp odor detectable at 2 to 85 ppm (mean = 16 ppm)
- PH:
- pH(1+4, 25℃):6.0~7.0
- explosive limit:
- 1.8-11.5%(V)
- Odor Threshold:
- 0.44ppm
- Odor Type:
- ethereal
- Water Solubility :
- 290 g/L (20 ºC)
- Merck :
- 14,6072
- JECFA Number:
- 278
- BRN :
- 741880
- Henry's Law Constant:
- 23.0 at 50.00 °C, 34.1 at 60.00 °C, 50.6 at 70.00 °C, 70.4 at 80.00 °C (headspace-GC, Hovorka et al., 2002)
- Exposure limits:
- TLV-TWA, PEL 590 mg/m3 (200 ppm) (ACGIH, OSHA); STEL 885 mg/m3 (300 ppm) (ACGIH); IDLH 3000 ppm (NIOSH).
- Dielectric constant:
- 18.5(20℃)
- Stability::
- Stable. Highly flammable. Incompatible with oxidizing agents, bases, strong reducing agents. Protect from moisture.
- LogP:
- 0.3 at 40℃
SecurityInformation
- Symbol(GHS) :
-
GHS02,GHS07
- Signal word :
- Danger
- Hazard statements :
- H225-H319-H336
- Precautionary statements :
- P210-P305+P351+P338
- Hazard Codes :
- F,Xi,T
- Risk Statements :
- 11-36-66-67-39/23/24/25-23/24/25
- Safety Statements :
- 9-16-45-36/37
- OEB:
- A
- OEL:
- TWA: 200 ppm (590 mg/m3), STEL: 300 ppm (885 mg/m3)
- RIDADR :
- UN 1193 3/PG 2
- WGK Germany :
- 1
- RTECS :
- EL6475000
- Autoignition Temperature:
- 516 °C
- TSCA :
- Yes
- HazardClass :
- 3
- PackingGroup :
- II
- HS Code :
- 29141200
- Toxicity:
- LD50 orally in rats: 6.86 ml/kg (Smyth)
- IDLA:
- 3,000 ppm
- Use:
- Occupational workers are exposed to 2-butanone by breathing contaminated air in workplaces associated with the production or use of paints, glues, coatings, or cleaning agents. Prolonged exposures to 2-butanone cause symptoms of poisoning such as cough, dizziness, drowsiness, headache, nausea, vomiting, dermatitis, irritation of the nose, throat, skin, and eyes and at very high levels cause drooping eyelids, uncoordinated muscle movements, loss of consciousness, and birth defects. Chronic inhalation studies in animals have reported slight neurological, liver, kidney, and respiratory effects. However, information on the chronic (long-term) effects of 2-butanone (methyl ethyl ketone) in humans is limited.
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