Substance profile
2-Butanone oxime
2-Butanone oxime is a liquid.
01 · Identification
What 2-Butanone oxime is
2-Butanone oxime is a liquid. Its molecular formula is C4H9NO and its molecular weight is 87.12 g/mol. It boils at 153 °C, melts at -29.5 °C.
Under the GHS it carries the signal word Danger.
Other names for 2-Butanone oxime
- butanone oxime
- ethyl methyl ketoxime
- ethyl methyl ketone oxime
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H350 | May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H301 | Toxic if swallowed. |
| H312 | Harmful in contact with skin. |
| H336 | May cause drowsiness or dizziness. |
| H370 | Causes damage to organs <or state all organs affected, if known> <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H373 | May cause damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H315 | Causes skin irritation. |
| H318 | Causes serious eye damage. |
| H317 | May cause an allergic skin reaction. |
Precautionary statements: P201, P260, P261, P264, P270, P272, P280, P301, P302, P305, P308, P310, P311, P312, P313, P314, P330, P332, P333, P338, P352
03 · Physical and chemical properties
2-Butanone oxime properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 152.5 °C (306.5 °F) | HSDB | |
| 152.22 °C (306 °F) | at 760 mmHg | CAMEO | |
| 152 °C (305.6 °F) | at 760 mmHg | DOE PAC | |
| Melting point | -29.5 °C (-21.1 °F) | HSDB | |
| Density | 0.9232 g/cm³ | at 20 °C | HSDB |
| 0.923 g/cm³ | at 20 °C | DOE PAC | |
| Solubility | Soluble in chloroform; miscible with ethanol and ether | HSDB | |
| greater than or equal to 100 mg/mL at 72 °F (NTP, 1992) | at 22.22 °C | CAMEO | |
| In water, 100,000 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 22.6 mmHg | at 22.78 °C | CAMEO |
| 1.06 mmHg | at 20 °C | HSDB | |
| 7.6 mmHg | at 50 °C | HSDB | |
| Flash point | 58.89 °C (138 °F) | CAMEO | |
| Vapor density | 3 (air = 1) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 2-Butanone oxime
Reactivity
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).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2-Butanone oxime in the storage compatibility matrix →