1,2-Butylene oxide
1,2-epoxybutane
CAS: 106-88-7
Molecular Formula: C4H8O
1,2-Butylene oxide - Names and Identifiers
| Name | 1,2-epoxybutane |
| Synonyms | 1,2-epoxy Butyleneoxide 1-Butene oxide 1,2-epoxy-butan 1,2-epoxybutane 1,2-buteneoxide 1,2-Butene oxide 1,2-Butylene oxide 1,2-butyleneepoxide (2R)-2-ethyloxirane (R,S)-2-Ethyl-oxirane 1,2-butyleneoxide,stabilized 1,2-epoxybutane(1,2-butyleneoxide) |
| CAS | 106-88-7 |
| EINECS | 203-438-2 |
| InChI | InChI=1/C4H8O/c1-2-4-3-5-4/h4H,2-3H2,1H3/t4-/m1/s1 |
| InChIKey | RBACIKXCRWGCBB-UHFFFAOYSA-N |
1,2-Butylene oxide - Physico-chemical Properties
| Molecular Formula | C4H8O |
| Molar Mass | 72.11 |
| Density | 0.829 g/mL at 20 °C(lit.) |
| Melting Point | -129.28°C |
| Boling Point | 63°C(lit.) |
| Flash Point | 10°F |
| Water Solubility | 86.8g/L at 25℃ |
| Solubility | 86.8g/l |
| Vapor Presure | 140 mm Hg ( 20 °C) |
| Vapor Density | 2.2 (vs air) |
| Appearance | Colorless liquid withpungent odor |
| Color | Colorless to Almost colorless |
| BRN | 102411 |
| PH | 7 (50g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Stability | Stable, but prone to polymerization - stabilizer may be added to neat liquid. Highly flammable. Incompatible with strong oxidizing agents, acids, bases, anhydrous metal halides, amino, hydroxyl and ca |
| Explosive Limit | 1.7-19%(V) |
| Refractive Index | n20/D 1.384 |
| Physical and Chemical Properties | A colorless flowing liquid. Freezing point -150 ℃, boiling point 63 ℃, relative density 0.8312(20/20 ℃), refractive index 1.3840, flash point -12 ℃. Miscible with most organic solvents, slightly soluble in water. |
1,2-Butylene oxide - Risk and Safety
| Risk Codes | R11 - Highly Flammable R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. R40 - Limited evidence of a carcinogenic effect R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S29 - Do not empty into drains. S36/37 - Wear suitable protective clothing and gloves. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S19 - |
| UN IDs | UN 3022 3/PG 2 |
| WGK Germany | 2 |
| RTECS | EK3675000 |
| TSCA | Yes |
| HS Code | 29109000 |
| Hazard Class | 3.1 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: 500 mg/kg LD50 dermal Rabbit 1743 mg/kg |
1,2-Butylene oxide - Reference Information
| LogP | 0.68 at 25℃ |
| (IARC) carcinogen classification | 2B (Vol. 47, 71) 1999 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | is used in the manufacture of intermediates and polymers, for example in the production of 1, 2-butanediol. It is also used instead of acetone as a diluent for nitrocellulose, and 1, 2-butylene oxide can also be used as a standard substance for chromatographic analysis. |
| production method | industrially, butylene oxide is derived from the recovery of by-products from the production of propylene oxide, in the process of producing ethylene oxide and propylene oxide by using pyrolysis tail gas through hypochlorous acid, the residual liquid of propylene oxide tower can be obtained. It contains 74.6% butylene oxide, 16.7% propylene oxide, 0.7% ethylene oxide, 3.1% water, and a small amount of high boiling material. The 50-70 °c fraction is collected from the column by distillation, and the water is removed after condensation to obtain a finished 1, 2-butylene oxide content of about 87%, which can be further fractionated if higher purity is desired. |
| category | flammable liquid |
| toxicity grade | high toxicity |
| Acute toxicity | oral-rat LD50: 500 mg/kg |
| stimulation data | Skin-rabbits 500 mg/24 h mild; eye-rabbit 100 mg/24 h moderate |
| explosive hazard characteristics | explosive when mixed with air; explosive peroxide generated in air for a long time |
| flammability hazard characteristics | in case of open flame, high temperature, flammable oxidant; Combustion stimulus smoke |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from oxidants and food raw materials; It is not suitable for long storage, in case of explosion |
| extinguishing agent | dry powder, CO2, foam, 1211 extinguishing agent |
| Occupational Standard | TWA 200 PPM |
| spontaneous combustion temperature | 698 ° F. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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