IDENTIFICATION AND USE: 1-Butene is a colorless gas. It is is used for the production of a wide variety of chemicals in the gasoline and rubber processing areas. Most 1-butene is used as a comonomer for linear low-density polyethylene, which contains up to 10%. However, 1-butene is also used as a comonomer for modifying high-density polyethylene, which contains up to 4%. HUMAN STUDIES: 1-Butene is a simple asphyxiant and may be a CNS depressant in high concentrations. It has a low acute toxicity and is mildly irritating to the eye. On direct eye and skin contact liquid butene can cause burns and frostbite. The treatment of human peripheral blood mononuclear cells (PBMCs) and promyelocytic leukemia cells (HL60) for 24 hr resulted in an increase of DNA damage. HL60 cells were more resistant than PBMCs to the DNA damage. ANIMAL STUDIES: Exposure to 1-butene at target concentrations of 500, 2000, 8000 ppm (approximately 1147, 4589, 18359 mg/cu m) did not induce systemic toxicity in male and female rats exposed for 28 days or in pregnant female rats exposed for 14 days pre-mating, through mating and gestation to day 19. There were no treatment-related effects on the development of pups. As an anesthetic, it is 4.5 times more potent than ethylene. Exposure of mice to concentrations of 15% butene resulted in reversible signs of incoordination, confusion, and hyperexcitability; at 20% deep anesthesia in 8 to 15 min, with subsequent respiratory failure in 2 hr; and at 30% in 2 to 4 min and 40 min, respectively. A concentration of 40% resulted in profound anesthesia in 30 sec, with no CNS symptoms but with death in 10 to 15 min. ECOTOXICITY STUDIES: Tomato: epinasty in petiole: 50,000 ppm, 2 days.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
暴露途径
这种物质可以通过吸入被身体吸收。
The substance can be absorbed into the body by inhalation.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
毒理性
吸入症状
窒息。
Suffocation.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
毒理性
皮肤症状
接触液体时:冻伤。
ON CONTACT WITH LIQUID: FROSTBITE.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
毒理性
眼睛症状
接触液体时:冻伤。
ON CONTACT WITH LIQUID: FROSTBITE.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
The absorption, distribution, elimination, hemoglobin adduct formation and DNA adduct formation of individual C2-C8 1-alkenes was studied in the rat after exposure to 300 ppm (688mg/cu m), 12 hr a day for 3 consecutive days. The concentrations of the alkenes were measured in blood, lung, brain, liver, kidney and peri-renal fat immediately after each exposure and 12 hr after the third exposure. DNA adducts were determined by (32)P-postlabeling in liver. Hemoglobin adducts were determined in erythrocytes by GC/MS and GC/MS/MS. Concentrations of 1-alkenes in blood and organs reached a steady-state level after the first 12 hr exposure, and the concentrations 12 hr after the last exposure were generally low, except in fat. Concentrations of 1-alkenes in blood and the different tissues increased with increasing number of carbon atoms. However, DNA adducts and hemoglobin adducts decreased with increasing number of carbon atoms with the most pronounced decrease being from C2 to C3. The decrease in hemoglobin adducts was more pronounced than DNA adducts. All 1-alkenes caused formation of detectable levels of hemoglobin and DNA adducts, although the levels of hemoglobin adducts after C4-C8 exposure were low. These results also indicate that extrapolation within the homologous series is possible. /1-Alkenes/