Isobutyl acetate ( Iso butyl acetate ) is an organic chemical compound with the formula that alcohol from the reaction of isobutanol with acetic acid in the presence of a strong acid such as sulfuric acid as a catalyst is obtained. The molecular weight of this ester is about 116 g / mol, the specific gravity is 0.875 g / m3 and its boiling point is 8 118. Another name for the solvent 2-methyl propyl Atanu ( 2-Methylpropyl ethanoate ) is a colorless liquid and transparent, as well as other ethers smell of herbal or so-called fruit is naturally in some fruits such as pears and raspberries are found, speed Evaporation is moderate, it does not smell bad and because it has properties similar to the properties of normal butyl acetate and methylisobutylctone, it can be used instead of in chemical formulations.
Isobutyl acetate has very good solvent properties for resins, some polymers, alphatic hydrocarbons, mainly used in the paint industry to make thinners and varnishes for wood and adhesives. As mentioned, economically suitable substitute for methyl isobutyl acetate (MIBK), normal butyl acetate, is toluene in many formulations, if it requires rapid evaporation of the solvent, normal butyl acetate is used instead. Its very good solvent properties cause the solvent to penetrate well into the film coatings and also help to reduce their viscosity. Due to the evaporation rate and suitable solvent properties, it is used in high percentage solid coatings as well as some printing inks.
Molecular structure of isobutyl acetate:
Isobutyl acetate, like other ester compounds, is produced in a reversible reaction by combining one molecule of isobutanol and acetic acid. Isobutyl acetate has three structural isomers, n-butyl acetate, tert-butyl acetate, and sec-butyl. butyl acetate). This solvent has oxygen, carbon and hydrogen atoms in its structure and is highly flammable.
It dissolves well in most organic solvents, including esters and ketones, while its solubility in water is very low (0.6 g per 100 g of water).
Due to its high reactivity, isobutyl acetate should not be combined with strong oxidizing compounds such as perchlorate, peroxides, permanganates, chlorates, nitrates, chlorine, bromine and fluorine, as well as strong acids such as hydrochloric acid, sulfuric acid and nitric acid, as well as strong bases such as hydroxide and hydroxide. Embed another.
What are the safety tips that should be observed when working with isobutyl acetate?
Isobutyl acetate, depending on the amount of contact with the body or eyes, causes irritation, in some cases causes redness of the skin, if it comes in contact with the body for a long time, it is absorbed into the skin layer and its concentration in the body may be dangerous. Reach, but in very few cases leads to allergic reactions in the body.
At normal temperatures, its vapors rarely enter the respiratory system due to the fact that they do not evaporate quickly at this temperature. If they come in contact with the body, they should be washed immediately with a suitable emulsion solution. Bring and place in a convenient place. Excessive inhalation causes dizziness, nausea, as mentioned, in case of contact with the eyes, it causes irritation and redness, which should be washed with plenty of water and if it enters the body, take the casualty to the open air. He controlled the respiratory system and performed artificial respiration if necessary, and immediately went to the first medical center after first aid.
Isobutyl acetate is a biodegradable compound that decomposes over time as it penetrates the soil, but may damage soil vegetation, causing death or damage to aquatic life if it enters the aquatic ecosystem.
Storage conditions of isobutyl acetate:
As mentioned, isobutyl acetate is a flammable solvent, its flash temperature is ℃ 22 (the lowest temperature at which the liquid ignites) and it is therefore recommended that storage tanks of this solvent away from heat sources, direct sunlight and outdoors. Or keep in a well-ventilated closed environment. In the event of a fire, use an alcohol-free powder or foam and carbon dioxide capsule. Physical damage to the tanks containing this solvent should be prevented and fire extinguishing equipment should be installed next to these tanks. .
In the event of a small spillage or leak on the ground, staff should wear appropriate clothing and remove heat sources from the scene of the accident, and clear the area of solvent as soon as possible, which can be used for absorption, because ISO Butyl acetate stays afloat, if it penetrates the aquatic environment it is likely to move to the source of the fire and cause a flame, which should prevent such incidents.
Major diffusion or leakage of this solvent occurs infrequently, but it is probable and precautions should be taken in its storage. In case of such incidents, the leakage source should be blocked first, and in the shortest time, this solvent should be removed from the ground or environment where It has been spread, collected, in the next steps, the collected solvent can be regenerated, but its disposal requires environmental considerations, firefighting equipment must be deployed at the same time and firefighters must be removed from the scene.
In the event of a fire, unauthorized entry into the fire area, its hot vapors, because they are heavier than air, can travel long distances and with a mixture of air to wherever they reach, there is a possibility of fire that ignites even by discharging electricity. . This should be anticipated and prevented, the use of direct water flow may cause the fire to spread. The use of foam and powder are suitable cases in case of fire of this solvent.