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Determination of Ethyl Acetate Using Ultraviolet Spectrophotometry

Keywords: ultraviolet spectrophotometer; ethyl acetate; US analytical instrument; UV-1700; UV-1800

Ethyl acetate (EA) is a colorless, transparent, and aromatic liquid with excellent solubility and fast evaporation. It is an important organic chemical raw material and widely used as an industrial solvent in the production of cellulose fibers, synthetic rubbers, paints, and resins. There are various methods for synthesizing EA, including traditional techniques like cooling reactions. However, these methods can be time-consuming and inefficient. To develop a more efficient and accurate method for determining ethyl acetate content, a rapid analytical approach using UV-visible spectrophotometry was proposed. The method involved a colorimetric reaction between ethyl acetate, hydroxylamine ethanol, and FeClâ‚ƒ, forming a magenta complex. This complex exhibited maximum absorption at 530 nm. A dual-wavelength spectrophotometric technique was employed to establish a linear relationship between the absorbance difference at 530 nm and 800 nm and the concentration of ethyl acetate. This allowed for precise quantification of EA content. The procedure was found to be simple, fast, and effective when the FeClâ‚ƒ/EA molar ratio was â‰¥1.1, the boiling water bath temperature was maintained at 100Â°C, and the reaction time was 40 seconds, with color development completed within 60 seconds. The accuracy of the method was validated using a ketone-hydrogen peroxide reaction system. The relative deviation was 1.79%, and the recovery rate ranged from 95.5% to 105.0%. This method offers a reliable and practical alternative for the rapid determination of ethyl acetate in industrial and analytical settings. Keywords: ultraviolet spectrophotometer; ethyl acetate; US analytical instrument; UV-1700; UV-1800

YESWITCH FD01 Snap Mount Plunger Safety Seat Switch

YESWITCH FD01 plunger snap mount safety seat momentary switches sense operator presence. With Normally Open Normally Open function,used in conjunction with a machine or vehicle`s safety system, operator presence switches provide a fail-safe condition (shutting down the engine, turning off cutting blades, etc.) when an equipment operator is no longer in the seat. Sealed, unsealed and high-cycle-life Hall Effect styles are available. Choose from twist lock or bolt mounting. With decades of proven reliability, our double pole push button switches are ideal for lawn mowers,golf cart and electric-powered applications.

SPECIFICATIONS
RATING: DC12V,3A
CONTACT RESISTANCE: 100m MAX.
INSULATION RESISTANCE: 1000M MIN.
DIELECTRIC STRENGTH: 1000Vrms min.
OPERATING FORCE: 2.0Kgf
OPERATING TEMP: -40~+85 Degree
MECHANICAL LIFE: 75,000 CYCLES

MATERIALS
HOUSING: Nylon,Black.
PLUNGER: PBT, Gray.
CASE: Nylon,Gray

TYPICAL APPLICATIONS INCLUDE
Outdoor Power Equipment,Utility Vehicles,Power Sports,Construction,Farm & Agricultural,Asphalt Pavers/Concrete Mixes,Light Industrial,Material Handling
Off-Highway Vehicles,Mining

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YESWITCH ELECTRONICS CO., LTD. , https://www.yeswitches.com