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China, Chinese N-Butyl Acetate Quality and Cheap Factory Price CAS 123-86-41 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Organic ChemicalsEster DerivativeN-Butyl AcetateC6h12o2
Shandong Dexiang International Trade Co., Ltd
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Product Description N-butyl acetate, abbreviated as butyl acetate. A colorless, transparent liquid with a pleasant fruity aroma. Lower-grade homologues are insoluble in water. It is miscible with organic solvents such as alcohols, ethers and ketones. Flammable. The acute toxicity is relatively low, but it has a strong irritant effect on the eyes and nose, and can cause anesthesia at high concentrations. N-butyl acetate is an excellent organic solvent and has good solubility for ethyl cellulose, cellulose acetate butyrate, polystyrene, methacrylic resin, chlorinated rubber and many natural gums.Basic IntroductionN-butyl acetate, abbreviated as butyl acetate, CH3COO(CH2)3CH3.Folding chemical formulaStructural formula: CH3COO(CH2)3CH3Molecular formula: C6H12O2Physical and chemical propertiesBoiling point: 126oCFreezing point: -77.9oCChen Xiao and Chen Yanxi got marriedChen Xiao and Chen Yanxi got marriedRelative density: 0.8825Refractive index: 1.3951[1]Flash point: 33oCFreezing point - 73.5 oCBoiling point: 126.11 oCFlash point (open)33oCIgnition point: 421oCRefractive index 1.3941Specific heat capacity (at 20 oC) 1.91 kJ/kg? K)Viscosity (20oC)0.734mPasThe solubility parameter δ= 8.5.Folded relative molecular mass116.16Specific gravity0.872-0.885TraitColorless and transparent liquid. It has a fruity aroma. It is miscible with ethanol and ether, soluble in most hydrocarbon compounds, and dissolves in approximately 120 parts of water at 25oC. Relative density (d2020)0.8826. Freezing point -77oC. Boiling point: 125-126oC. Refractive index (n20D)1.3951. Flash point (closed cup) 22oC. Flammable. Its vapor can form explosive mixtures with air, with an explosion limit of 1.4% to 8.0%(by volume). Stimulating. It is anesthetic at high concentrations.StorageStore in a sealed, cool and dry place.Production methodIt is obtained by the esterification of acetic acid and n-butanol in the presence of sulfuric acid. Butanol, acetic acid and sulfuric acid are added to the esterification kettle in proportion and esterification is carried out at 120oC. After reflux dehydration, the acid value during esterification is controlled below 0.5. The obtained crude ester is neutralized and then enters the distillation kettle. After distillation, condensation and separation, reflux dehydration is carried out to recover the alcohol ester. Finally, the product is obtained by distillation at a temperature below 126oC. The production processes include continuous and intermittent methods, depending on the production scale. Raw material consumption quota: 540kg/t of acetic acid (98%), 650kg/t of n-butanol. In recent years, scientific research reports on the development and application of solid acids, heteropoly acids, etc. to replace sulfuric acid catalysts for reducing equipment corrosion have been increasing day by day, but there have been no reports of successful application in industrial production yet.Safety measuresStore in a cool and well-ventilated place, away from sources of ignition and heat. Store and transport separately from oxidants, acids, bases, etc. The use of tools that can easily produce sparks is prohibited.Fire extinguishing: Resistant foam, carbon dioxide, dry powder, sand and soil.Fire extinguishing methodsFlammability: FlammableFlash point (oC) : 22Lower explosive limit (%) : 1.2Explosion upper limit (%) : 7.5Fire extinguishing agents: alcohol-resistant foam, carbon dioxide, dry powder, sand.Fire extinguishing precautions: Using water to put out the fire is ineffective, but water can be used to keep containers in the fire scene cool.Emergency treatmentSkin contact: Remove contaminated clothing and thoroughly wash the skin with soapy water and clean water.Eye contact: Immediately lift the eyelids and rinse with plenty of running water or physiological saline for at least 15 minutes. Seek medical treatment.Inhalation: Quickly move to a place with fresh air. Keep the airway unobstructed. If breathing is difficult, administer oxygen. If breathing stops, perform artificial respiration immediately. Seek medical treatment.Ingestion: Drink plenty of warm water and induce vomiting.Fire protection measuresFlammable. Its vapor can form explosive mixtures with air. It can cause combustion and explosion when exposed to open flames or high heat. It can react strongly with oxidants. Its vapor is heavier than air and can spread to a considerable distance at lower levels. When exposed to a fire source, it will ignite and reignite.Harmful combustion products: carbon monoxide, carbon dioxide.Fire extinguishing methodsFire extinguishing can be carried out by using alcohol-resistant foam, carbon dioxide, dry powder and sand. Water is ineffective in extinguishing the fire, but it can be used to keep the containers in the fire scene cool.Emergency responseEvacuate personnel from the contaminated area of the leakage to a safe zone immediately and isolate the area, strictly restricting entry and exit. Cut off the source of fire. It is recommended that emergency response personnel wear self-contained positive pressure breathing apparatus and anti-static work clothes. Cut off the source of leakage as much as possible. Prevent the flow into sewers, flood drainage ditches and other restricted Spaces.Small amount of leakageAbsorb with activated carbon or other inert materials. It can also be rinsed with a large amount of water, and the diluted rinse water should be discharged into the wastewater system.Massive leakageBuild embankments or dig pits for containment. Cover with foam to reduce vapor hazards. Transfer to tank trucks or special collectors by explosion-proof pumps for recovery or transportation to waste treatment facilities for disposal.Purification methodVacuum distillation methodButyl acetate is washed with an equal volume of sodium carbonate solution (5%), dried with anhydrous calcium chloride, and then distilled. When the drying requirement is strict, phosphorus pentoxide can be added for drying, filtration, and distillation under conditions isolated from moisture. It can also be extracted and washed twice with saturated sodium bicarbonate solution, then dried with anhydrous magnesium sulfate and distilled.1 - Water bath 2-1000 ml Claisen flasks 3 - Capillary tube 4 - Thermometer 0-100oC 5 - Spherical condenser tube 6 - Receiver 7 - Heating coil 8 - Connect the voltage regulating transformer; 9 - Connect the vacuum pump;a, b - Two-way pistons; c - Three-way pistonPlace 500ml of washed and dried butyl acetate in a flask, connect the distillation device, open pistons a, b and c, start the vacuum pump to extract the air in the system. When the pressure in the system reaches 7998Pa, connect the power supply of the constant temperature water bath, control the temperature at 60-70oC, and the distillation speed is 1-2 drops per second. After 50-60ml has been distilled, close piston A. Connect the piston c to the atmosphere, remove the receiving flask, discard the first section of the distillate, reinstall and connect c, connect the receiving flask to the pump, and continue the distillation. Stop the distillation when 300 to 350ml of the distillate has been distilled out. This middle section of the fraction is the refined product. Note that the water bath temperature should be determined according to the size of the vacuum degree and should be based on the distillation speed.(2) Recovery of butyl acetateThe waste liquid of butyl peracetate is washed several times in a separating funnel with water, then washed several times with a dilute solution of sodium thiosulfate to decolorize it, and washed several times with water again. Finally, it is distilled and purified as per (1). [3]Disposal and storagePrecautions for operationOperate in a closed system with general ventilation. Operators must undergo specialized training and strictly abide by the operating procedures. It is recommended that operators wear self-priming filtering gas masks (half masks), chemical safety goggles, anti-static work clothes and rubber oil-resistant gloves. Keep away from sources of ignition and heat. Smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent steam from leaking into the air of the workplace. Avoid contact with oxidants, acids and alkalis. When filling, the flow rate should be controlled and there should be a grounding device to prevent the accumulation of static electricity. When handling, load and unload gently to prevent damage to the packaging and containers. Equip with corresponding types and quantities of fire-fighting equipment and leakage emergency handling devices. Empty containers may still contain harmful substances.PrecautionsStore in a cool and well-ventilated warehouse. Keep away from fire sources and heat sources. The temperature in the warehouse should not exceed 30oC. Keep the container sealed. It should be stored separately from oxidants, acids and alkalis. Mixing storage is strictly prohibited. Adopt explosion-proof lighting and ventilation facilities. The use of mechanical equipment and tools that can easily produce sparks is prohibited. The storage area should be equipped with emergency handling equipment for leakage and suitable containment materials.Introduction to UsageUse solvents for expanding nitrocellulose and paints. It is commonly used as a fruit essence, mainly for formulating banana, raspberry, strawberry and cream types of essences.Preparation sourceIn addition to being synthesized, it also exists naturally in fruits such as apples and bananas.PreparationIt is obtained by the esterification of isobutanol and acetic anhydride under the catalysis of sulfuric acid.Patent technology of butyl acetate [4]The method and equipment for separating butyl acetate from the residual phase wastewater of penicillin fermentation liquid extractionThe apparatus and process for producing high-purity butyl acetate in a single distillation columnMethods for furfural wastewater treatment and recovery of butyl acetate, ammonium sulfate, ammonium acetate, acetamide and acetonitrileThe process of treating furfural industrial wastewater and preparing butyl acetateContinuous production process of butyl acetateThe method for continuous production of butyl acetateA method for recovering butyl acetate from the production process of antibioticsA method for synthesizing butyl acetate through gas-phase catalytic esterification reactionSecurity informationPackaging grade: IIIHazard Category: 3Customs Code: 2915330000Dangerous goods transportation code: UN11233/PG3WGKGermany: 1Hazard Category code: R10 R66; R67Safety Instructions: S25RTECS number: AF7350000Customs dataChina Customs (2915390090) View More >>Overview 2915390090. Other acetate esters. Value-added tax rate :17.0%. Refund rate :13.0%. Regulatory conditions :AB(Entry Goods Customs clearance Form, Exit Goods customs clearance Form). Most-favored-nation tariff :5.5%. Ordinary tariff :30.0%Summary2915390090. esters of acetic acid. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:5.5%. General tariff:30.0%
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