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化工社化工社 化学情報印刷レポート · 研究参考用
HCID 8038作成日：2026年10月27日

酢酸イソブチル

酢酸イソブチル · イソブチルアセテ-ト · 酢酸ISO-ブチル · 酢酸2-メチルプロピル · 2-METHYLPROPYL ACETATE · Acetic acid, 2-methylpropyl ester · 2-METHYL-1-PROPYL ACETATE · i-Butyl acetate

https://huagongshe.com/ja/chemical/8038

酢酸イソブチル の分子構造式

識別子と物理属性

CAS No.110-19-0
分子式C6H12O2
平均分子量116.16 g/mol
単同位体質量116.08372962 g/mol
SMILESCC(=O)OCC(C)C
InChIKeyGJRQTCIYDGXPES-UHFFFAOYSA-N
PubChem CID8038
ChEMBLCHEMBL46999
ChEBICHEBI:50569
EC No.203-745-1
DTXSIDDTXSID5026837
現地名酢酸イソブチル

化学・物理的性質

XLogP1.8
極性表面積26.3
水素結合供与体数0
水素結合受容体数2
回転可能結合数3
重原子数8
形式電荷0
複雑度76.6
物質分類Flammable agents - 3rd degreeVolatile Organic Compound (VOC)
SolventsSolvents -> Esters (<C12)
化粧品Cosmetic ingredients (Isobutyl Acetate) -> CIR (Cosmetic Ingredient Review)Solvent
pHNeutral5 (4g/l, H2O, 20℃)
SpringerMaterials PropertiesBoiling point
香料Fragrance Ingredient (Isobutyl acetate) -> IFRA transparency List
LogP（分配係数）log Kow = 1.781.60
臭いFruit-like odorFruity, floral odorFRUITY (CURRANT-PEAR), FLORAL (HYACINTH-ROSE) ODORSOLVENTY NAIL POLISH-LIKE ODOR低濃度で心地よいフルーティーな香り、高濃度で不快な香り、マイルドな特徴的なエステル、残留物なし。
味CHARACTERISTIC ETHER-LIKE, SLIGHTLY BITTER FLAVORBANANA TASTE
食品添加物FLAVORING AGENT OR ADJUVANT -> FDA Substance added to food
密度0.871 at 68 °F (USCG, 1999) - Less dense than waterwill float0.8712 g/cu cm at 20 °CBulk density: 7.23 lb/galDENSITY OF SATURATED AIR: 1.08 (AIR = 1)CONVERSION FACTORS: 1 MG/L IS EQUIVALENT TO 211 PPM1 PPM IS EQUIVALENT TO 4.75 MG/CU MRelative density (water = 1): 0.870.862-0.8710.867 g/mL at 25 °C (lit.)
香味料EU Flavoring substances
融点-99 °C (lit.)
沸点115-117 °C (lit.)
蒸気密度>4 (vs air)
蒸気圧15 mm Hg ( 20 °C)
屈折率n20/D 1.39(lit.)
FEMA2175 | ISOBUTYL ACETATE
引火点71 °F
貯蔵条件Store below +30°C.
溶解度水：20℃で可溶5.6g/L7g/L(20℃)
外観・状態液体
色クリア
においのタイプフルーティーな
臭気閾値0.008ppm
由来生物synthetic
爆発限界2.4-10.5%(V)
比熱容量Cp(liquid): 2.01 J/(g·K), at 25℃
Merck14,5130
JECFA Number137
BRN1741909
ヘンリー定数(x 10-4 atmm3/mol): 4.85 at 25 °C (approximate - calculated from water solubility and vapor pressure)
誘電率5.6(20℃)
主な用途フレーバーそして香料
化粧品成分の機能溶媒香料
InChI1S/C6H12O2/c1-5(2)4-8-6(3)7/h5H,4H2,1-3H3
InChIKeyGJRQTCIYDGXPES-UHFFFAOYSA-N
SMILESCC(C)COC(C)=O
LogP（分配係数）2.3 at 25℃
表面張力23.15mN/m at 298.15K
CAS データベース110-19-0(CAS DataBase Reference)
NISTの化学物質情報Isobutyl acetate(110-19-0)
EPAの化学物質情報Isobutyl acetate (110-19-0)

化学的特性

Isobutyl acetate is a colorless liquid with a fruit flavor. Isobutyl acetate is moisture sensitive, incompatible with ignition sources, moisture, excess heat, strong oxidizing agents, and strong bases; on decomposition, it releases carbon monoxide and carbon dioxide. It is used for nitrification fiber and paint solvents, chemical reagents, and modulation spices

安全性と法規制

GHS 分類DangerH225: Highly Flammable liquid and vapor [Danger Flammable liquids]P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)This chemical does not meet GHS hazard criteria for 6% (177 of 2941) of reports.H225 (94%): Highly Flammable liquid and vapor [Danger Flammable liquids]
規制情報Chemical: Acetic acid, 2-methylpropyl esterRegulation (EC) No 178/2002 (amended)Acetic acid, 2-methylpropyl ester is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Acetic acid, 2-methylpropyl ester are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 14-12-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/14421Acetic acid, 2-methylpropyl ester: HSNO Approval: HSR001092 Approved with controlsThe New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)
その他の安全情報IMAP assessments - Acetate esters (C2-C4): Human health tier II assessment
輸送ラベル（DOT）Flammable Liquid
火災危険Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:· HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.Highly flammable. Vapour/air mixtures are explosive.
火災の可能性A very dangerous fire and moderate explosion hazard when exposed to heat, flame, or oxidizers.Highly flammable liquid
健康有害性Vapors may irritate upper respiratory tract and cause nausea, vomiting, dizziness and loss of consciousness. Liquid irritates eyes and may irritate skin. (USCG, 1999)· May cause toxic effects if inhaled or absorbed through skin.
有害性の概要A skin, eye, and respiratory tract irritantInhalation of high concentrations can cause CNS depression[ICSC]

用途

解説

酢酸イソブチル (英: Isobutyl acetate) とは、カルボン酸エステルに分類され、化学式C6H12O2で表される有機化合物の1種です。 IUPAC命名法による名称は酢酸 2-メチルプロピルであり、その他の別名に、酢酸2-メチルプロピルエステル、ブチルエタノエートという名称があります。CAS登録番号は110-19-0です。 カルボン酸エステル特有の果実臭を特徴としており、バナナの香りの主成分であるとされています。

用途

香料原料、塗料

用途

農薬(殺菌剤)、農薬原料、医薬、防腐剤、化学繊維製造凝固剤、メッキ、蛍光隊原料、飼料添加物

説明

Isobutyl acetate has a fruity (currant-pear), floral (hyacinth-rose) odor and a characteristic ether-like, slightly bitter flavor. May be prepared by direct esterification of isobutyl alcohol with acetic acid.

天然物の起源

Reported found in, apple, apricot, banana, currants, guava, grapes, melon, pear, blackcurrant, papaya, pineapple, strawberry, vinegar, wheat bread, Parmesan and Gruyere cheese, beef fat, beer, cognac, rum, cider, whiskies, sherry, grape wines, port, olive, cocoa, passion fruit, plum, starfruit, bantu beer, plum and grape brandy, mango, tamarind, apple brandy, figs, plum wine, litchi, sake, nectarine, naranjilla fruit, Cape gooseberry and Roman chamomile oil.

使用

Isobutyl Acetate is a flavoring agent that is a clear colorless liquid with a fruity odor resembling banana when diluted. it is soluble in alcohol, propylene glycol, most fixed oils, and mineral oil, and slightly soluble in water. it is obtained by synthesis.

一般的な説明

A clear colorless liquid with a fruity odor. Flash point 64°F. Less dense than water (6.2 lb / gal) and insoluble in water. Vapors are heavier than air .

使用用途

図2. 酢酸イソブチルとフェニル酢酸イソブチルの構造 酢酸イソブチルは、主に化学工業において、脱水剤、塗料 (・など) ・インキ用溶剤、、反応溶媒、抽出溶剤、化学繊維製造凝固剤、メッキ、蛍光体原料などの幅広い用途を持つ物質です。酢酸イソブチルは、エステル類特有の果実臭を持つため、香水や食品添加物としても用いられます。 なお、関連物質であるα位がフェニル基で置き換わったフェニル酢酸イソブチルは、バラの香りの香料として、食品衛生法で食品添加物に指定されている物質です。それ以外の酢酸イソブチルの用途としては、農薬 (殺菌剤) 、農薬原料、医薬、飼料添加物などの用途が挙げられます。

製法・合成法

製造方法

By direct esterification of isobutyl alcohol with acetic acid.

調製方法

Isobutyl acetate may be made from methyl isobutyl ketone. It may also be made by treating isobutanol with acetic acid in the presence of catalysts. The Tischenko reaction of acetaldehyde with isobutyraldehyde yields a mixture of isobutyl acetate with ethyl acetate and isobutyl isobutyrate.

輸送番号・ガイド（DOT）1213 129
FDA 要件Isobutyl acetate is a food additive permitted for direct addition to food for human consumption, as long as 1) the quantity added to food does not exceed the amount reasonably required to accomplish its intended physical, nutritive, or other technical effect in food, and 2) when intended for use in or on food it is of appropriate food grade and is prepared and handled as a food ingredient. Isobutyl acetate synthetic flavoring substances & adjuvants may be safely used in food in accordance with the following conditions ... They consist of one or more of the following /substances including isobutyl acetate/ used alone or in combination with flavoring substances generally recognized as safe in food, or regulated by an appropriate section in this part.
反応性グループEsters, Sulfate Esters, Phosphate Esters, Thiophosphate Esters, and Borate Esters
EC 分類Symbol: FR: 11-66S: (2)-16-23-25-29-33Note: C
UN 分類UN Hazard Class: 3UN Pack Group: II
消火Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:Use foam, alcohol-resistant foam, dry powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.
応急処置措置Fresh air, rest. Refer for medical attention.Remove contaminated clothes. Rinse and then wash skin with water and soap.First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.Rinse mouth. Do NOT induce vomiting. Refer for medical attention .
漏出応急措置· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.
応急処置Excerpt from NIOSH Pocket Guide for Isobutyl acetate:General First Aid:(General first aid procedures)
安全保管Fireproof. Separated from strong oxidants, strong bases and strong acids.
Firefighting HazardsFlashback along vapor trail may occur.The vapors are heavier than air.
暴露管理・個人防護· Wear positive pressure self-contained breathing apparatus (SCBA).100.0 [ppm]
消火手順To fight fire, use alcohol foam, CO2, dry chemical.Water may be ineffective on fire /involving isobutyl acetate/. Cool exposed containers with water.If material on fire or involved in fire: Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may spread fire. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide.Fire Fighting: Use self-contained breathing apparatus with a full facepiece operated in pressure-demand or other positive pressure mode.
保管条件... MATERIALS WHICH ARE TOXIC AS STORED OR WHICH CAN DECOMPOSE INTO TOXIC COMPONENTS ... SHOULD BE STORED IN A COOL WELL VENTILATED PLACE, OUT OF THE DIRECT RAYS OF THE SUN, AWAY FROM AREAS OF HIGH FIRE HAZARD, AND SHOULD BE PERIODICALLY INSPECTED. INCOMPATIBLE MATERIALS SHOULD BE ISOLATED ...
清掃方法1. Remove all ignition sources. 2. Ventilate area of spill or leak. 3. For small quant, absorb on paper towels. Evaporate in a safe place (such as a fume hood). Allow sufficient time for evaporating vapors to completely clear the hood ductwork. Burn the paper in a suitable location away from combustible materials. Large quantities can be collected and atomized in a suitable combustion chamber. Isobutyl acetate should not be allowed to enter a confined space, such as a sewer, because of the possibility of an explosion.Environmental considerations: Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material /SRP: If time permits, pits, ponds, lagoons, soak holes, or holding areas should be sealed with an impermeable flexible membrane liner./ Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash or cement powder. Apply appropriate foam to diminish vapor and fire hazard.Environmental considerations: Water spill: Use natural barriers or oil spill control booms to limit spill motion. Use surface active agent (eg detergent, soaps, alcohols), if approved by the EPA.. Inject "universal" gelling agent to solidify encircled spill and increase effectiveness of booms. If dissolved, in region of 10 ppm or greater concentration, apply activated carbon at ten times the spilled amount . Remove trapped material with suction hoses. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.Environmental considerations: Air spill: Apply water spray to mist to knock down vapors.
非火災時の漏出対応Excerpt from ERG Guide 129 [Flammable Liquids (Water-Miscible / Noxious)]:
処分方法SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air qualitypotential migration in soil or watereffects on animal and plant lifeand conformance with environmental and public health regulations.Isobutyl acetate is a waste chemical stream constituent which may be subjected to ultimate disposal by controlled incineration.SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal. If it is not practicable to manage the chemical in this fashion, it must be evaluated in accordance with EPA 40 CFR Part 261, specifically Subpart B, in order to determine the appropriate local, state and federal requirements for disposal./Proposed methods of disposal should be used on statutory requirements of the state where disposal is to occur. The usual methods would be expected to include:/ 1) Absorbing in vermiculite, dry sand, earth or a similar material and disposing in a secured sanitary landfill. 2) Atomizing in a suitable combustion chamber.The following wastewater treatment technologies have been investigated for Isobutyl acetate: Concentration process: Activated carbon.
標的器官Eyes, skin, respiratory system, central nervous system
生態毒性値LC50Species: Chlorococcales (Green Algae Order)Conditions: freshwater, staticConcentration: 600000 ug/L for 24 hr /formulation/Species: Daphnia magna (Water Flea) age < or =24 hrConditions: freshwater, static, 20-22 °CConcentration: 250000 ug/L for 24 hr /formulation/TLm Brine shrimp 1200 ppm/24 hr /Conditions of bioassay not specified/
環境中動態TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 16(SRC), determined from a structure estimation method(2), indicates that isobutyl acetate is expected to have very high mobility in soil(SRC). Volatilization of isobutyl acetate from moist soil surfaces is expected to be an important fate process(SRC) given a Henry's Law constant of 4.54X10-4 atm-cu m/mole(3). Isobutyl acetate is expected to volatilize from dry soil surfaces(SRC) based upon a vapor pressure of 17.8 mm Hg at 25 °C(4). Biodegradation is expected to occur based upon theoretical BODs of 60% and 81% in 5- and 20-day, respectively, fresh water dilution tests(5).AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 16(SRC), determined from a structure estimation method(2), indicates that isobutyl acetate is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is expected(3) based upon a Henry's Law constant of 4.54X10-4 atm-cu m/mole(4). Using this Henry's Law constant and an estimation method(3), volatilization half-lives for a model river and model lake are 5.2 hours and 4.9 days, respectively(SRC). According to a classification scheme(5), an estimated BCF of 7(SRC), from its log Kow of 1.78(6) and a regression-derived equation(7), suggests the potential for bioconcentration in aquatic organisms is low(SRC). Biodegradation is expected to occur based upon theoretical BODs of 60% and 81% in 5- and 20-day, respectively, fresh water dilution tests(8). Hydrolysis is expected to occur slowly based upon estimated hydrolysis half-lives of 3 years and 122 days at pH 7 and 8, respectively(9).ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), isobutyl acetate, which has a vapor pressure of 17.8 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase isobutyl acetate is degraded in the atmosphere by reaction with photochemically-produced hydroxyl radicals(SRC)the half-life for this reaction in air is estimated to be 2.9 days(SRC), calculated from its rate constant of 5.52X10-12 cu cm/molecule-sec at 25 °C(3). Isobutyl acetate does not contain chromophores that absorb at wavelengths >290 nm(4) and therefore is not expected to be susceptible to direct photolysis by sunlight(SRC).
食品調査値Isobutyl acetate has been identified, not quantified, in apples(1), nectarines(2), store bought milk(3) and bananas(4).
有害作用Neurotoxin - Acute solvent syndrome
暴露経路The substance can be absorbed into the body by inhalation of its vapour.inhalation, ingestion, skin and/or eye contact
Milk ConcentrationsIsobutyl acetate has been identified, not quantified, in store purchased milk(1).
毒性の概要Safe in the present practices of use and concentration. Ingredient, concentration, and use information are available in documents discoverable at https://cir-reports.cir-safety.org
Signs and SymptomsCough. Sore throat. Dizziness. Headache.Dry skin.Redness.Nausea.irritation eyes, skin, upper respiratory systemheadache, drowsiness, anesthesiaIn Animals: narcosis
Effluent ConcentrationsIsobutyl acetate was detected at a mean concentration of 0.23 ug/cu m in the effluent of a waste incinerator in Germany(1). An accidental spill at the BASF plant in Germany released an unspecified concentration of isobutyl acetate into the Rhine River in 1991(2). Isobutyl acetate was identified, not quantified, in the effluent of common household waste(3). UK emissions of isobutyl acetate were reported as 0.44% by mass distribution in 1990(4). Isobutyl acetate was detected in 15 of 44 furniture emission samples(5). Isobutyl acetate was detected but not quantified in the emissions of kitchen waste, kitchen waste exudate and stored food exudate(6).
Medical SurveillanceConsider initial effects on skin and resp tract in any preplacement or periodical exam, as well as liver and kidney function.
Soil Adsorption/MobilityUsing a structure estimation method based on molecular connectivity indices(1), the Koc of isobutyl acetate can be estimated to be 16(SRC). According to a classification scheme(2), this estimated Koc value suggests that isobutyl acetate is expected to have very high mobility in soil.
大気基準This action promulgates standards of performance for equipment leaks of Volatile Organic Compounds (VOC) in the Synthetic Organic Chemical Manufacturing Industry (SOCMI). The intended effect of these standards is to require all newly constructed, modified, and reconstructed SOCMI process units to use the best demonstrated system of continuous emission reduction for equipment leaks of VOC, considering costs, non air quality health and environmental impact and energy requirements. Isobutyl acetate is produced, as an intermediate or final product, by process units covered under this subpart.
CERCLA 報告数量Persons in charge of vessels or facilities are required to notify the National Response Center (NRC) immediately, when there is a release of this designated hazardous substance, in an amount equal to or greater than its reportable quantity of 5000 lb or 2270 kg. The toll free number of the NRC is (800) 424-8802. The rule for determining when notification is required is stated in 40 CFR 302.4 (section IV. D.3.b).
清浄水法要件Isobutyl acetate is designated as a hazardous substance under section 311(b)(2)(A) of the Federal Water Pollution Control Act and further regulated by the Clean Water Act Amendments of 1977 and 1978. These regulations apply to discharges of this substance. This designation includes any isomers and hydrates, as well as any solutions and mixtures containing this substance.
職業暴露区分（OEB）A
職業暴露限界（OEL）TWA: 150 ppm (700 mg/m3)
水環境危害等級（WGK）1
生命健康即時危険濃度1,300 ppm [10% LEL]
TSCA 収載状態TSCA listed
RTECS 番号AI4025000
輸送番号（UN）UN 1213
毒性LD50 orally in Rabbit: 13400 mg/kg LD50 dermal Rabbit > 17400 mg/kg
税関コード2915 39 00
危険文句（R）11-66
化審法(2)-731
安衛法有機則 第二種有機溶剤等
消防法危険物第4類第二石油類(非水溶性)
危険表示F
安全措置（S）16-23-25-29-33
危険等級3Flam. Liq. 2STOT SE 3
包装等級II
自然発火温度793 °F
貯蔵分類3 - Flammable liquids
有害物質データ110-19-0(Hazardous Substances Data)