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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 6506作成日：2026年10月27日

くえん酸トリエチル

くえん酸トリエチル · 2-ヒドロキシ-1,2,3-プロパントリカルボン酸トリエチル · 3-(エトキシカルボニル)-3-ヒドロキシペンタン二酸ジエチル · シトロフレックス2 · くえん酸エチル · クエン酸三エチル · トリエチル＝2-ヒドロキシ-1，2，3-プロパントリカルボキシラート · シトロフレックス 2

https://huagongshe.com/ja/chemical/6506

くえん酸トリエチル の分子構造式

識別子と物理属性

CAS No.77-93-0
分子式C12H20O7
平均分子量276.28 g/mol
単同位体質量276.12090298 g/mol
SMILESCCOC(=O)CC(O)(CC(=O)OCC)C(=O)OCC
InChIKeyDOOTYTYQINUNNV-UHFFFAOYSA-N
PubChem CID6506
ChEMBLCHEMBL464988
ChEBICHEBI:168426
EC No.201-070-7
DTXSIDDTXSID0040701
現地名くえん酸トリエチル

化学・物理的性質

XLogP0.1
極性表面積99.1
水素結合供与体数1
水素結合受容体数7
回転可能結合数11
重原子数19
形式電荷0
複雑度304
物質分類Other Classes -> Other Organic CompoundsWaste-water effluent contaminant
PolymersPlastics -> PURPVC (soft)Plastics -> Plasticisers
化粧品Cosmetic ingredients (Triethyl Citrate) -> CIR (Cosmetic Ingredient Review)SolventPlasticiserAntioxidantDeodorant
SpringerMaterials PropertiesBoiling point
香料Fragrance Ingredient (Triethyl citrate) -> IFRA transparency List
臭いFruity odor無臭
PlasticizersPlasticizer
味Bitter taste
食品添加物FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, FORMULATION AID, SEQUESTRANT, SOLVENT OR VEHICLE -> FDA Substance added to food
密度1.1369 g/cu cm at 20 °CRelative density (water = 1): 1.11.138-1.1391.14 g/mL at 25 °C (lit.)
香味料EU Flavoring substances
Viscosity35.2 cP at 25 °C
融点-55 °C
沸点235 °C/150 mmHg (lit.)
蒸気密度9.7 (vs air)
Pour Point-46
蒸気圧1 mm Hg ( 107 °C)
屈折率n20/D 1.442(lit.)
FEMA3083 | TRIETHYL CITRATE
引火点>230 °F
貯蔵条件Store below +30°C.
溶解度H2O: 可溶5.7g/100mL(25℃)
外観・状態液体
pKa（酸解離定数）11.57±0.29(Predicted)
色クリア
由来生物synthetic
凝固点-55℃
Merck14,2326
JECFA Number629
BRN1801199
主な用途フレーバーそして香料
化粧品成分の機能粘度制御デオドラント香料可塑剤溶媒香料
InChI1S/C12H20O7/c1-4-17-9(13)7-12(16,11(15)19-6-3)8-10(14)18-5-2/h16H,4-8H2,1-3H3
InChIKeyDOOTYTYQINUNNV-UHFFFAOYSA-N
SMILESCCOC(=O)CC(O)(CC(=O)OCC)C(=O)OCC
LogP（分配係数）1.267 (est)
CAS データベース77-93-0(CAS DataBase Reference)
NISTの化学物質情報Ethyl citrate(77-93-0)
EPAの化学物質情報Triethyl citrate (77-93-0)

化学的特性

Triethyl citrate is a clear, viscous, odorless, and practically colorless, hygroscopic liquid.

安全性と法規制

GHS 分類This chemical does not meet GHS hazard criteria for 96.4% (1942 of 2014) of all reports.Not ClassifiedAggregated GHS information provided per 2014 reports by companies from 5 notifications to the ECHA C&L Inventory.WarningH332: Harmful if inhaled [Warning Acute toxicity, inhalation]
規制情報Chemical: 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, triethyl ester1,2,3-Propanetricarboxylic acid, 2-hydroxy-, 1,2,3-triethyl ester is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, 1,2,3-triethyl 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: 01-12-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/14584Ethyl citrate: Does not have an individual approval but may be used under an appropriate group standard
その他の安全情報IMAP assessments - 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, triethyl ester: Human health tier I assessment
火災危険Combustible.
火災の可能性Combustible liquid when exposed to heat or flame.
有害性の概要Safe when used as a flavoring agent in food[JECFA] Effects in lethal-dose studies include somnolence, ataxia, and convulsions[RTECS] An eye and respiratory tract irritant[ICSC] May cause irritationEffects in high-dose animal studies include convulsions[MSDSonline]
FDA 要件An ingredient whose use in food or food packaging is subject to a prior sanction or approval within the meaning of section 201(s)(4) of the Act is exempt from classification as a food additive. ... Substances classified as plasticizers, when migrating from food-packaging material shall include ... triethyl citrate.Substance added directly to human food affirmed as generally recognized as safe (GRAS).
EPA Safer ChemicalChemical: Triethyl citrate
FIFRA 要件

用途

天然物の起源

Reported found in Morello cherry, sour cherry and red currant. Also reported found in raw cabbage and white wine.

使用

Triethyl Citrate is a sequestrant that is an oily liquid, slightly solu- ble in water. it is found in lemon drinks.

一般的な説明

Triethyl citrate is a safe direct food additive.

製法・合成法

調製方法

Triethyl citrate is prepared by the esterification of citric acid and ethanol in the presence of a catalyst.

製造方法

By esterification of ethyl alcohol with citric acid.

Unless specifically excluded, residues resulting from the use of the following substance as either an inert or an active ingredient in a pesticide chemical formulation, including antimicrobial pesticide chemicals, is exempted from the requirement of a tolerance under FFDCA section 408, if such use is in accordance with good agricultural or manufacturing practices. Citric acid, triethyl ester is included on this list.
Toxic Combustion ProductsSpecial hazards arising from the substance or mixture: Carbon oxides
Hazard Classes and CategoriesNot Classified
Hazardous Reactivities and IncompatibilitiesIncompatible materials: Strong oxidizing agents
消火Use powder, carbon dioxide.
応急処置措置Fresh air, rest.Remove contaminated clothes. Rinse skin with plenty of water or shower.First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.Rinse mouth. Give one or two glasses of water to drink.
安全保管Well closed.
消火手順Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.Advice for firefighters: Wear self contained breathing apparatus for fire fighting if necessary.Use dry chemical, carbon dioxide.
保管条件Keep container tightly closed in a dry and well-ventilated place.
清掃方法Accidental release measures: Personal precautions, protective equipment and emergency procedures: Use personal protective equipment. Avoid breathing vapors, mist or gas. Ensure adequate ventilation.Environmental precautions: Do not let product enter drains.Methods and materials for containment and cleaning up: Soak up with inert absorbent material and dispose of as hazardous waste. Keep in suitable, closed containers for disposal.
処分方法SRP: 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 air, soil or watereffects on animal, aquatic and plant lifeand conformance with environmental and public health regulations. If it is possible or reasonable use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination.Product: Offer surplus and non-recyclable solutions to a licensed disposal company. Contaminated packaging: Dispose of as unused product.
漏出処分Collect leaking and spilled liquid in sealable containers as far as possible. Wash away remainder with plenty of water.
Preventive MeasuresPrecautions for safe handling: Avoid contact with skin and eyes. Avoid inhalation of vapor or mist. Normal measures for preventive fire protection.Appropriate engineering controls: Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands.
Eye PreventionWear safety spectacles or eye protection in combination with breathing protection.
Fire PreventionNO open flames.
Inhalation RiskA harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20 °C.
環境中動態TERRESTRIAL FATE: Based on a classification scheme(1), an estimated Koc value of 20(SRC), determined from a structure estimation method(2), indicates that triethyl citrate is expected to have very high mobility in soil(SRC). Volatilization of triethyl citrate from moist soil surfaces is not expected to be an important fate process(SRC) given an estimated Henry's Law constant of 3.8X10-9 atm-cu m/mole(SRC) based upon its vapor pressure, 6.87X10-4 mm Hg(3), and water solubility, 6.5X10+4 mg/L(5). Triethyl citrate is not expected to volatilize from dry soil surfaces(SRC) based upon its vapor pressure(4). Biodegradation data in soil were not available(SRC, 2015). Based on data for acetyl tributyl citrate, a structural analog, triethyl citrate may be expected to biodegrade rapidly(SRC). Utilizing the Japanese MITI test acetyl tributyl citrate, present at 100 mg/L, reached 82% of its theoretical BOD in 4 weeks using an activated sludge inoculum at 30 mg/L(5) suggesting that biodegradation of triethyl citrate may be an important environmental fate process in soil(SRC).AQUATIC FATE: Based on a classification scheme(1), an estimated Koc value of 20(SRC), determined from a structure estimation method(2), indicates that triethyl citrate is not expected to adsorb to suspended solids and sediment(SRC). Volatilization from water surfaces is not expected(3) based upon an estimated Henry's Law constant of 3.8X10-9 atm-cu m/mole(SRC) derived from its vapor pressure, 6.87X10-4 mm Hg(4), and water solubility, 6.5X10+4 mg/L(5). According to a classification scheme(6), an estimated BCF of 3(SRC), from an estimated log Kow of 0.33(2) and a regression-derived equation(2), suggests the potential for bioconcentration in aquatic organisms is low(SRC). Biodegradation data in water were not available(SRC, 2015). Based on data for acetyl tributyl citrate, a structural analog, triethyl citrate may be expected to biodegrade rapidly(SRC). Utilizing the Japanese MITI test acetyl tributyl citrate, present at 100 mg/L, reached 82% of its theoretical BOD in 4 weeks using an activated sludge inoculum at 30 mg/L(7) suggesting that biodegradation of triethyl citrate may be an important environmental fate process in water(SRC).ATMOSPHERIC FATE: According to a model of gas/particle partitioning of semivolatile organic compounds in the atmosphere(1), triethyl citrate, which has a vapor pressure of 6.87X10-4 mm Hg at 25 °C(2), is expected to exist solely as a vapor in the ambient atmosphere. Vapor-phase triethyl citrate 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 4 days(SRC), calculated from its rate constant of 7.3X10-12 cu cm/molecule-sec at 25 °C(SRC) that was derived using a structure estimation method(3). Triethyl citrate 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).
有害作用Neurotoxin - Other CNS neurotoxin
暴露経路The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.
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.orgIDENTIFICATION AND USE: Triethyl citrate is a colorless, oily liquid with bitter taste. It is used as solvent and plasticizer for nitrocellulose and natural resins, softener, paint removers, agglutinant, perfume base, food additive (not over 0.25%) as an emulsifier and as a flavor-preserving agent. HUMAN EXPOSURE AND TOXICITY: Triethyl citrate 20% in petrolatum was not a primary irritant or sensitizer in human studies. ANIMAL STUDIES: Triethyl citrate, applied undiluted during epidermal induction, was a strong sensitizer in a guinea pig maximization test. Triethyl citrate 33.3% produced irritation in rabbit eyes. Intravenous administration of a 100 mg/kg bw dose of triethyl citrate to rabbits produced a marked increase in motor activity and respiration. A group of 20 mice given intraperitoneal doses of 350 mg/kg bw of triethyl citrate daily for 14 days had a slightly lower mean growth rate than control animals. No differences were seen in the two groups in erythrocyte and leucocyte blood cell count, clotting time and hemoglobin levels. Examination of the liver, lung and kidney tissues of two animals at necropsy revealed no pathological cellular changes. At doses ranging from 0.5 to 10 mg/kg b.w. triethyl citrate was nonteratogenic in the chicken embryo. Ames test using triethyl citrate (0.4%-1.6%) on Salmonella typhimurium TA1535, TA1537, TA1538 was negative with and without metabolic activation.
Signs and SymptomsCough.Redness.Vomiting.
Ongoing Test StatusEPA has released the first beta version (version 0.5) of the Interactive Chemical Safety for Sustainability (iCSS) Dashboard. The beta version of the iCSS Dashboard provides an interactive tool to explore rapid, automated (or in vitro high-throughput) chemical screening data generated by the Toxicity Forecaster (ToxCast) project and the federal Toxicity Testing in the 21st century (Tox21) collaboration. /The title compound was tested by ToxCast and/or Tox21 assaysClick on the "Chemical Explorer" button on the tool bar to see the data./[USEPAICSS Dashboard ApplicationAvailable from, as of April 22, 2015: http://actor.epa.gov/dashboard/]
Effluent ConcentrationsTriethyl citrate was identified in the column inflow at the beginning of an experiment on May 29, 2001 below the reporting limit of 0.500 ug/L but reported as 0.200 ug/L and at the end of the experiment Jun 20, 2001 concentrations were reported as below the reporting limit of 0.500 ug/L. The concentration in the column drainage at the end of the experiment Jun 20, 2001 was also below the reporting limit of 0.500 ug/L(1). Treated effluent was applied to the top of a 2.4 meter soil column over 23 days. The soil was packed with a Mohall-Laveen sandy loam from an area northwest of Phoenix, AZ with no known history of cultivation or irrigation. Secondarily treated effluent from a 17.5 million gallon/day municipal waste water treatment plant serving 120,000-150,000 residents near Phoenix, AZ was employed(1). Triethyl citrate was identified in effluent samples that receive domestic waste waters of 50,000 inhabitants of Southern Finland(2). Triethyl citrate was detected (reporting limit 0.5 ug/L) at a median concentration of 0.270 ug/L and a maximum of 0.52 ug/L with a detection frequence of 100% in water samples from 10 waste water treatment plants located around the country (Arizona, Colorado, Georgia, Iowa, Kansas, Minnesota, Nevada, New Jersey, New York, South Dakota)(3). Triethyl citrate was detected (reporting limit 0.5 ug/L) at a median concentration of 0.105 ug/L and a maximum of 0.400 ug/L with a detection frequence of 100% in water samples downstream (96 to 14,484 meters)and at a median concentration of 0.082 ug/L and a maximum of 0.26 ug/L with a detection frequency of 70% in water samples downstream (805 to 96,561 meters) from 10 waste water treatment plants located around the country (Arizona, Colorado, Georgia, Iowa, Kansas, Minnesota, Nevada, New Jersey, New York, South Dakota)(3).
Soil Adsorption/MobilityUsing a structure estimation method based on molecular connectivity indices(1), the Koc of triethyl citrate can be estimated to be 20(SRC). According to a classification scheme(2), this estimated Koc value suggests that triethyl citrate is expected to have very high mobility in soil.
Human Toxicity Excerpts/HUMAN EXPOSURE STUDIES/ Triethyl citrate 20% in pet (petrolatum) was not a primary irritant or sensitizer in human studies./OTHER TOXICITY INFORMATION/ Due to its sensitizing potential ... triethyl citrate /is not considered/ to be a suitable substitute for phthalates as plasticizers in children's toys.
Artificial Pollution SourcesTriethyl citrate's production and use in cosmetics and personal care products(1,4), as a specialty solvent, plasticizer(2) and food additive(2,3) may result in its release to the environment through various waste streams(SRC).
Environmental BiodegradationAEROBIC: Biodegradation data in soil and water were not available for triethyl citrate(SRC, 2015). Based on data for acetyl tributyl citrate (CAS 77-90-7), a structural analog, triethyl citrate is expected to biodegrade rapidly(SRC). Utilizing the Japanese MITI test acetyl tributyl citrate, present at 100 mg/L, reached 82% of its theoretical BOD in 4 weeks using an activated sludge inoculum at 30 mg/L(1).
Carcinogen ClassificationNo indication of carcinogenicity to humans (not listed by IARC).
水環境危害等級（WGK）1
TSCA 収載状態TSCA listed
RTECS 番号GE8050000
毒性LD50 orally in Rabbit: > 3200 mg/kg LD50 dermal Rabbit > 5000 mg/kg
税関コード2918 15 00
危険文句（R）20
化審法(2)-1320
消防法危-4-3-III
危険表示Xn
安全措置（S）24/25-45
貯蔵分類10 - Combustible liquids
有害物質データ77-93-0(Hazardous Substances Data)