Food Additives E Codes

Food Additive E1505 Triethyl Citrate

A scientific review of E1505 triethyl citrate, covering citrate ester identity, solvent and carrier role, flavour systems, plasticizing function, migration, dose control and specification.

Food Additive E1505 Triethyl Citrate
Technical review by FSTDESKLast reviewed: May 14, 2026. Rewritten as a specific technical review using the sources listed below.

Additive E1505 Triethyl Citrate technical scope

The title says "Food Additive E1505 Triethyl Citrate", but in the EU E-number system E1505 is triethyl citrate, while triacetin is E1518. These two additives are both ester solvents or carriers in some contexts, but they are not the same chemical. Triethyl citrate is the triethyl ester of citric acid. Triacetin is glyceryl triacetate, the triacetate ester of glycerol. A correct article must therefore discuss E1505 as triethyl citrate and avoid mixing it with E1518 triacetin. Supplier documentation and labels should be checked for this exact identity.

Triethyl citrate is used mainly as a carrier, solvent, plasticizer or sequestrant-type formulation aid depending on region and application. It can help dissolve or disperse flavours, colours, antioxidants or other additives and can modify the flexibility of edible films or coatings. Its role is normally functional support rather than direct taste, preservation or colour. Because it may appear in flavour or additive preparations, the finished-food developer should know whether it is present and whether it contributes to the additive declaration.

Additive E1505 Triethyl Citrate mechanism and product variables

In flavour systems, a carrier solvent must dissolve aroma compounds, remain compatible with the food matrix and avoid unacceptable sensory impact. Triethyl citrate can be useful where a relatively polar ester carrier is needed. It may help carry oil-soluble or semi-polar ingredients into a preparation, but compatibility depends on flavour chemistry, water content, pH, packaging and processing. It should not be chosen only because it is permitted; it should be chosen because it keeps the active ingredient stable and evenly distributed.

As a plasticizer, triethyl citrate can reduce brittleness in films, coatings or capsules by increasing chain mobility in a polymer matrix. This can matter in encapsulated flavours, edible coatings or tablet-like systems. Too little plasticizer leaves cracking or dusting; too much can cause tackiness, migration, flavour change or weak barrier properties. The correct dose is normally found by mechanical and storage testing.

Additive E1505 Triethyl Citrate measurement evidence

Quality control should start with identity: triethyl citrate, not triacetin. The COA should include purity, acidity, water, residual alcohol or related impurities where specified, colour, odour and compliance with food-grade requirements. Finished-product testing should evaluate distribution, sensory neutrality, package compatibility and migration. Ester solvents can interact with packaging polymers or affect aroma release, so pack testing is important for high-aroma products.

If E1505 is used in a flavour or colour preparation, the product developer should ask whether it changes label declaration, allergen status, halal/kosher status, vegan status or regional compliance. Carrier solvents can be overlooked because they are not the headline ingredient, but they still influence compliance and sensory quality.

Additive E1505 Triethyl Citrate failure interpretation

Failures include haze in beverages, flavour dulling, solvent note, tacky coatings, cracked films, migration into package, poor dispersion and label mismatch. Haze may mean the carrier does not remain compatible after dilution. Solvent note may mean dose is too high or flavour balance is poor. Tacky films may mean over-plasticization or humidity sensitivity. A label mismatch can occur if a supplier changes from triethyl citrate to triacetin or another carrier without notice.

A robust E1505 file should state why triethyl citrate is used, what active ingredient it carries or plasticizes, the maximum level in the finished food, and the evidence that it remains sensory-neutral and compliant. The most important quality control is chemical identity, because confusing E1505 with E1518 creates technical and regulatory errors.

Additive E1505 Triethyl Citrate release and change-control limits

If the local file or supplier database calls E1505 triacetin, correct it before release. Triacetin belongs to E1518. The two esters have different structures, regulatory references and functional behaviour. Leaving the error in an article, specification or label file can create a chain of wrong purchasing, wrong safety reference and wrong declaration.

Additive E1505 Triethyl Citrate practical production review

In a flavour concentrate, triethyl citrate may help dissolve aroma components and keep the concentrate homogeneous until dilution. In an edible film or capsule, it may act as a plasticizer that reduces cracking. In a colour or antioxidant preparation, it may serve as a carrier that improves dosing. These applications require different proof. Flavour systems need sensory neutrality and solubility; films need mechanical flexibility and migration testing; additive preparations need stability and dose accuracy.

Additive E1505 Triethyl Citrate review detail

Analytical release should include identity confirmation, purity, odour, acidity or water where specified, and finished-product compatibility. If the carrier is part of a flavour system, evaluate flavour release and solvent note after dilution. If it is in a coating, test brittleness, tackiness and migration. If the supplier changes carrier, repeat the trial because changing from triethyl citrate to triacetin or another ester can change both performance and declaration.

Additive E1505 Triethyl Citrate review detail

Label and specification should be aligned with the exact role of triethyl citrate. If it is present through a flavour preparation, regulatory teams should know whether it is declared directly, covered by flavour-carrier rules or limited by category. If it is used in a coating, packaging and migration tests become more important. The article should not leave the identity ambiguity unresolved because E1505 and E1518 confusion can mislead both procurement and compliance.

Additive E1505 Triethyl Citrate review detail

A reader using Food Additive E1505 Triethyl Citrate in a plant or development lab needs to know which condition is causal. The working boundary is ingredient identity, process history, analytical method, storage condition and release decision; outside that boundary, a passing result can be misleading because the product may have been sampled before the defect had enough time to appear.

For Food Additive E1505 Triethyl Citrate, PubChem: Triacetin is most useful for the mechanism behind the topic. FDA SCOGS Report: Triacetin helps cross-check the same mechanism in a food matrix or processing context, while Encapsulation of Flavors in Food Applications gives the article a second point of comparison before it turns evidence into a recommendation.

Additive E1505 Triethyl Citrate: additive-function specification

Food Additive E1505 Triethyl Citrate should be handled through additive identity, purity, legal food category, maximum permitted level, carry-over, matrix compatibility, declaration and technological function. Those words are not filler; they define the evidence that proves whether the product, lot or process is still inside its intended control boundary.

For Food Additive E1505 Triethyl Citrate, the decision boundary is dose approval, label check, market restriction, substitute selection or supplier requalification. The reviewer should trace that boundary to assay, purity statement, formulation dose calculation, finished-product check, label review and matrix performance test, then record why those data are sufficient for this exact product and title.

In Food Additive E1505 Triethyl Citrate, the failure statement should name wrong additive class, excessive dose, weak function, regulatory mismatch, undeclared carry-over or poor compatibility with pH and heat history. The follow-up record should preserve sample point, method condition, lot identity, storage age and corrective action so another reviewer can repeat the conclusion.

FAQ

Is E1505 triethyl citrate or triacetin?

E1505 is triethyl citrate. Triacetin is E1518, so supplier identity and label wording must not confuse them.

What is triethyl citrate used for?

It is used mainly as a solvent, carrier or plasticizer in certain food additive, flavour or coating systems.

Sources