How to Read a Flavour Technical Data Sheet: Dosage, Carrier, Solubility and Heat Stability

A flavour technical data sheet (TDS) tells you whether a flavour will work in your product before you buy a drum of it. Read four fields first: recommended dosage (usually 0.05–0.5% w/w), the carrier or solvent (propylene glycol, triacetin, ethanol, or a maltodextrin/gum-arabic powder), solubility (water-, oil-, or dispersible), and heat/process stability. Those four decide compatibility. The rest of the sheet — appearance, specific gravity, refractive index, flash point, allergen and regulatory status — confirms identity and tells you how to handle, store and clear the goods.

What a TDS is — and what it is not

A technical data sheet is the specification document for a flavour: the theoretical parameters a given product is built to meet, batch after batch. It describes the product type, not a specific lot. That distinction matters when you source, because three documents travel with a commercial flavour and each answers a different question:

• TDS (technical data sheet): what the product is and how to use it — composition type, carrier, dosage, solubility, physical constants, storage. The reference you specify against.
• COA (certificate of analysis): what this batch actually tested at — measured values for the lot you received, against the TDS spec window. The COA “bridges the gap between the theoretical specifications listed on a technical data sheet and the actual physical product sitting on your receiving dock.” (Alliance Chemical)
• SDS (safety data sheet): hazard, handling, transport and first-aid data — driven by the carrier (flash point, for example), not by the flavour character.

A TDS gives general technical information about the product; a COA verifies the quality of a specific batch through testing (CIKLab). You specify against the TDS, then check each delivery’s COA against it. If the two ever disagree on a parameter that isn’t even on the TDS, that’s your first question for the supplier.

For how to run an incoming check against the COA once goods land, see How to evaluate a flavour COA and run an incoming-quality check.

Field 1 — Dosage rate: the number that sets your cost-in-use

Dosage (also “recommended usage rate” or “addition rate”) is the percentage of flavour to add to the finished product. It is the single most commercially loaded figure on the sheet, because it sets cost-in-use: a flavour that costs twice as much per kilo but doses at half the rate lands at the same cost in your batch.

Read dosage carefully:

• Check the basis. Is the rate quoted on the total finished product, or on a sub-base (e.g. on syrup before dilution)? A rate quoted “on syrup” at 0.2% is a very different addition once the syrup is one part in five.
• Check w/w vs w/v. Weight-for-weight (% w/w) and weight-for-volume (% w/v) diverge as soon as your product’s density moves away from 1.0 — relevant for syrups, oils and dense bases.
• Treat the figure as a starting point. A TDS rate is a recommended range, not a locked value. Final dosage is set in application trials against your own base, sweetener and process.

Why the carrier caps your dosage

Dosage is not only a flavour-strength decision; the carrier can impose a legal ceiling. Under EU/UK rules, common solvent carriers are limited in the food as consumed — propylene glycol and triacetin each up to 3,000 mg/kg in foodstuffs and 1,000 mg/L in beverages (Kanegrade). If a flavour were carried 100% on propylene glycol, that ceiling alone caps the dose at roughly 0.3% in a foodstuff and 0.1% in a beverage before you hit the carrier limit, regardless of taste (Kanegrade). Always cross-read the dosage against the carrier identity and the carrier’s own limit.

Field 2 — Carrier and solvent: what the flavour is dissolved or diluted in

Pure aroma chemicals are too potent and often too volatile to dose directly, so a flavour is delivered in a carrier. The carrier determines solubility, dosage ceiling, flash point, label declaration and heat behaviour. The carriers you will see most often:

The common carriers for flavour creation are propylene glycol, ethanol, triacetin, vegetable oils, maltodextrin and water (Flavour Manager). The carrier choice is rarely cosmetic — it cascades into solubility, dosage limit, flash point and process survival, which is why it sits second only to dosage when you read the sheet.

Field 3 — Solubility: will it go where your product needs it

Solubility on a TDS tells you which phase the flavour will disperse into. Get this wrong and the flavour sits as droplets, separates, or never releases.

• Water-soluble / water-miscible: for beverages, syrups, aqueous bases. Usually a PG, ethanol or water carrier.
• Oil-soluble / oil-dispersible: for chocolate, compound coatings, fat fillings, fried snacks. Oil or MCT carrier.
• Dispersible (powder): spray-dried flavours that rehydrate or distribute through a dry mix or dough.
• Emulsion / cloudy: designed to suspend in beverages and contribute cloud/turbidity.

Match solubility to the continuous phase of your product, not to the headline ingredient. A “milk drink” is water-continuous; a chocolate is fat-continuous. For a deeper split between liquid, powder and encapsulated formats, see Liquid vs powder vs encapsulated flavours.

Solubility traps that bite at scale

Two solubility problems only show up in production, not in a bench beaker, so read the TDS with them in mind:

• Ringing and oiling-out in clear beverages. A flavour that is technically “water-soluble” at low dose can throw a haze or an oily ring at the neck of a bottle if dosed above its solubility limit, or if the finished drink has low alcohol/solubiliser content. If the sheet quotes a maximum clear-solution concentration, respect it; if it doesn’t, ask. Cloud and ringing are the most common cosmetic rejections in carbonated and still soft drinks.
• Dispersion vs dissolution in powders. A spray-dried flavour “disperses” — it doesn’t truly dissolve until the wall material rehydrates. In a cold-mix drink or a low-moisture dough, incomplete rehydration leaves flavour locked in the capsule and the product tasting flat. The TDS should state the conditions (temperature, shear, moisture) the powder needs to release.

Where solubility is marginal, the manufacturer can reformulate with a different carrier or add a permitted solubiliser — but you can only ask for that if you have read the field and tested at your real dose.

Field 4 — Heat and process stability: surviving your line

This is the field bakery, retort and hot-fill buyers must not skim. Many natural flavour compounds are volatile and begin to break down or evaporate under high heat; flavours that taste strong in batter can fade or shift after baking (Beck Flavors). Baking routinely exceeds 175°C (350°F) at the surface, and browning reactions starting near 140°C generate their own aromas that compete with what you added.

What to look for on the sheet:

• A stated process window. “Stable to baking / pasteurisation / UHT / hot-fill” with a temperature and time, not just “heat stable.”
• Carrier with a higher boiling point. Triacetin and encapsulated powders retain volatiles better than ethanol under sustained heat. Research on shortcake biscuits found the choice of flavour solvent — propylene glycol versus triacetin — measurably changed retained vanillin and the sensory result over shelf life (ScienceDirect).
• Encapsulation. Spray-dried encapsulation in a gum-arabic/maltodextrin matrix protects volatiles and delays release; a roughly 1:1 gum arabic to maltodextrin carrier gives high encapsulation efficiency and good thermal properties (review).

If your process sees an oven, specify against this field hard, and read our companion guide Heat-stable baking flavours: surviving oven temperatures without off-notes.

The physical-constant block: identity and handling

Below the application fields, a TDS lists physical constants. These rarely change your formulation decision, but they confirm you have the right material and tell logistics how to handle it. A TDS typically includes identity, purity, physical attributes such as moisture, solubility/functional specs, storage conditions and test methods (CBI).

Density, refractive index, specific/optical rotation and flash point are standard quality-control measurements for flavour ingredients (Anton Paar). Flash point in particular is load-bearing for shipping: it sets whether the flavour moves as a flammable liquid, which changes freight, documentation and warehousing.

Using specific gravity to dose accurately

Specific gravity (SG) is the field that quietly protects your batch consistency. If your dosing line meters by volume but your recipe is written by weight — or the reverse — SG is the conversion factor. A flavour with SG 1.05 means one litre weighs 1.05 kg; meter 100 mL when the recipe wants 100 g and you are 5% under-dosed every batch. The TDS states SG at a reference temperature (commonly 20°C or 25°C); since liquids expand with heat, dosing a warm flavour by volume drifts further still. For high-value or high-impact flavours, dose by weight and use the TDS SG only as a cross-check on identity.

Refractive index and the quick goods-in check

Refractive index (RI) is a fast, non-destructive purity fingerprint: a handheld or benchtop refractometer reading that falls outside the TDS window at goods-in flags dilution, the wrong carrier, or a substituted batch before it ever enters production. It will not tell you what changed, but it tells you that something did — which is exactly what an incoming check is for. Pair the RI reading with SG and a sensory check and you have a three-point gate that catches most substitution and dilution problems without a lab.

Regulatory and labelling fields: read before you commit

A complete TDS states the regulatory identity you will need to label the finished product and clear it through customs. In the EU/UK, flavourings are governed by Regulation (EC) No 1334/2008, which defines the categories and sets the rules for when the word “natural” may be used (EUR-Lex; European Commission). The term “natural” may be used only where the flavouring component is made up solely of flavouring preparations and/or natural flavouring substances (EUR-Lex).

Check these fields against your label and import plan:

• Flavour category (natural flavouring, natural flavouring substance, flavouring substance, flavouring preparation) — this drives your ingredient-list wording.
• Allergen statement — declarable allergens present or carried over (e.g. nut, dairy, gluten, soy lecithin emulsifier).
• Halal / kosher status — and the certifying body, where claimed. Residual ethanol carriers raise halal questions.
• GMO / “non-GMO” status, and any “no added colour/preservative” notes.
• Shelf life and storage — typically a stated period from manufacture at a defined temperature, often cool and dark for oxidation-prone profiles.

For what you can legally print on an Egyptian label, see the natural-claim and NFSA-labelling guidance in the cluster. Phrase capability as compliant with / meets the requirements of; certificates and specs are available on request rather than assumed.

A worked reading: putting the four fields together

Say you make a carbonated citrus drink and a supplier sends two TDSs.

• Flavour A: PG carrier, water-soluble, dosage 0.12% on finished beverage, “stable to hot-fill,” flash point 99°C. Fits — water phase, dose under the PG beverage ceiling (~0.1% would be the 100%-PG cap, so a partial-PG blend at 0.12% needs you to confirm actual PG content against the 1,000 mg/L limit).
• Flavour B: ethanol carrier, water-soluble, dosage 0.30%, flash point 23°C, no process statement. Two flags: at 0.30% the carrier limit and the low flash point (flammable freight) both bite, and the missing heat statement is a question, not a green light.

Same flavour character, very different sourcing consequence — visible only because you read dosage, carrier, solubility and stability together.

Red flags: when a TDS is telling you to slow down

A thin or evasive data sheet is a sourcing signal in itself. Treat these as questions to resolve before you sample, not reasons to reject outright — but never as details to ignore:

• “Heat stable” / “high stability” with no number. Adjectives are not specifications. A process claim needs a temperature and a time.
• No carrier named. Without the carrier you cannot judge solubility, dosage ceiling, flash point or heat behaviour — four of the most important decisions on the sheet.
• Dosage with no stated basis. “Use at 0.2%” on what — finished product, syrup, dry mix? An unstated basis can be a five-fold error.
• Missing allergen statement. A blank allergen field is not the same as “no allergens.” Get an explicit declaration, including carry-over from the carrier (soy lecithin, for example).
• Physical constants with no reference temperature or method. SG and RI mean little without the temperature and test method they were measured at.
• A TDS that doubles as the COA. They are different documents for different jobs. If a supplier cannot produce a batch-specific COA on request, you have no way to verify what you actually received.
• Shelf life with no storage condition. “12 months” is meaningless without “at 5–25°C, sealed, away from light.” Oxidation-prone citrus and dairy notes are especially sensitive.

None of these is necessarily disqualifying. Each is a gap a competent manufacturer can close in minutes. How fast and how completely they close it tells you as much about the supplier as the sheet tells you about the flavour.

A pre-sample checklist

Before you request a sample, run the TDS through this gate. If any line is blank, ask the supplier first:

1. Flavour category and exact label wording it permits.
2. Carrier/solvent named, with its food/beverage dosage limit.
3. Recommended dosage and the basis it is quoted on.
4. Solubility matched to your product’s continuous phase.
5. A real heat/process statement if your line applies heat.
6. Flash point (for freight class) and full physical constants with reference temperatures.
7. Allergen, halal/kosher and GMO status with certifying bodies where claimed.
8. Shelf life with storage conditions.
9. Confirmation that a batch-specific COA and SDS will accompany the goods.

A flavour that clears this checklist on paper is worth a sample. One that doesn’t is worth a conversation first.

How Innovote sources this

We start from your spec, not a catalogue. Tell us the application (beverage, bakery, dairy, confectionery), the process the flavour must survive (oven temperature and time, pasteurisation, hot-fill), the phase it has to disperse into, your target dosage or cost-in-use, and any halal/kosher/allergen and label constraints. We then:

• Request the TDS, COA and SDS from candidate manufacturers and read them against your brief — flagging carrier-limit, flash-point and heat-stability mismatches before a sample ships.
• Confirm the flavour category and label wording you can use, and whether “natural” is supportable under the relevant regulation.
• Arrange samples for application trials so dosage is set in your base, not on paper.
• On order, check each delivery’s COA against the agreed TDS window and align documentation for NFSA registration and customs clearance.

Capability is phrased as compliant with / meets the requirements of; certificates and specifications are available on request. We make no health claims.

FAQ

What is the difference between a flavour TDS and a COA?
A TDS is the product specification — what the flavour is and how to use it, valid for every batch. A COA reports the measured results for one specific lot against that spec. You buy and label against the TDS; you accept each delivery against its COA (CIKLab).

Why is the carrier so important on a flavour data sheet?
The carrier sets solubility (water vs oil), the legal dosage ceiling (e.g. propylene glycol and triacetin at 3,000 mg/kg in food, 1,000 mg/L in beverages), the flash point and freight class, and heat behaviour. Two flavours with the same character but different carriers can behave completely differently in your line (Kanegrade).

How do I know if a flavour will survive baking from the TDS?
Look for an explicit process statement (“stable to baking at X°C for Y minutes”), a higher-boiling carrier such as triacetin or an encapsulated spray-dried powder, and confirm it in an application trial. “Heat stable” with no temperature is a marketing phrase, not a spec (Beck Flavors).

What does flash point tell a buyer?
Flash point is the lowest temperature at which the flavour gives off flammable vapour. It is driven by the carrier — ethanol carriers are low and ship as flammable liquids; propylene glycol and triacetin are higher. It sets your transport class, documentation and storage rules (Anton Paar).

Is the dosage on the TDS the dose I should use?
Treat it as a starting range. Final dosage is set in application trials against your own base, sweetener system, pH and process, and capped by any carrier legal limit. Confirm whether the rate is quoted on the finished product or on a sub-base.

Which fields should I check first for an Egyptian import?
Flavour category and label wording, allergen and halal status, the carrier identity and its dosage limit, shelf life, and the documentation pack (TDS, COA, SDS) needed for NFSA registration and customs. Specs and certificates available on request.

This article is part of the Innovote flavourings hub: Food Flavourings for Beverage, Bakery, Dairy & Confectionery: A Sourcing Buyer’s Guide. See also Heat-stable baking flavours and How to evaluate a flavour COA.

Tell us the spec — application, process temperature, phase, target dosage and label constraints — and we’ll come back with grade, carrier options, MOQ, lead time and a landed-cost path.

Byline: Innovote Trade Desk.