Quinoline Yellow
Quinoline Yellow, commonly associated with E104 in markets where it is permitted, is a synthetic greenish-yellow food colour used for industrial shade standardisation, visual identity and controlled colour development. It is selected where manufacturers require a strong yellow tone, good batch-to-batch consistency and cost-effective colour performance in specific regulated applications. Because Quinoline Yellow is not universally permitted for food use, every sourcing project must begin with destination-market verification, approved food-category review, maximum-level confirmation and label-declaration assessment.
Product identity
| Product | Quinoline Yellow |
|---|---|
| Common technical name | Quinoline Yellow WS, subject to supplier grade |
| Category | Colours & Colouring Foods |
| Colour type | Synthetic yellow to greenish-yellow colour |
| Function | Food colour, shade correction ingredient and colour standardisation aid where legally permitted |
| E / INS number | E104; verify INS or national numbering and permitted use by destination market |
| CAS / identity | 8004-92-0 |
| Colour Index references | CI 47005, Acid Yellow 3, Food Yellow 13, subject to grade documentation |
| Typical form | Water-soluble powder, granular dye, liquid solution, aluminium lake or colour dispersion |
| Typical shade | Bright yellow to greenish yellow; final shade depends on dosage, pH, matrix, solids and colour blend |
| Key buying criteria | Colour strength, dye content, purity, solubility, regulatory fit, documentation package and lot consistency |
Application fit
Quinoline Yellow should only be considered where it is legally permitted for the target food category and country. Potential industrial use areas may include:
- Confectionery, hard candy, gummies and decorative sweets
- Non-alcoholic beverage systems where permitted
- Desserts, jellies, puddings and sweet preparations
- Sauces, seasonings, savoury coatings and condiment systems
- Bakery decorations, icings, toppings and fillings
- Snack coatings and dry seasoning blends
- Colour blends for lemon, lime, tropical, herbal or greenish-yellow shades
- Aluminium lake applications for fat-based, low-moisture or coating systems where approved
Industrial colour function
Quinoline Yellow is used when a stable and reproducible yellow or greenish-yellow shade is required in an industrial formulation. Unlike natural colour systems that can vary with botanical source, seasonal raw material and extraction conditions, certified synthetic colour grades are typically selected for strong tinctorial power, consistent shade and predictable dosing. This can make Quinoline Yellow useful in standardised products where visual uniformity is important across multiple production sites, long shelf-life runs or export batches.
The colour may be used alone to create a yellow tone or blended with blue, green, red or orange colours to create lemon-lime, apple, pineapple, tropical, herbal, olive, chartreuse or speciality shades. In industrial colour matching, the correct grade and dose must be validated in the finished matrix because pH, dissolved solids, opacity, fat content, emulsifiers, proteins, minerals, processing temperature and packaging can change the visual result.
Technical performance factors
- Colour strength: dye concentration and absorptivity determine cost-in-use and dosage accuracy.
- Solubility: water-soluble grades are suitable for aqueous systems, while lake grades are preferred for selected dry, fat-based or coating applications.
- Shade consistency: batch-to-batch hue and strength should be checked with instrumental and visual colour standards.
- pH environment: finished-product pH can influence shade perception, especially in blended colour systems.
- Heat process: colour retention should be tested under the actual pasteurisation, hot-fill, cooking, baking or drying profile.
- Light exposure: transparent packaging and retail lighting may affect visual shelf-life and should be evaluated.
- Matrix opacity: clear beverages, opaque sauces, dairy systems and coatings require different dosage strategies.
- Regulatory limit: maximum permitted levels can be more important than technical performance in many markets.
Formulation questions
- Is Quinoline Yellow permitted in the destination country and target food category?
- Is the required grade water-soluble dye, aluminium lake, liquid colour or customised dispersion?
- What is the target shade: bright yellow, greenish yellow, lemon, lime, tropical or blended green?
- What is the finished product pH, heat process, storage condition and shelf-life target?
- Will the product be packed in transparent, translucent, opaque or light-protective packaging?
- Does the label require a warning statement, E-number declaration or local colour-additive name?
- Is the project replacing another synthetic colour or evaluating natural-colour alternatives?
Water-soluble dye versus lake grade
Quinoline Yellow may be supplied as a water-soluble dye or as an aluminium lake, depending on the supplier and regulatory market. Water-soluble grades are generally used in beverages, syrups, jellies, aqueous desserts, sauces and other water-based systems. Lake grades are pigments produced for dispersion rather than dissolution and may be suitable for low-moisture, fat-containing, coating, tablet, seasoning or decorative systems where permitted.
| Grade type | Typical technical role | Purchasing considerations |
|---|---|---|
| Water-soluble powder | Strong yellow colour for aqueous systems, beverage concentrates, syrups and liquid preparations. | Check dye content, solubility, insoluble matter, shade, particle size, dusting, moisture and regulatory compliance. |
| Granular dye | Improved handling and reduced dust compared with fine powders in some production environments. | Review dissolution speed, blend uniformity, flowability, segregation risk and dosing equipment compatibility. |
| Liquid solution | Convenient metering for beverage, sauce, dessert and automated liquid dosing systems. | Confirm concentration, preservative system, microbiological quality, storage temperature, viscosity and shelf life after opening. |
| Aluminium lake | Dispersion colour for selected dry mixes, coatings, fat-based systems and decorative applications. | Check dye percentage, aluminium content, particle size, oil dispersibility, opacity, sedimentation and permitted food categories. |
| Custom colour blend | Pre-adjusted shade for lemon, lime, tropical, herbal or brand-specific colour targets. | Request formula confidentiality terms, component list, regulatory status of every colour and finished-product dosage guidance. |
Application-specific technical notes
| Application | Technical opportunity | Key control points |
|---|---|---|
| Beverages and syrups | Provides strong yellow or greenish-yellow colour in clear or lightly cloudy acidic systems where permitted. | Solubility, clarity, pH, preservative system, light exposure, bottle colour, heat process and legal maximum use level. |
| Confectionery | Useful for lemon, lime, tropical, apple and decorative shades in hard candy, gummies and jellies. | Cooking temperature, acidity, gel system, water activity, colour migration, packaging and label declaration. |
| Desserts and jellies | Supports bright yellow shades in instant desserts, gel desserts, puddings and sweet preparations. | Hydration order, pH, dairy or protein interaction, storage temperature and colour uniformity. |
| Sauces and seasonings | Can standardise yellow-green tones in acidic sauces, savoury blends, coatings and condiments. | Salt, vinegar, spices, oil phase, emulsifiers, metal ions, heat treatment and shade stability. |
| Bakery decorations | Can be used for icings, fillings, toppings and decorative systems where colour use is permitted. | Baking temperature, water activity, fat content, pH, migration into base product and local category restrictions. |
| Snack coatings | Lake or dispersion grades may help develop yellow or greenish seasoning appearance. | Oil compatibility, dry-blend uniformity, particle size, dusting, coating adhesion and visual shade after frying or baking. |
Colour matching and process validation
Industrial colour matching should be performed in the finished food system rather than in water alone. A colour that appears correct in a laboratory solution may look different in an opaque dessert, a high-solids syrup, a spicy sauce, a dry seasoning or a fat-based coating. Manufacturers should normally prepare dosage curves, compare visual and instrumental colour values, evaluate colour after thermal processing and review stability throughout the intended shelf life.
- Create a master shade standard using the approved finished product, not only a colour solution.
- Compare the trial lot against the target shade under production, warehouse and retail lighting.
- Validate colour after pasteurisation, hot-fill, cooking, drying, baking or frying where applicable.
- Check whether the colour migrates between layers, fillings, coatings or inclusions.
- Confirm whether colour dosage remains within the legal maximum for the destination market.
- Use supplier COA values to adjust incoming-lot dosage where colour strength varies within specification.
Comparison with alternative yellow colours
Quinoline Yellow is often compared with Tartrazine, Sunset Yellow, riboflavin, beta-carotene, curcumin, annatto, safflower yellow and other yellow or orange colour systems. Synthetic colours may offer high strength, low dosage and strong shade consistency, while natural colours may support clean-label or plant-based positioning but can be more sensitive to light, pH, heat, oxidation or matrix effects. The best option depends on the target market, label strategy, performance requirement, cost target and legal approval status.
Advantages to evaluate
- Strong yellow to greenish-yellow shade at low dosage
- Useful for repeatable industrial colour standardisation
- Available as water-soluble dye or lake grade in some supply chains
- Can be blended with other colours for custom lemon, lime or greenish tones
- Cost-effective colour strength compared with many natural alternatives
- Suitable for selected regulated applications where approved by local law
Limitations to manage
- Not a natural colour or colouring food
- Not permitted for food use in every country
- May require specific warning statements in some markets and product categories
- Maximum permitted levels and food categories can be restrictive
- Customer policies may exclude synthetic colours even where legally permitted
- Finished-product testing is needed for shade, stability, migration and processing loss
Quality and specification parameters
For industrial purchasing, Quinoline Yellow should be evaluated by specification and compliance file rather than by product name only. Supplier grades can differ in dye content, physical form, shade, insoluble matter, moisture, particle size, lake concentration and purity profile. A complete technical review reduces the risk of colour mismatch, rejected imports, labelling errors and production inconsistency.
| Parameter | Why it matters |
|---|---|
| Colour strength / dye content | Determines dosage, cost-in-use and shade consistency between batches. |
| Shade and absorbance data | Supports instrumental colour matching and supplier-to-supplier comparison. |
| Solubility or dispersibility | Essential for selecting water-soluble dye, liquid solution, lake or dispersion grade. |
| Insoluble matter | Important for beverages, clear systems, filters, nozzles and liquid dosing equipment. |
| Moisture content | Affects flowability, caking risk, shelf life and powder handling. |
| Subsidiary dyes and impurities | Supports regulatory compliance and comparison against food-colour purity criteria. |
| Heavy metals | Required for food safety review, import clearance and customer specifications. |
| Particle size | Critical for lake grades, dry blends, dispersions, coatings and uniform appearance. |
| Microbiological expectations | Relevant for liquid grades, sensitive food applications and customer QA programs. |
| Regulatory declaration | Confirms permitted markets, legal name, maximum levels, warning statements and food-category limitations. |
Processing and handling guidance
Quinoline Yellow should be handled using controlled weighing, dilution and dosing procedures. Because synthetic colours are often strong at low usage levels, small weighing or dilution errors can create visible shade deviations. Plants should define whether the colour is added as a powder, premix, liquid solution or dispersion, and the addition point should be validated for uniform colour distribution.
- Use precision weighing equipment and documented colour-dosing procedures.
- Prepare pre-dilutions or pre-blends where needed to improve distribution.
- Confirm dissolution speed and clarity before dosing into clear beverages or syrups.
- Use dust-control practices and appropriate personal protective equipment during powder handling.
- Avoid cross-contamination between colour batches, colour shades and allergen-containing premixes.
- Record lot number, dosage rate, addition step and operator checks for traceability.
- Clean colour-contact equipment carefully to avoid staining or carryover into the next production run.
Regulatory and labelling considerations
Quinoline Yellow is a market-sensitive colour. Permission, maximum use level, food categories, label declaration and consumer warning requirements vary significantly between countries. In some markets it may be permitted for selected food categories as E104, while other markets may not allow it for food use or may restrict it through customer standards. The buyer should confirm the current regulation for the destination country before purchasing, importing or formulating.
For products sold in markets that require attention or activity warning statements for certain synthetic colours, the label review must be completed before commercial production. The regulatory file should also confirm whether the product is declared by E-number, colour name, local additive name or another legally required declaration. Where the customer requires clean-label, natural-colour, school-food, child-focused or export-sensitive positioning, alternative yellow colour systems may need to be evaluated.
Storage, packaging and logistics
Quinoline Yellow is typically supplied in sealed food-grade bags, cartons, drums, fibre drums, bottles, jerrycans or customised industrial packaging depending on form and supplier. Powder grades should be kept dry and protected from humidity, dust release and contamination. Liquid grades should be protected from microbial contamination, evaporation, freezing or excessive heat according to supplier instructions. Colour products should be stored away from strong odours, incompatible chemicals and direct sunlight.
- Store in tightly closed original packaging in a clean, dry and controlled warehouse.
- Protect powders from moisture uptake, caking and airborne contamination.
- Protect liquid solutions from contamination and follow any declared storage temperature.
- Use first-expiry-first-out stock rotation and maintain full lot traceability.
- Confirm net weight, gross weight, pallet configuration, batch coding and shelf life before shipment.
- Request export documents early when destination-country rules require specific colour declarations.
Documents to request
- Product specification or technical data sheet with colour strength and grade identity
- Certificate of analysis for available batch or lot
- Safety data sheet
- Food-grade statement and intended-use declaration
- Regulatory status declaration for the destination country and target food category
- Statement of E-number, local additive name or required label declaration
- Warning-statement guidance where applicable to the destination market
- Heavy metals and impurity specification
- Subsidiary dyes, insoluble matter and purity profile where applicable
- Allergen statement and cross-contamination information
- GMO status declaration where required by the customer
- Halal, kosher, vegan or vegetarian suitability declaration where required
- Microbiological specification, especially for liquid grades
- Shelf-life, storage and transport condition statement
- Label draft, packaging details, pallet configuration and batch coding format
- Market-specific import declarations required by the destination country
How to request this product
Send the product name, target colour strength, required form, application, finished product category, destination country, intended dosage, quantity, packaging preference, expected shipment date and required documents. If you already purchase Quinoline Yellow or another yellow colour, attach the existing specification, certificate of analysis, label declaration, target shade standard or finished-product photo so supplier options can be compared more accurately.
Useful answers
What is Quinoline Yellow used for in food manufacturing?
Quinoline Yellow is used as a synthetic yellow to greenish-yellow colour for visual identity, shade development and colour standardisation in selected regulated applications such as confectionery, beverages, desserts, sauces, coatings, decorations and snack systems where permitted.
Is Quinoline Yellow a natural colour?
No. Quinoline Yellow is generally handled as a synthetic food colour, not a natural colour or colouring food. If the project requires clean-label or natural-colour positioning, alternative colour systems should be evaluated.
Which grade should I request?
The correct grade depends on the application. Water-soluble dyes are usually reviewed for aqueous systems such as beverages and syrups, while lake or dispersion grades may be reviewed for dry blends, coatings, fat-based systems or decorative applications where legally permitted.
Which technical parameters should be compared?
Buyers should compare colour strength, dye content, shade, solubility, insoluble matter, moisture, subsidiary dyes, heavy metals, particle size for lakes, microbiological expectations, shelf life, storage conditions and regulatory declarations.
Does Quinoline Yellow require special labelling?
It may require specific additive naming, E-number declaration or warning statements depending on the destination market and food category. The buyer should confirm local label rules before commercial use.
Can Global Food Additives source Quinoline Yellow?
Global Food Additives can review sourcing options for Quinoline Yellow according to target colour strength, grade, application, destination country, quantity, packaging and documentation requirements.
Which documents should be requested?
Buyers commonly request a technical data sheet, certificate of analysis, safety data sheet, food-grade statement, regulatory declaration, heavy metal limits, impurity profile, allergen statement, GMO statement, shelf-life statement, storage instructions and packaging details.
Is this product permitted in every country?
No. Quinoline Yellow use depends on destination-market rules, approved food categories, maximum levels, warning statements, label requirements and buyer responsibility. Regulatory status should be checked before import, formulation and commercial sale.
Tell us which Quinoline Yellow grade or yellow colour solution you need.
Send the target colour strength, grade type, application, destination country, intended dosage, quantity, packaging preference, delivery term and document requirements. Our team will review your inquiry and respond from orders@foodgradeadditives.com.
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