Specific questions.
Useful answers.

An organic pigment is dispersed as insoluble particles in a resin, ink or coating. A solvent dye dissolves in a compatible medium or polymer and is often chosen for transparent coloration. The choice depends on transparency, migration, light fastness, resin compatibility and processing temperature; neither category is suitable for every application.

Send the Color Index or current trade name, target shade, resin or binder, processing temperature, pigment loading, end use and destination market. A drawdown, molded chip, masterbatch sample or current TDS makes comparison more reliable. Include any requirements for ΔE, light fastness, FPV or food-contact documentation.

The Color Index identifies the coloring substance, not the complete commercial grade. Particle size, crystal form, surface treatment, dispersibility and concentration can differ. For example, P.B.15:0, P.B.15:1 and P.B.15:3 reflect different phthalocyanine forms or modifications, while grades within one index can still have distinct shade and processing behavior.

Both belong to P.R.170 and share CAS 2786-76-7. F3RK is generally positioned toward a yellower red shade, while F5RK is a deeper, bluer red. The correct comparison is made in the intended resin or binder using the same loading, drawdown method, tinting strength and ΔE target; a shared CAS does not guarantee interchangeable shade.

The published compatibility guide covers GPPS, PS, PMMA, ABS, PET, rigid PVC and synthetic fiber where listed. A filled symbol denotes the principal recommendation; an open symbol indicates a grade worth evaluating. An unlisted resin is not a confirmed recommendation. Verify migration, transparency and residence time in the actual formulation.

Some Color Index products appear in more than one application table, but the required commercial grade may differ. Plastics prioritize thermal stability and migration; coatings often require weather resistance and binder compatibility; printing inks depend on dispersion, rheology and transparency. Match the grade to the actual medium rather than assuming one specification fits all three.

Start with the resin: PS, PMMA, ABS, PET and rigid PVC do not accept every dye equally. Then check the published dye heat resistance, polymer compatibility, target concentration and expected transparency. For example, Solvent Yellow 114 is listed at 280 °C, while several other solvent dyes are listed at 300 °C; these are screening values, not unconditional production limits.

Full shade shows the color developed without white reduction in the specified test medium. Tint or reduction shows how the undertone and strength appear after a controlled let-down with white; for transparent solvent dyes, it can instead mean a lower concentration in a compatible clear resin. The substrate, pigment-to-white or concentration ratio, film or plaque thickness and preparation method must remain constant for a valid comparison.

Record the carrier resin and grade, pigment content, dispersant or additive package, drying condition, extruder configuration, melt-temperature profile, screw speed, throughput and screen pack. Prepare the comparison plaque at a fixed let-down ratio and molding cycle. Shade, dispersion, pressure trend and warpage cannot be compared reliably when these conditions change between samples.

Heat resistance depends on the application and test method. UPBRIGHT lists P.R.254 at 280 °C in its high-performance pigment table and 300 °C in its plastics application table. These values are not automatically contradictory: polymer, loading, residence time and evaluation method can differ. We label each published value with its application instead of blending them into one unsupported number.

The published light-fastness scale runs from 1 to 8, with a higher number indicating better resistance under the referenced test conditions. A 7–8 rating is stronger than a 5 rating, but the result can still change with pigment concentration, film thickness, binder, exposure and test protocol. Ask for the grade TDS and intended exposure conditions before specifying outdoor use.

Where UPBRIGHT publishes a 1–5 rating, the number indicates comparative resistance in the stated product or application table; 5 is the highest point on that scale. Ratings can vary between coatings and inks because the medium and exposure conditions differ. A published 5 / 5 does not replace a formulation-specific chemical resistance test.

Oil absorption, commonly reported here as ml/100g, helps estimate how much vehicle a pigment requires for wetting and dispersion. It influences paste viscosity, pigment loading and formulation cost. For example, P.Y.13 is published at 35–45 ml/100g and P.R.48:2 at 45–55 ml/100g. Compare values only when the measurement basis is compatible.

FPV is the filter pressure value used to assess how a colorant or masterbatch affects pressure buildup during melt filtration. It is especially relevant to high-concentration masterbatch, thin film, synthetic fiber and fine-filter extrusion. Results are meaningful only when screen mesh, polymer, pigment loading, throughput and test method are defined together; there is no universal pass value.

Shade and tinting strength should be measured against an agreed reference using the same substrate, let-down ratio, preparation method and instrument settings. A target such as ΔE ≤ 1.0 or tinting strength within ±3% is useful only when it has been explicitly agreed for the grade and test method; these figures are not promised as a blanket specification.

A parameter is shown only when a specific chemical identity, numerical value or published compatibility entry can be checked. If the manufacturer has not published a CAS number, light-fastness rating, oil absorption or other figure for that grade, the field is omitted rather than filled with a guessed value or a placeholder.

Chemical identities are compared with public records from sources such as PubChem, the U.S. EPA and other official registries, and CAS check digits are validated. Grade heat resistance, light fastness, oil absorption and resistance ratings are checked against UPBRIGHT’s published product and application tables. The admin system restores supported values when a known product record is edited incorrectly.

The application list and resin table describe systems covered by the available grade references. They help narrow sample selection but do not approve every formulation, processing condition or regulated end use. Confirm the commercial grade, resin or binder and relevant test conditions before evaluation.

Heat resistance is a test result tied to a medium and method, not a single material constant. Polymer type, binder, full shade or reduction, pigment loading, dwell time and evaluation criterion can produce different published values. The product page therefore keeps portfolio and application-table values separate instead of merging them into one maximum temperature.

The page summarizes the equipment and application areas used for color, dispersion and batch review. Exact equipment, method and test conditions are confirmed with each project.

A web swatch is rendered through a device-dependent RGB display, while the sample is a real material viewed under a defined illuminant. Monitor calibration, ambient light, surface gloss, opacity, film or plaque thickness and metamerism can all change the visual result. Use the online full-shade and tint swatches for orientation only; approve production against a retained physical standard and, where agreed, instrumental data under the specified illuminant and observer.

No. A published heat-resistance figure is a screening result from a defined test, not an automatic barrel, die or oven setpoint. Actual material exposure depends on melt or film temperature, residence time, shear, polymer, concentration and oxygen exposure. Keep the process within the resin supplier’s window, then confirm color change, strength and appearance through a time-and-temperature trial with the selected grade.

Some organic pigments can influence polyolefin crystallization, so a visual color match alone is insufficient. Compare the candidate and control in the same polymer lot, pigment loading, mold, gate, melt and mold temperature, holding pressure and cooling cycle. Measure the same part geometry after a defined conditioning period, and separate pigment effects from moisture, filler, mold imbalance and processing drift.

A TDS describes a grade’s technical properties and typical application guidance. An SDS covers handling, storage, transport and safety information. A COA reports results for the supplied production batch. The documents serve different purposes and should refer to the same product name or agreed commercial grade.

Availability depends on the exact grade, production route, destination market and end use. REACH registration or related documentation, EN 71-3, AP 89-1, FDA-related statements and food-contact information cannot be assumed to apply to an entire product family. Tell us the regulation, country and intended application so the relevant grade can be checked.

No. A CAS number identifies a chemical substance; it does not prove purity, impurity limits, migration behavior, manufacturing conditions or compliance for a finished product. Food-contact, toy and other regulated uses require an assessment of the specific grade, formulation, market and applicable legal limits.

No. Published figures support product selection, while incoming inspection and the batch COA verify the material actually delivered. Where shade, tinting strength, moisture, filtration or another item is critical, agree the acceptance method and limits before placing the order.

The report should identify the product and batch, reference standard, substrate or formulation, colorant loading, pigment-to-white or let-down ratio, preparation equipment, process conditions, conditioning time, test method and result units. Instrumental color data should also state the instrument geometry, illuminant, observer and color-difference equation. A pass statement without these conditions is difficult to reproduce or audit.

Yes. Evaluation samples are generally 100–200 g for the selected grade. Tell us the Color Index, resin or binder, target shade, processing temperature and delivery address. The product sample and courier arrangements are confirmed separately; freight depends on the destination and shipping method.

Provide the current trade name, Color Index, CAS if available, supplier TDS, standard sample or color chip, resin or binder, loading, processing temperature and the reason for substitution. If the incumbent grade has an agreed ΔE, FPV, strength or compliance requirement, include that specification before sampling.

Minimum order quantity and packaging depend on the product grade, available inventory, destination and transport method. Tell us the expected order quantity and preferred package size so we can confirm the available arrangement for that specific item rather than quote a generic MOQ.

Lead time depends on grade availability, order quantity, required batch testing, packaging and booking schedule. Courier, air and sea transit vary by destination. We confirm the estimated production or dispatch date and proposed shipping method for the actual enquiry rather than publish one delivery promise for every grade.

Common arrangements such as EXW, FOB, CIF or other suitable Incoterms can be discussed according to the destination and shipment. Relevant documents may include a commercial invoice, packing list, transport document, SDS, TDS and batch COA. Market-specific declarations or additional paperwork depend on the grade and order requirements.

State the print process—such as offset, flexo, gravure, screen or UV—the vehicle chemistry, solvent or water package, target viscosity, substrate, drying or curing route, required transparency or opacity, color strength and resistance requirements. A laboratory proof should use the intended film weight and substrate; grind, rheology, adhesion, rub and any packaging-resistance checks should follow the agreed method.

For pigment printing, specify the binder, thickener, fabric, print and cure conditions, then assess shade, handle, rubbing, washing and light fastness. For dope-dyed fiber, identify the polymer, pigment or dye concentration, spinning temperature, filtration, residence time and target denier; evaluate pressure behavior, spinneret deposits, break frequency, strength and shade after drawing or heat setting. The two routes require different grades and cannot share one generic approval.