FULL SHADES.R.149
TINT
Digital color reference · physical approval required
SOLVENT DYES
Solvent Red 149
Solvent Red 149 is a fluorescent bluish-red dye used in compatible transparent plastics and selected polyester applications. Evaluate the fluorescent effect separately from ordinary color strength, using the final article thickness and intended illumination.
- Color Index / grade
- S.R.149
- CAS
- 21295-57-8
- Chemical family
- Anthraquinone solvent dye
- Published heat resistance
- 300 °C
Typical application scopeCompatible plastics; selected fiber uses require a suitable grade.
PRODUCT PROFILE
S.R.149Solvent Red 149 — grade profile
Solvent Red 149 (S.R.149) is a anthraquinone solvent dye for coloration in Plastics & masterbatch and Textiles & fibers. Grade selection should be verified for polymer compatibility, actual processing temperature, target transparency and migration requirements; the data below is limited to values supported by published sources.
Published screening data includes published heat reference 300 °C. Application-specific heat and fastness entries in the technical table take precedence.
Primary listed fits include GPPS, Polystyrene (PS), PMMA, ABS, PET and Synthetic fiber; Rigid PVC are listed for evaluation.
Selection focus
Confirm polymer compatibility, transparency, dissolution, actual melt temperature, loading, and migration and light-fastness requirements in the finished article.
REFERENCE SHADE
Full shade and tint
Fluorescent bluish red
Full shade
Tint / reduction
Manufacturer-published shade descriptions were used to correct the color direction. Screen colors remain visual references, not batch standards; approve a physical drawdown or molded plaque under agreed test conditions.
TECHNICAL DATA
Published specifications
Only identified or numerical fields supported by public registry and product-table data are shown. Unpublished values are omitted.
ParameterPublished value
Product nameSolvent Red 149
Color Index / product gradeS.R.149
Colorant categorySolvent dyes
CAS number21295-57-8
Molecular formulaC23H22N2O2
Chemical familyAnthraquinone solvent dye
Physical appearanceColored powder
TransparencyTransparent
Heat resistance · catalogue reference300 °C
Performance values are catalogue references. The current grade TDS, test conditions and agreed batch COA govern product approval.
RESIN & APPLICATION FIT
Resin and end-use fit at a glance
Application areaRecommendedEvaluate
Plastics & masterbatch
GPPSPolystyrene (PS)PMMAABSPET
Rigid PVC
Textiles & fibers
Synthetic fiber
—
Application listings support initial selection and still require validation in the customer's resin, binder, process and end-use conditions.