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Tinuvin® 312

Technical Datasheet | Supplied by BASF
Tinuvin® 312 by BASF is chemically Ethanediamide, N-(2-ethoxyphenyl)-N'-(2-ethylphenyl) grade. It acts as a UV absorber belonging to oxanilide class. Imparts outstanding light stability to plastics and other organic substrates. Features strong UV absorption, excellent compatibility in a wide variety of substrates, and low volatility. Protects polymers as well as organic pigments from UV radiation, helping to preserve the original appearance and physical integrity of molded articles, films, sheets, and fibers during outdoor weathering. Shows no impact on color & transparency of the substrate. Exhibits thermal stability, excellent chemical resistance, no reactivity with alkalis, additional thermal stability to polyamides. Also shows low wavelength absorbance. It can be combined with optical brighteners. Suitable for polyesters, PVC plastisol, polyurethanes, polyamides, polymethylmethacrylate, polybutyleneterephtalate, polycarbonates and cellulose esters. Recommended for rigid and flexible PVC and polyesters. Use level of Tinuvin® 312 ranges between 0.10 and 1.0 %, depending on substrate and performance requirements of the final application.
Product Type
Light Stabilizers / UV Absorbers
Chemical Composition
Ethanediamide, N-(2-ethoxyphenyl)-N'-(2-ethylphenyl)
CAS Number
Physical Form
Product Status
Applications/ Recommended for
  • TPE and TPV > TPU (or TPE-U)
  • PBT
  • UPR
  • PUR
  • PVC > PVC, rigid
  • PC
  • PA, Nylon
  • PVC > PVC, flexible
  • PMMA
  • Fibers/ Textiles/ Carpets > Fibers
  • Safety, regulation & environment > Low volatiles
  • Mechanical/ physical performance > Thermal resistance
  • Polymer protection > Weatherability (UV, moisture, Oxygen...)
Food contact approval

Tinuvin® 312 Properties


Value & Unit
Test Condition
Test Method
Molecular Weight
312 g/mol
Melting Point
124 - 127 °C
Specific Gravity
1.26 g/ml
(At 20°C)

Compatiblity with other products

Find products that are predicted to be compatible with Tinuvin® 312.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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