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Description and features
Phostacon TTDP (Tri iso tridecyl phosphite) is a clear liquid with has C39H81O3P as chemical formula. It is a trialkyl phosphite which is applied as secondary stabilizer in ABS, PET, PET fibers, lubricants, PVC, polycarbonate and polyurethanes.

Tri iso  tridecyl phosphite is also known as tris(11-methyldodecyl) phosphite.

Product information

CAS number77745-66-5
EC number 278-758-9
HS code2920 90 85
SensitivityNot hygroscopic

Molecular and sructural information

Molecular formulaC39H81O3P
Molecular weight629.03 g/mol
Structural formula:77745-66-5


AppearanceClear liquid
Acid value≤0.20 (mg KOH/gm)
Colour (APHA)≤50
Phosphorus content4.90 %

Physicochemical information

Boiling point520.01 °C
Density0.8863 g/cm3 @ 25 ºC
Flash point154 ºC
Melting point<-20 ºC
Partition coefficient (log Kow)16.73 @ 25 ºC
Refractive index1.4600 - 1.4700 @ 25 ºC
Specific gravity0.880 - 0900 g/m3 (25 ºC / 15 ºC)
Solubility in waterInsoluble (< 0.1 mg/l)
Vapour pressure< 0.00000114 Pa @ 25 ºC

Phostacon TTDP (Tri iso tridecyl phosphite) is mainly used in production of PVC.

Available packaging: 180 KG steel drums.
Special packaging is available on request.

Shipment Info
Europe and United States: Provided Phostacon TTDP is on stock in our local warehouses our lead time is about one week if delivered in 180 KG drums.
Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

Store Tri Iso Tridecyl Phosphite in a cool, dry and well-ventilated area and in line with legal requirements.
Keep TTDP away from heat sources and oxidizing agents.

This substance (CAS: 77745-66-5) has been pre-registered under REACH (EC) 1907/2006.

A Material Safety Data Sheets (MSDS) is available for Phostacon TTDP and all other products supplied by Vesta Intracon BV. An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.

Tri Iso Tridecyl Phosphite : Disclaimer. This information is supplied solely for informational purposes and Vesta Intracon bv makes no guarantees or warranties, either expressed or implied, with respect to the accuracy and use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale. Nothing in this document is legal advice or is a substitute for competent legal advice.