Where is it Commonly Found?
Triphenyl phosphate (TPP) is a component of a major replacement for pentaBDE in polyurethane foam in furniture and juvenile products (New Materials International 2003). TPP is used as a flame retardant in PVC and printed wiring boards with polymer applications in high-impact polystyrene (HIPS), ABS, epoxy resins, and phenolic resins (US EPA 2011). TPP is also used in roofing paper, as a plasticizer in lacquers, varnishes, and hot-melt adhesives (O’Neil 2001), in hydraulic fluids and lubricant oils (WHO 1991).
US EPA’s Design for the Environment program predicted reproductive, neurological, and developmental toxicity and persistent degradation products from a common flame retardant mixture that contains TPP (US EPA 2005). Components of the mixture have been found in dust, sewage sludge, and marine mammals, suggesting that the flame retardant may be migrating from products and bioaccumulating in animals (Shaw et al., 2010). For TPP alone, EPA concluded there is a moderate human health hazard based on “systemic effects and eye irritation”. House dust concentrations of TPP have been associated with altered hormone levels and decreased semen quality in men (Meeker and Stapleton 2008).
The American Conference of Governmental Industrial Hygienists (ACGIH) found that TPP was not classifiable as a human carcinogen (class A4).
How is it Categorized?
Triphenyl phosphate, a colorless solid, is one of the orginal synthetic plasticizers for cellulose nitrate.
What are its Synonyms?
FIREMASTER 550 COMPONENT
PHENYL PHOSPHATE ((PHO)3PO)
PHOSPHORIC ACID, TRIPHENYL ESTER
TRIPHENYL ESTER OF PHOSPHORIC ACID
TRIPHENYL PHOSPHORIC ACID ESTER