Where is it Commonly Found?
Diphenyl cresyl phosphate is used as an alternative to decaBDE in polycarbonate/acrylonitrile-butadiene-styrene blends (Lowell 2005). Other uses are in polyvinyl plastics, cellulosic plastics, as an extreme-pressure lubricant, hydraulic fluid, gasoline additive, and in food packaging paint, lacquers and varnishes, and insulation (OECD 1998). Production of this chemical may increase as it is being considered as a replacement for halogenated flame-retardants such as decaBDE.
At least one repeated-dose toxicity study found DCP to be moderately toxic to the liver, kidneys and adrenals (OECD 1998). A 1994 National Toxicology Program (NTP) analysis found that commercial TCP contained approximately 20% dicresyl phosphates (NRC 2000), and DCP is structurally similar to tricresyl phosphate, so TCP’s toxicity profile is likely to be relevant to DCP; a subcommittee of the National Research Council cited an earlier conclusion that “there is no safe level of ingestion for TCP, and that exposure through inhalation or dermal contact should be minimized” (NRC 2000).
However, OECD considered DCP low risk due to low predicted concentrations in the environment. Contaminating water with DCP may cause eutrophication. DCP has high persistence in soil or water, but has low bioaccumulation and low mobility, according to a MSDS report (SCBT 2007). Further research on DCP by the National Toxicology Program was in progress, as of August 2011.
How is it Categorized?
CDP, DPK, DCP
Diphenyl Cresyl Phosphate, a clear transparent liquid with a very slight odor, is the primary hazard is to the environment. It easily penetrates the soil to contaminate groundwater and nearby waterways.
What are its Synonyms?
CRESOL DIPHENYL PHOSPHATE
DIPHENYL CRESOL PHOSPHATE
DIPHENYL TOLYL PHOSPHATE
METHYLPHENYL DIPHENYL PHOSPHATE
MONOCRESYL DIPHENYL PHOSPHATE
PHOSPHORIC ACID, CRESYL DIPHENYL ESTER
PHOSPHORIC ACID, DIPHENYL TOLYL ESTER
PHOSPHORIC ACID, METHYLPHENYL DIPHENYL ESTER
TOLYL DIPHENYL PHOSPHATE