Environmental Profiles of Chemical Flame-Retardant Alternatives for

Physical/Chemical Properties
Triphenyl phosphate
CAS 115-86-6
MF C 18H 15O 4P
MW 326.29
SMILES c1ccccc1OP(=O)(Oc2ccccc2)Oc3ccccc3
Physical/Chemical Properties
Water Solubility (mg/L):
Conclusion: The available water solubility data are adequate.
Basis for Conclusion: The two best-documented studies, including one that followed an OECDguideline
test, report solubilities of 1.9-2.1 ppm.
Solubility (mg/L) Reference
Insoluble Budavari, 2001 (The Merck Index); Lewis, 2000 (Sax’s Dangerous Properties of
Industrial Materials); Lide and Milne, 1995 (CRC Handbook of Data on Common
Organic Compounds); Lewis, 1997 (Hawley’s Condensed Chemical Dictionary)
1.90 Saeger et al., 1979 (shake-flask method using Milli-Q purified water); Huckins et al.,
1991; SRC, 2004 (PHYSPROP database)
2.1±0.1 Ofstad and Sletten, 1985 (OECD Guideline 105 (column-elution) from a mixture at
25°C)
1.4-1.6 Howard and Deo, 1979 (in buffered distilled water, pH 4.4-9.5 at 21°C)
0.2-0.3 Howard and Deo, 1979 (in filtered lake or river water, pH 7.8-8.2 at 21°C)
0.73 Hollifield, 1979
0.714 Kuhne et al., 1995
Log K ow:
Conclusion: The available log K ow data are adequate.
Basis for Conclusion: A variety of reputable studies report log K ow values in the range of 4.5­
4.7.
Log K ow
Reference
4.59 SRC, 2004 (PHYSPROP database); Hansch et al., 1995
3.9 Unpublished data cited in Bengtsson et al., 1986
4.61 Mayer et al., 1981; Huckins et al., 1991
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