Triphenyl Phosphate
Title: Triphenyl Phosphate
CAS Registry Number: 115-86-6
Molecular Formula: C18H15O4P
Molecular Weight: 326.28
Percent Composition: C 66.26%, H 4.63%, O 19.61%, P 9.49%
Line Formula: (C6H5O)3PO
Literature References: Prepd from P2O5 and phenol: Prahl, US 2805240 (1957); by reaction of triethyl phosphite with chloramine-T: Cadogan, Moulden, J. Chem. Soc. 1961, 3079. Toxicology: Sutton et al., Arch. Environ. Health 1, 33 (1960).
Properties: Nonflammable needles; mp 49-50°; bp11 245°. Insol in water. Sol in benzene, chloroform, ether, acetone, moderately sol in alcohol.
Melting point: mp 49-50°
Boiling point: bp11 245°
CAUTION: Potential symptoms of overexposure are minor changes in blood enzymes. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 322.
Use: Noncombustible substitute for camphor in celluloid; rendering acetylcellulose, nitrocellulose, airplane "dope", etc., stable and fireproof; impregnating roofing paper; plasticizer in lacquers and varnishes.

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