磷酸三甲苯酯，异构体混合物

Description

trixylyl phosphate, mixture of isomers · CAS 25155-23-1 · C24H27O4P. UNII 5TL8H5QK8V. Boiling Point: 469 to 509 °F at 10 mmHg (NTP, 1992); Boiling Point: BP: 243-265 °C at 10 mm Hg; Melting Point: -4 °F (USCG, 1999).

Identification

CAS Registry Number	25155-23-1
PubChem CID	19736
Molecular formula	C24H27O4P
IUPAC name	tris(2,4-dimethylphenyl) phosphate
UNII (FDA)	5TL8H5QK8V

Computed Descriptors

Molecular Weight	410.4
XLogP3	7.2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	6
Exact Mass	410.16469634
Monoisotopic Mass	410.16469634
Topological Polar Surface Area	44.8
Heavy Atom Count	29
Formal Charge	0

Physical & Chemical Properties

Boiling Point	469 to 509 °F at 10 mmHg (NTP, 1992)
Boiling Point	BP: 243-265 °C at 10 mm Hg
Melting Point	-4 °F (USCG, 1999)
Melting Point	-20 °C /pour point/
Flash Point	450 °F (NTP, 1992)
Flash Point	>245 °C (>473 °F) (Open Cup)
Solubility	In water, 0.89 ppm at 25 °C
Density	1.130 to 1.155 (USCG, 1999)
Density	1.142 at 38 °C/4 °C
Density	1.155

Physical description & handling notes

• Toxic by ingestion and skin absorption when pure. Produces phosphorus oxide gases during combustion. Primary hazard is threat to the environment. Immediate steps should be taken to limit spread to the environment. Easily penetrates soil to contaminate groundwater and nearby waterways.
• Liquid
• Liquid; [HSDB]
• Glassy
• Clear liquid
• Insoluble (NTP, 1992)

Regulatory Status

GHS notification summary	0.1% (1 / 1023)

GHS Hazard Classification

GHS notification summary	0.1% (1 / 1023)
Reported hazard statements	H319 (38.7%), H360 (60.2%), H373 (49.8%), H400 (89.1%), H410 (89.1%), H411 (10.2%), H315 (100%), H335 (100%)

Documented Uses

• Used as a flame retardant; [HSDB]
• Used in flame retardants, plasticizes, and hydraulic fluids; [HSDB]
• Used in flame retardants' compositions
• Non-flammable hydraulic fluid (steel works, furnaces, mines); polyvinyl chloride plasticizer /Trixylyl phosphate/
• ... /Flame retardant-plasticizer/ for wire and cable insulation ... usually used in blends with phthalates.
• The major current area of use is in power generation fluids.

Synonyms

Trixylenyl phosphate; Tri-xylenyl phosphate; Xylyl phosphate; Coalite NTP; Phosflex 179; Reofos 95; Xylenol, phosphate (3:1); Tri-dimethyl phenyl phosphate; Tris(dimethylphenol) phosphate; Phosphoric acid, trixylyl ester; Dimethylphenol phosphate (3:1); 7M08K25Q1J; Phenol, dimethyl-, phosphate (3:1); DTXSID9026267; ANTIBLAZE TXP; DURAD TXP

Frequently Asked Questions

What are the CAS number and molecular formula of trixylyl phosphate, mixture of isomers?

CAS 25155-23-1; molecular formula C24H27O4P; molecular weight — g/mol.

What other names is trixylyl phosphate, mixture of isomers known by?

Trixylenyl phosphate, Tri-xylenyl phosphate, Xylyl phosphate, Coalite NTP, Phosflex 179, Reofos 95.

Is trixylyl phosphate, mixture of isomers classified as hazardous?

0.1% of GHS notifications report no hazard classification (1 of 1023).

What are the key physical properties of trixylyl phosphate, mixture of isomers?

Boiling Point: 469 to 509 °F at 10 mmHg (NTP, 1992); Boiling Point: BP: 243-265 °C at 10 mm Hg; Melting Point: -4 °F (USCG, 1999); Melting Point: -20 °C /pour point/.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.