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tri-o-tolyl phosphate

CAS 78-30-8C21H21O4PMW 368.4

tri-o-tolyl phosphate (CAS 78-30-8) — formula C21H21O4P, molecular weight 368.4; category inorganic chemicals.

Product Overview

CAS Number78-30-8
Molecular FormulaC21H21O4P
Molecular Weight368.4
Melting Point11 °C
Boiling Point410 °C
LogP6.1
ApplicationsUses: Used as a flame retardant, plasticizer, lubricant, additive to gasoline and hydraulic fluids, and intermediate for pharmaceuticals. Also used in coatings and adhesives, in adhesives for air filter media, as a heat exchange medium, a waterproofing agent, an extraction solvent, and in solvent mixtures for resins, [ACGIH], As plasticizer in lacquers and varnishes., ... Flame retardent and plasticizer, in hot extrusion molding and bulk forming of plasticized polyvinyl chloride, in coatings and adhesives, as a gasoline additive to control pre-ignition, in hydraulic fluids, a synthetic lubricant, as a water proofing agent, as a component of adhesives for air filter media, an intermediate in the synthesis of pharmaceuticals, and in a solvent mixture for various resins., As additive to extreme pressure lubricants, as a non-flammable fluid in hydraulic systems, as plasticizer in lacquers and varnishes, as plasticizer in vinyl plastics manufacture, as flame retardant, as lead scavenger in gasoline, and as solvent for nitrocellulose, in cellulosic molding compositions., Aryl phosphates such as tricresyl phosphate ... or cresyl diphenyl phosphates ... when added in small percentages to the gasoline, combat misfires., Aryl phosphates, Tricresyl phosphate (ortho-, meta- and para-isomers) is used in flexible PVC, cellulose nitrate, ethylcellulose coatings, and various rubbers. Typical applications are vinyl tarpaulins, mine conveyer belts, air ducts, cable insulation, and vinyl films ... usually used in blends with phthalates., Methods of Manufacturing: Prepared from cresol and phosphorus oxychloride, phosphoric acid, or phosphorus pentachloride. The grades of cresol commonly used are the isomeric (o-, m-, p-), and meta-para mixtures fom coal tar and cresylic acid from petroleum. Purification of the product is based on the intended use, the commercial product is generally obtained as a mixture. A "refined grade" of tricresyl phosphate is prepared by vacuum distillation, or alternatively by washing with 2% sodium hydroxide and water ... ., Tricresyl phosphate, General Manufacturing Information: Phosphoric acid, tris(2-methylphenyl) ester: ACTIVE, Commercial tricresyl phosphates may contain 1% TOCP, manufacturing precautions have been used to reduce the concentrations found in historical preparations which contained upwards of 20% TOCP., ... A) ARYL PHOSPHATES ... NOT SUITABLE FOR PLASTICS IN CONTACT WITH FOODSTUFFS, C) ... SHOULD NOT BE USED IN ARTICLES INTENDED FOR WEAR DIRECTLY ON SKIN OR ARTICLES ... HANDLED BY CHILDREN., ARYL PHOSPHATES, Tri-o-cresyl phosphate (TOCP), ... occurs as a contaminant in industrial-grade tricresyl phosphate, which contains predominately the meta- and para-isomers ... .
CategoryInorganic Chemicals

Applications

Documented applications: Uses: Used as a flame retardant, plasticizer, lubricant, additive to gasoline and hydraulic fluids, and intermediate for pharmaceuticals. Also used in coatings and adhesives, in adhesives for air filter media, as a heat exchange medium, a waterproofing agent, an extraction solvent, and in solvent mixtures for resins, [ACGIH], As plasticizer in lacquers and varnishes., ... Flame retardent and plasticizer, in hot extrusion molding and bulk forming of plasticized polyvinyl chloride, in coatings and adhesives, as a gasoline additive to control pre-ignition, in hydraulic fluids, a synthetic lubricant, as a water proofing agent, as a component of adhesives for air filter media, an intermediate in the synthesis of pharmaceuticals, and in a solvent mixture for various resins., As additive to extreme pressure lubricants, as a non-flammable fluid in hydraulic systems, as plasticizer in lacquers and varnishes, as plasticizer in vinyl plastics manufacture, as flame retardant, as lead scavenger in gasoline, and as solvent for nitrocellulose, in cellulosic molding compositions., Aryl phosphates such as tricresyl phosphate ... or cresyl diphenyl phosphates ... when added in small percentages to the gasoline, combat misfires., Aryl phosphates, Tricresyl phosphate (ortho-, meta- and para-isomers) is used in flexible PVC, cellulose nitrate, ethylcellulose coatings, and various rubbers. Typical applications are vinyl tarpaulins, mine conveyer belts, air ducts, cable insulation, and vinyl films ... usually used in blends with phthalates., Methods of Manufacturing: Prepared from cresol and phosphorus oxychloride, phosphoric acid, or phosphorus pentachloride. The grades of cresol commonly used are the isomeric (o-, m-, p-), and meta-para mixtures fom coal tar and cresylic acid from petroleum. Purification of the product is based on the intended use, the commercial product is generally obtained as a mixture. A "refined grade" of tricresyl phosphate is prepared by vacuum distillation, or alternatively by washing with 2% sodium hydroxide and water ... ., Tricresyl phosphate, General Manufacturing Information: Phosphoric acid, tris(2-methylphenyl) ester: ACTIVE, Commercial tricresyl phosphates may contain 1% TOCP, manufacturing precautions have been used to reduce the concentrations found in historical preparations which contained upwards of 20% TOCP., ... A) ARYL PHOSPHATES ... NOT SUITABLE FOR PLASTICS IN CONTACT WITH FOODSTUFFS, C) ... SHOULD NOT BE USED IN ARTICLES INTENDED FOR WEAR DIRECTLY ON SKIN OR ARTICLES ... HANDLED BY CHILDREN., ARYL PHOSPHATES, Tri-o-cresyl phosphate (TOCP), ... occurs as a contaminant in industrial-grade tricresyl phosphate, which contains predominately the meta- and para-isomers ... ..

Technical Profile

What this product is

tri-o-tolyl phosphate is an inorganic compound with CAS registry number 78-30-8 and molecular formula C21H21O4P (molecular weight 368.4), belonging to the inorganic chemicals segment of chemical raw materials.

Identification

CAS number: 78-30-8

Its molecular formula C21H21O4P comprises 21 C, 21 H, 4 O, 1 P atoms.

Also known as: tri-o-tolyl phosphate · 磷酸三邻甲苯酯

Category: inorganic chemicals

Frequently Asked Questions

What is the CAS number of tri-o-tolyl phosphate?

The CAS registry number of tri-o-tolyl phosphate is 78-30-8.

What is the molecular formula and molecular weight of tri-o-tolyl phosphate?

Molecular formula C21H21O4P, molecular weight 368.4.

What other names is tri-o-tolyl phosphate known by?

It is also registered under: tri-o-tolyl phosphate, 磷酸三邻甲苯酯.

What are the documented applications of tri-o-tolyl phosphate?

Recorded applications: Uses: Used as a flame retardant, plasticizer, lubricant, additive to gasoline and hydraulic fluids, and intermediate for pharmaceuticals. Also used in coatings and adhesives, in adhesives for air filter media, as a heat exchange medium, a waterproofing agent, an extraction solvent, and in solvent mixtures for resins, [ACGIH], As plasticizer in lacquers and varnishes., ... Flame retardent and plasticizer, in hot extrusion molding and bulk forming of plasticized polyvinyl chloride, in coatings and adhesives, as a gasoline additive to control pre-ignition, in hydraulic fluids, a synthetic lubricant, as a water proofing agent, as a component of adhesives for air filter media, an intermediate in the synthesis of pharmaceuticals, and in a solvent mixture for various resins., As additive to extreme pressure lubricants, as a non-flammable fluid in hydraulic systems, as plasticizer in lacquers and varnishes, as plasticizer in vinyl plastics manufacture, as flame retardant, as lead scavenger in gasoline, and as solvent for nitrocellulose, in cellulosic molding compositions., Aryl phosphates such as tricresyl phosphate ... or cresyl diphenyl phosphates ... when added in small percentages to the gasoline, combat misfires., Aryl phosphates, Tricresyl phosphate (ortho-, meta- and para-isomers) is used in flexible PVC, cellulose nitrate, ethylcellulose coatings, and various rubbers. Typical applications are vinyl tarpaulins, mine conveyer belts, air ducts, cable insulation, and vinyl films ... usually used in blends with phthalates., Methods of Manufacturing: Prepared from cresol and phosphorus oxychloride, phosphoric acid, or phosphorus pentachloride. The grades of cresol commonly used are the isomeric (o-, m-, p-), and meta-para mixtures fom coal tar and cresylic acid from petroleum. Purification of the product is based on the intended use, the commercial product is generally obtained as a mixture. A "refined grade" of tricresyl phosphate is prepared by vacuum distillation, or alternatively by washing with 2% sodium hydroxide and water ... ., Tricresyl phosphate, General Manufacturing Information: Phosphoric acid, tris(2-methylphenyl) ester: ACTIVE, Commercial tricresyl phosphates may contain 1% TOCP, manufacturing precautions have been used to reduce the concentrations found in historical preparations which contained upwards of 20% TOCP., ... A) ARYL PHOSPHATES ... NOT SUITABLE FOR PLASTICS IN CONTACT WITH FOODSTUFFS, C) ... SHOULD NOT BE USED IN ARTICLES INTENDED FOR WEAR DIRECTLY ON SKIN OR ARTICLES ... HANDLED BY CHILDREN., ARYL PHOSPHATES, Tri-o-cresyl phosphate (TOCP), ... occurs as a contaminant in industrial-grade tricresyl phosphate, which contains predominately the meta- and para-isomers ... ..

Which category does tri-o-tolyl phosphate belong to?

Category: Inorganic Chemicals.

PubChem Public Data

Independent reference data for tri-o-tolyl phosphate (CAS 78-30-8), compiled from public chemistry databases.

Registry identifiers across databases

CAS Registry Number78-30-8
PubChem CID6527
Molecular formulaC21H21O4P
IUPAC nametris(2-methylphenyl) phosphate
UNII (FDA)X8II18JD0A

Computed descriptors

Molecular Weight368.4
XLogP36.1
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count4
Rotatable Bond Count6
Exact Mass368.11774614
Monoisotopic Mass368.11774614
Topological Polar Surface Area44.8
Heavy Atom Count26

Physicochemical values on record

Boiling Point410 °C
Boiling Point410 °C @760 [mm Hg]
Melting Point11 °C
Melting Point-22-(-)13 °F
Melting Point52 °F
Flash Point437 °F ( 225 °C) (Closed cup)
Flash Point225 °C c.c.
Flash Point437 °F
Density1.1955 g/cu cm at 20 °C
Density1.16

Documented uses on record

    Used as a flame retardant, plasticizer, lubricant, additive to gasoline and hydraulic fluids, and intermediate for pharmaceuticals. Also used in coatings and adhesives, in adhesives for air filter media, as a heat exchange medium, a waterproofing agent, an extraction solvent, and in solvent mixtures for resins; [ACGIH]As plasticizer in lacquers and varnishes.

    Synonyms and trade names

    Tri-o-tolyl phosphate; TRI-O-CRESYL PHOSPHATE; 78-30-8; TOCP; Phosphoric acid, tris(2-methylphenyl) ester; o-Cresyl phosphate; Triorthocresyl phosphate; Phosflex 179C; Tris(o-tolyl) phosphate; Trojkrezylu fosforan; Tri-2-methylphenyl phosphate; Tris(o-cresyl)-phosphate; o-Trikresylphosphate; Tris(o-methylphenyl)phosphate; Phosphoric acid, tri-o-cresyl ester; Tris(o-tolyl)-phosphate

    Regulatory listings held on file

    GHS notification summary0.3% (1 / 291)

    GHS hazard classification

    GHS notification summary0.3% (1 / 291)
    Reported hazard statementsH370, H411, H302 (41.2%), H400 (35.7%), H372, H373

    H370 **: Causes damage to organs [Danger Specific target organ toxicity, single exposure]

    H411: Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

    What the public record says

    tri-o-tolyl phosphate · CAS 78-30-8 · C21H21O4P. UNII X8II18JD0A. Boiling Point: 410 °C; Boiling Point: 410 °C @760 [mm Hg]; Melting Point: 11 °C.

    Physical description and handling notes

    Source: PubChem / Wikidata; the batch COA governs where values differ.

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