TRI-p-CRESYL PHOSPHATE

PRODUCT IDENTIFICATION
CAS NO 78-32-0

TRI-p-CRESYL PHOSPHATE
EINECS NO. 201-105-6
FORMULA (CH3C6H40)3PO
MOL WT. 368.37
H.S. CODE

TOXICITY
SYNONYMS Tris(p-cresyl) phosphate;
Triparacresyl phospate; p-Cresyl phosphate; p-Tolyl phosphate; Tris(p-cresyl) phosphate; Tris(p-methylphenyl) phosphate; Tris(p-tolyl) phosphate; Phosphoric acid, Tri-p-tolyl ester; m-Trioyl Phosphate; Phosphoric acid, tris(4-methylphenyl) ester; Phosphoric acid tris(4-methylphenyl) ester; p-Trikresylphosphate (German); Tri-4-Methylphenyl Phosphate;
SMILES cresols, phosphorus oxychloride

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

Pale yellow semi-solid
MELTING POINT 76 - 78 C
BOILING POINT

 
SPECIFIC GRAVITY  
SOLUBILITY IN WATER

Insoluble

SOLVENT SOLUBILITY

 
pH

 
VAPOR DENSITY  
HENRY'S LAW

 
NFPA RATINGS Health: 1; Flammability: 1; Reactivity: 0

REFRACTIVE INDEX

 
FLASH POINT  
STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION AND APPLICATIONS
Tricresyl Phosphate is used as a plasticizer for PVC, rubber and plastics. It is used as an ingredient for flame-retardant in plastics, rubbers and in hydraulic systems. It is used as a heat exchange media. It is used a solvent and thinner for nitrocellulose, paints and varnishes. It is also used as an additive in high-pressure cooling lubricants. It is used as a lead scavenger in gasoline.
SALES SPECIFICATION

APPEARANCE

 

ACID NUMBER

 
DENSITY

 
COLOR, HAZEN  
TRANSPORTATION
PACKING

 
HAZARD CLASS

 
UN NO.  
OTHER INFORMATION
Hazard Symbols: XN N, Risk Phrases: 21/22-51/53, Safety Phrases: 28A-37-45-61

GENERAL DESCRIPTION OF CRESOL
Cresols are methyl substituted phenols at relative to the hydroxyl group, ortho-, meta-, and para-cresol. There are three structural isomers. The names of the three compounds indicate which of the hydrogens on the benzene ring portion of the molecule have been replaced. They are obtained from coal tar or petroleum as by-products in the fractional distillation and in coal gasification. They are also formed as by-products during the combustion of wood. The various isomers can be manufactured by the methylation of phenol, toluene sulfonation and alkaline hydrolysis, or the hydrolysis of 2-isopropyltoluene or alkaline chlorotoluene. Because the boiling points of these three compounds are nearly the same, a separation of a mixture of the three into its pure components is impractical. They are highly flammable and soluble in water, ethanol, ether, acetone and alkali hydroxides. The mixture of cresols obtained from coal tar is called cresylic acid, an important technical product used as a disinfectant and in the manufacture of resins and tricresyl phosphate. Cresylic acid also refs to the mixture of phenols containing varying amounts of xylenols, cresols, and other high-boiling fractions, but not more than 5 percent phenol. Commercial cresols are prepared in a wide range of grades and purities to meet the user's requirements.  It is a liquid from clear to brown and is toxic to animals including human. It is corrosive and is a more powerful disinfectant and antiseptic than phenol. The primary use is for sterilizing as disinfectants and deodorizers, and pesticides. Its solution is used as household cleaners as a disinfectant. Creosote products are mixtures of many aromatic hydrocarbons including phenols and cresols. Creosote obtained from coal tar is poisonous and provides protection against fungi, shipworms, termites, and psoriasis. It is used chiefly as a wood preservative, e.g., in wooden poles, railroad ties, and timber. They are also used as animal and bird repellents. Animals may suffer skin irritation or ulceration from creosote treated wood. Coal tar creosote and its derivatives are the most widely used wood preservatives. Wood tar creosote is a mixture of chiefly guaiacol, creosols and other phenolic compounds obtained from wood tar (mainly beech) by distillation between 203 and 220 C. It is insoluble in water, soluble in methanol, acetone. It is used as an external antiseptic, expectorant, gastric sedative, deodorant, and as an antiseptic parasiticide veterinary use in the form of creosote carbonate. It is used in the synthesis of pharmaceuticals and vanillin. Each cresols are used as solvents or disinfectants and as useful as raw materials for various chemical products including;
  • Antiseptics, disinfectants
  • Fragrances, deodorizing, odor-enhancer
  • Resins (phenol-formaldehyde, phenolic, and epoxy) and their additives
  • Phosphate esters (plasticizers)
  • Herbicides and pharmaceuticals
  • Rubber and plastic antioxidants
  • Dyes and pigments
  • Household cleaners and automotive degreasers
  • Solvent and paints
  • Lubricating oils, gasoline additives
  • Adhesives
  • Fiber and wood preservatives
  • UV- absorbers and photographic chemicals
  • Ore flotation agents

Cresols undergo electrophilic substitution reactions such as chlorination, bromination, sulfonation and nitration at the vacant position. They also undergo condensation reactions with aldehydes, ketones or dienes. O-cresol is a starting material for the synthesis of herbicides such as 4,6-dinitro-o-cresol (DNOC) and 2-methyl-4-chlorophenoxyacetic acid (MCPA). Meta-cresol is used in the manufacture of explosives. Meta and para-cresol are used in phenol-formaldehyde resins and are converted to tricresyl phosphate used as a plasticizer and gasoline additive and antioxidants such as di-tert-butylcresols (BHT). Ortho- and para-cresols are used in the production of lubricating oils and motor fuels.