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TCP(Tri cresyl phosphate)
PRODUCT IDENTIFICATION
 
CAS No.:1330-78-5
EINECS No.:215-548-8
FORMULA:(CH3C6H40)3PO
MOL WT.:368.37
H.S. CODE: 
TOXICITY:Oral rat LD50: 300 mg/kg
SYNONYMS:TCP; Tritolyl phosphate;
  Phosphoric acid tritolyl ester; Cresyl phosphate; Tris(methylphenyl)ester of phosphoric acid; Phosphoric acid tris(methylphenyl) ester; Tricresyl phosphates; Tritolyl phosphate; Tricresyl phosphate; Phosphoric acid tolyl ester; Thiorthocresyl phosphate; Tris(tolyloxy)phosphine oxide;
 
CLASSIFICATION
  PHYSICAL AND CHEMICAL PROPERTIES
 
PHYSICAL STATE:clear to pale yellow oily liquid
MELTING POINT:< -40C
BOILING POINT:240 - 255 C at 10 mmHg
SPECIFIC GRAVITY:1.143
SOLUBILITY IN WATER:Insoluble (0.36 mg/l)
SOLVENT:SOLUBILITY
REFRACTIVE INDEX:1.555
FLASH POINT:> 225 C
STABILITY:Stable under ordinary conditions
  GENERAL DESCRIPTION & APPLICATIONS
  Tricresyl phosphate (TCP) is a non-flammable, viscous clear liquid; insoluble in water, It is stable in neutral and acidic media at normal temperatures. But it is readily hydrolysed in an alkaline medium, producing dicresyl phosphate and cresol. Commercial TCP is the mixture of isomers (ortho-, meta-, and para-isomers). TCP is produced by the reaction of cresols (or cresylic acid) with phosphorus oxychloride. Tricresyl phosphate is used;
 
  1. as a solvent and thinner for nitrocellulose, paints acrylate lacquers, and varnishes
  2. as a plasticizer for PVC processing
  3. as an ingredient for flame-retardant in plastics, rubbers and in hydraulic systems.
  4. as a heat exchange media
  5. as an additive in high-pressure cooling lubricants
  6. as a lead scavenger in gasoline.
  Esters of phosphoric acid (called organophosphates) are used in industrial applications as flame-retardants and plasticizers (affording some flame retardancy) in plastics, rubbers and varnishes. Organophosphates are the most commonly used flame-retardants in that group. Hydraulic fluids and lubricants also contain organophosphates such as tricresyl phosphates, triaryl or trialkyl phosphates to enhance their properties in use. Organophosphates are used as defoamers in antifreze solutions, in pulp and paper production and for oil field drilling needs. They can be used as antifoam agents in detergent solutions, and in various emulsions, paints, and adhesives. Some alkyl phosphates are used as adhesive promoters and for corrosion protection in coatings. Phosphoric acid alkyl esters produced generally by the reaction of either alcohols, alcohol ethoxylates or phenyl ethoxylates with polyphosphoric acid or phosphorous pentoxide are anionic surfactants which have the main feature of the stability in alkaline conditions over other surfactants. They have a wide range of properties including outstanding wetting, emulsification, lubrication, coupling activity and detergency. They exhibit the properties of anti-wear and corrosion inhibition either as free esters or in the forms of metal and amine salts. They are also used as alkylation agent for nitrogen heterocyclic compounds and as catalysts to produce phenolic and urea resins. They are used as solvents in liquid-liquid extractants or separation agent of metals. They are is used as heat exchange media and as pigment grinding assistants and antifoam agents.
  Synthetic high-temperature lubricating oil consisting of tri-o-cresyl phosphate 2%, tri-m-cresyl phosphate 42%, tri-p-cresyl phosphate 31%, tris(dimethylphenyl) phosphates 18%, tris(ethylphenyl) phosphate 6%, other triaryl phosphates 1%.
 
SALES SPECIFICATION
 
APPEARANCEclear to pale yellow oily liquid
ACID NUMBER0.1 max (mg KOH/kg)
DENSITY1.185 ± 0.01
COLOR, HAZEN350max
 
TRANSPORTATION
 
PACKING220kgs in drum
HAZARD CLASS6.1 (Packing Group: II)
UN NO.2574
 
OTHER INFORMATION
  Hazard Symbols: XN N, Risk Phrases: 21/22-51/53, Safety Phrases: 28-61