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TBP (Tributyl phosphate)
TBP=Tributyl phosphate= Phosphoric acid tributyl ester= Tri-n-butyl phosphate
CAS NUMBER:126-73-8
EC NUMBER:204-800-2
Molecular Weight:266.32
Molecular Formula: (CH3CH2CH2CH2O)3PO
DEFINITION OF TBP (Tributyl phosphate)
Tributyl phosphate, known commonly as TBP, is an organophosphorus compound with the chemical formula (CH3CH2CH2CH2O)3PO.
TBP (Tributyl phosphate) is an ester of phosphoric acid with n-butanol.
Tributyl phosphate is a trialkyl phosphate that is the tributyl ester of phosphoric acid.
Tributyl phosphate is an endocrine disrupting compound.
USES/BENEFITS OF TBP (Tributyl phosphate)
TBP is a solvent and plasticizer for cellulose esters such as nitrocellulose and cellulose acetate.
Tributyl phosphate forms stable hydrophobic complexes with some metals; these complexes are soluble in organic solvents as well as supercritical CO2.
The major uses of TBP in industry are as a component of aircraft hydraulic fluid, brake fluid, and as a solvent for extraction and purification of rare-earth metals from their ores.
TBP finds its use as a solvent in inks, synthetic resins, gums, adhesives (namely for veneer plywood), and herbicide and fungicide concentrates.
As Tributyl phosphate has no odour, Tributyl phosphate is used as an anti-foaming agent in detergent solutions, and in various emulsions, paints, and adhesives.
Tributyl phosphate is also found as a de-foamer in ethylene glycol-borax antifreeze solutions.
In oil-based lubricants addition of TBP increases the oil film strength.
Tributyl phosphate is used also in mercerizing liquids, where Tributyl phosphate improves their wetting properties.
Tributyl phosphate can be used as a heat-exchange medium.
TBP is used in some consumer products such as herbicides and water-thinned paints and tinting bases.
Tributyl phosphate (TBP) is a strong polar solvent used in the production of solutions of synthetic resins and natural rubber.
In both cellulose based plastics and synthetic resins, TBP is used as a flame-retarding plasticizer.
TBP is employed as a pasting agent for pigment pastes.
Due to the limited influence of temperature on the viscosity of TBP, TBP also serves as an important component in the manufacture of hydraulic fluids for aircraft.
As a very strong wetting agent, TBP is used in the textile industry and in the field of adhesives.
As a neutral extractant it is able to extract both acids and metal cations.
TBP is used as a solvent for cellulose esters, lacquers, and natural gums, as a primary plasticizer in the manufacture of plastics and vinyl resins, and as an antifoam agent
In recent years, there has been a considerable increase in the use of TBP as an extractant in the dissolution process in conventional nuclear fuel processing and in the preparation of purified phosphoric acid (wet phosphoric acid method)
Some 40% to 60% of all TBP consumed (probably in the USA) is used as a base stock in the formulation of fire-resistant aircraft hydraulic fluids (US EPA, 1985).
In Japan, 140 tonnes was used in 1984 as an antifoaming agent (mainly in paper manufacturing plants), 40 tonnes as a metal extractant, and 50 tonnes for miscellaneous purposesa.
TBP is also used as a constituent of cotton defoliants, which act by producing leaf scorching .
shortly,
-stable
-very good solvent
-antifoaming agent.
-a plasticizer for cellulose esters, lacquers, plastics, and vinyl resins.
-a complexing agent in the extraction of heavy metals, especially for the extraction of metal ions from solutions of reactor products in nuclear fuel reprocessing.
-an aircraft hydraulic fluid.
-a heat exchange medium and dielectric.
-a pigment-grinding agent.
APPLICATIONS OF TBP (Tributyl phosphate)
Tributyl Phosphate is a very strong, polar solvent.
TBP is used as strong wetting agent in the textile industry and as antifoam agent.
In addition TBP is applied as neutral extractant in the extraction of acids or metal cations.
Tributyl phosphate was employed as:
-solvent in the solvent-detergent method for production of immunoglobulin for inactivation of viruses with lipid envelope on the model of duck hepatitis B virus
-ligand in the extraction of lanthanide ions from solid and liquid materials by supercritical CO2
-extractant for metal complexes
Tri-N-butyl Phosphate is tri-n-butyl phosphate, Bu3-P, TBP.
Tributyl phosphate defoamer is a plasticizer for nitrocellulose, cellulose acetate, chlorinated rubber and polyvinyl chloride, rare metal extractant, etc., developed, soluble in many organic solvents, insoluble Yushui is widely used in a wide range of industries.
Due to its low surface tension,Tributyl phosphate defoamer is hardly soluble in water and can be used as an industrial defoamer, effectively defoaming the formed foam film in an unstable state.
Tributyl phosphate defoamer is suitable for using in building material, communal facilities, structural engineering, ACE coating, printing ink, adhesive, emulsion polymerization, etc.
Advantages of Tributyl phosphate defoamer
-Fast defoaming ability, lasting foam suppressing effect, small dosage, not any effect to the basic property of foaming system.
-Good heat resistance, good chemical stability, non-corrosive, non-toxic, non-flammable, non-explosive, no adverse side affect.
-Comparable with top quality product on market, while the price is much more affordable.
TBP application areas are shortly;
•Catalysis and Chemicals Processing
•Chemical synthesis
•Polymers
•Manufacturing of plastics
•Manufacturing of rubber, latex
•Hydraulic oils
•Dyestuffs, pigments and optical brighteners
•Defoamer is paints, emulsions, adhesives, petroleum drilling, paper making industry, detergents and ethylene glycol-based antifreezes
•Hydrometallurgical extraction and purification of rare earth metals from the ores
•Solvent for inks, resins, gums and adhesive
•Plasticizer for nitrocellulose and cellulose acetate
•Nonflammable constituent for hydraulic fluids
•increasing the film stability of oil-based lubricants
•Herbicides, pesticides and fungicides
•Wetting improvement in mercerizing liquids in textile applications
SAFETY MEASURES
•First aid measures
1.Inhalation:
Remove to fresh air.
If not breathing, give artificial respiration.
If breathing is difficult, give oxygen. Get medical attention.
2.Ingestion:
Give large amounts of water to drink.
Never give anything by mouth to an unconscious person.
Get medical attention.
3.Skin Contact:
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Get medical attention.
Wash clothing before reuse.
Thoroughly clean shoes before reuse.
4.Eye Contact:
Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids occasionally.
Get medical attention immediately.
•Firefighting measures
Fire:Flash point: 120C (248F) OC
Slight fire hazard when exposed to heat or flame.
Explosion: Above the flash point, explosive vapor-air mixtures may be formed.
Fire Extinguishing Media:Water spray, dry chemical, alcohol foam, or carbon dioxide. Water or foam may cause frothing.
Special Information:
In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode.
•Handling and Storage
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage.
Isolate from incompatible substances.
Containers of this material may be hazardous when empty since they retain product residues (vapors, liquid); observe all warnings and precautions listed for the product.
PRODUCTION OF TBP (Tributyl phosphate)
Tributyl phosphate is manufactured by reaction of phosphoryl chloride with n-butanol.
POCl3 + 3 C4H9OH → PO(OC4H9)3 + 3 HCl
Production is estimated at 3,000–5,000 tonnes worldwide.
PHYSICAL PROPERTIES OF Tributyl phosphate
Appearance: Colorless to yellowish liquid.
Odor: Odorless.
Solubility: Slightly soluble in water.
Specific Gravity: 0.98 @ 25C/25C
pH:No information found.
% Volatiles by volume @ 21C (70F):No information found.
Boiling Point: 289C (552F)
Melting Point:-80C (-112F)
Vapor Density (Air=1):9.2
Vapor Pressure (mm Hg):0.8 @ 114C (237F)
Evaporation Rate (BuAc=1):No information found.
Auto-ignition temperature: >482°C
Flash point: 146°C o.c.
Refractive index:1.423
Surface tension:28.15 dyn/cm
Dielectric constant: 8.29
Dipole moment: 2.92 D
Molecular refractive power: 69.48 mL/mol
Miscible with:(+-)-3-chloro-1,2-propanediol, (E)-3-phenyl-2-propenal, (R,S)-2,3-butanediol, 1,2-diacetoxyethane, 1,2-propanediol, 1,3-butanediol, 1,3-propanediol, 1-heptadecanol, 1-tetradecanol, 2,6,8-trimethyl-4-nonanone, 2,6-dimethyl-4-heptanone, 2-(2-butoxyethoxy)ethanol, 2-(2-ethoxyethoxy)ethanol, 2-(2-methoxyethoxy)ethanol, 2-bromoethyl acetate, 2-butoxyethanol, 2-chloroethanol, 2-ethoxyaniline, 2-ethoxyethanol, 2-ethylbutanoic acid, 2-methoxyethanol, 2-phenoxyethanol, 3,6,9-trioxaundecane, 3-chloropropanol, 3-heptanol, 3-methyl-2-butanone, 3-methylbutyl acetate, 4-methylpentanoic acid, 4-oxa-2,6-heptandiol, N,N-diethylformamide, N,N-dipropylaniline, N-(2-aminoethyl)ethane-1,2-diamine, a-methylbenzyldimethylamine, benzene, dibenzyl ether, dibutyl carbonate, dibutyl hydrogen phosphite, diethyl ether, diethylene glycol dibutyl ether, dihexyl ether, diisopropylamine, dipentylamine, ethanol, ethyl (E)-3-phenylprop-2-enoate, ethyl benzoate, ethyl chloroacetate, ethyl phenylacetate, heptyl acetate, trichloromethane, triethyl phosphate, triethylene glycol, triethylenetetramine
ISOMERS OF TBP
tri-tert-butyl phosphate
tributyl phosphate
triisobutyl phosphate
SYNONYMS OF TBP
Tributyl phosphate
Tri-n-butyl phosphate
Butyl phosphate
Phosphoric acid tri-n-butyl ester
Tributylphosphate
Phosphoric acid tributyl ester
Tributyl ester of phosphoric acid
Butyl phosphate
Calloway 6814
Celluphos 4
Disflamoll TB
fosfato de tributilo
NSC 8484
Phosphate de tributyle
Phosphoric acid, tributyl ester
Tributoxyphosphine oxide
Tributylphosphat
TRIBUTYLPHOSPHATE
TRI-N-BUTYL PHOSPHATE
BRN 1710584
Butyl phosphate,
Butyl phosphate, tri-
EINECS 204-800-2
Tri-N-butylphosphate
Tributilfosfato
Tributylfosfaat
Tributylfosfat
UNII-95UAS8YAF5
Phosphoric acid tri-n-butyl ester
TBP
Tributyle (phosphate de)
phosphoric acid tributyl ester
1238174-19-0
15158-85-7
19824-61-4
329184-61-4
80094-39-9
ADDITIONAL INFORMATION ON Tributyl phosphate
-NUCLEAR CHEMISTRY
A 15–40% (usually about 30%) solution of tributyl phosphate in kerosene or dodecane is used in the liquid–liquid extraction (solvent extraction) of uranium, plutonium, and thorium from spent uranium nuclear fuel rods dissolved in nitric acid, as part of a nuclear reprocessing process known as PUREX.
The shipment of 20 tons of tributyl phosphate to North Korea from China in 2002, coinciding with the resumption of activity at Yongbyon Nuclear Scientific Research Center, was seen by the United States and the International Atomic Energy Agency as cause for concern;
that amount was considered sufficient to extract enough material for perhaps three to five potential nuclear weapons.
-Separation of Tributyl phosphate on Newcrom R1 HPLC column
Tributyl phosphate can be analyzed by this reverse phase (RP) HPLC method with simple conditions. The mobile phase contains an acetonitrile (MeCN), water, and phosphoric acid. For Mass-Spec (MS) compatible applications the phosphoric acid needs to be replaced with formic acid. Smaller 3 µm particles columns available for fast UPLC applications. This liquid chromatography method is scalable and can be used for isolation impurities in preparative separation. It also suitable for pharmacokinetics.
-Based on product type, the Tributyl Phosphate market is segmented into:
Purity:98%
Purity:90%
-Based on application, the critical market of TBP is segmented into:
Extractant
Solvent
Defoaming Agent
Others
