TRIBUTYL CITRATE

Citric acid, tributyl ester Citroflex 4 TBC tri- -butyl citrate tributyl 2-hydroxy-l,2,3-propanetricarboxylate. 

Solubility miscible with acetone, ethanol, and vegetable oil  

Tributyl citrate should be stored in well-closed containers in a cool, dry location at temperatures not exceeding 38°C. When stored in accordance with these conditions, tributyl citrate is a stable material. 

Tributyl citrate is incompatible with strong alkalis and oxidizing materials. 

Tributyl citrate is prepared by the esterification of citric acid with butanol. 

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Esters. The significant esters of citric acid are trimethyl citrate, triethyl citrate, tributyl citrate, and acetylated triethyl- and tributyl citrate. Many other esters are available but have not been used on a commercial scale. Citric acid esters are made under azeotropic conditions with a solvent, a catalyst, and the appropriate alcohol. 

The polysulfide base material contains 50—80% of the polyfunctional mercaptan, which is a clear, amber, sympy Hquid polymer with a viscosity at 25°C of 35, 000 Pa-s(= cP), an average mol wt of 4000, a pH range of 6—8, and a ntild, characteristic mercaptan odor. Fillers are added to extend, reinforce, harden, and color the base. They may iaclude siUca, calcium sulfate, ziac oxide, ziac sulfide [1314-98-3] alumina, titanium dioxide [13463-67-7] and calcium carbonate. The high shear strength of the Hquid polymer makes the compositions difficult to mix. The addition of limited amounts of diluents improves the mix without reduciag the set-mbber characteristics unduly, eg, dibutyl phthalate [84-74-2], tricresyl phosphate [1330-78-5], and tributyl citrate [77-94-1]. 

Ljungberg, N., Andersson, T. and Wesslen, B. 2003. Film extrusion and film weldability of polyjlactic add) plasticized with triacetine and tributyl citrate. Journal of Applied Polymer Science 88 3239-3247. 

Concern over the migration of plasticisers from packaging materials has led to various studies, amongst which monitoring levels of various phthalates from coatings of regenerated cellulose film [433] and of acetyl-tributyl citrate (ATBC) from vinylidene chloride/vinyl... 

A ruling has been passed by the European Commission s scientific committee on toxicity, ecotoxicity and the environment, (the CSTEE), that the use of acetyl tributyl citrate as a plasticiser in children s toys is safe. It has also ruled that the current risk assessment models are reliable. Brief details are given in this little article. 

ACETIC ACID, 21 96 242 ACETONITRILE, 278 364 ACETYL TRIBUTYL CITRATE, 37... 

Samples. CDC-treated nickel-plated steel sheets (nickel coating weight of 600 mg/m and chromium coating weight of 6 mg/m ) were oiled with about 5 mg/m of dioctyl sebacate (DOS) or acetyl tributyl citrate (ATBC) and were employed as original samples. 

Acetyl tributyl citrate (ATBC), effect on adhesion of UV-oured lacquer, 163... 

Butanol, which at one time was an unwanted by-product in the preparation of acetone, is now the most important product of the fermentation. The building of a large new factory in Puerto Rico using 10,000 tons of molasses per annum for its production is an indication of this importance. Butanol is probably still the best solvent for cellulose nitrate lacquers. Dibutyl phthalate is certainly the most widely used plasticizer for synthetic resins, and butyl oleate, tributyl citrate and dibutyl tartrate have also been described as plasticizers. Another important use of butanol is as a source of butadiene, which serves as an intermediate in the conversion of sucrose into a synthetic rubber. Although in recent years other methods have been described for the preparation of butanol (for example, from ethyl alcohol and from acetylene), yet the fermentation of carbohydrates is still the cheapest process. 

Describes the estimation of RDX HMX by nonaqueous titrimetry analysis of HMX, Poly (2,2-dinitropropyl-a cry late, silica, and ethyl methyl 4,4-din itropentanoate in expls determination of PETN silica in LX-02-1 spectrophoto-metric detn of acetyl tributyl citrate in ex-trudable expl LX-02-1 analysis of a mixt of HMX, Viton oxamide analytical procedure for RDX in RX-05 analysis of tungsten HMX in RX-12 analysis of a mock expl 90010 analysis of a mock material for LX-0-4-1 and determination of cyanuric acid, melamine, and Viton in mixt LM-04-0... 

Cellulose acetate phthalate (CAP) dissolves at pH higher than 6 and is soluble in ketones, ethers, esters, and alcohols. Permeation of water vapor and gastric fluids is a concern but can be overcome by adding other materials such as shellac. Plasticizers that are used with CAP include diethyl phthalate, triacetin, tributyl citrate, and acetylated monoglyceride. 

TTP = Tritolyl phosphate TCXP = Tritolyl(xylenyl) phosphate TXP = Trixylenyl phosphate TDP = Tolyl diphenyl phosphate TEPP = Tri(ethylphenyl) phosphate TPP = Triphenyl phosphate TBC = Tributyl citrate BAR = Butyl acetyl ricinoleate MAR = Methyl acetyl ricinoleate... 

Other Plasticizers. Acetyl tributyl citrate is an outstanding nontoxic plasticizer for polyvinyl chloride in food packaging Plastisol formulations containing this ester have exceptional viscosity stability. Acetyl triethyl citrate is a good plasticizer for the cellulosics and acetyl trioctyl citrate shows promise with vmylidene chloride polymers. Other compounds of diverse nature find application as plasticizers. These include tetra-w-butyl thiodisuceinate, camphor, o-nitrobiphenyl and partially hydrogenated isomeric terphenyls... 

Optionally, 2 to 3 drops of tributyl citrate may also be added to reduce foaming. 

Citric acid (melting point 153°C, density 1.665) is one of our most versatile organic acids and is used as an acidulant in carbonated beverages, jams, jellies, and other foodstuffs. Another large outlet is in the medicinal field, including the manufacture of citrates and effervescent salts. Industrially citric acid is used as an ion-sequestering agent buffer and in the form of acetyl tributyl citrate, as a plasticizer for vinyl resins. 

For many years, the plasticiser DINP has been the primary plasticiser used in PVC toys. However, it is claimed by some pressure groups that the phthalate plasticiser leaches from PVC and poses a potential health hazard to children. Toxicity is the major concern when seeking a replacement for DINP. Others are compatibility, processability, physical properties and cost. With respect to the processability and cost ratio, a table is presented for different plasticisers used in PVC toys. The use of acetyl tributyl citrate as a plasticiser in PVC is discussed. WESTERN EUROPE-GENERAL... 

For many years, di-2-ethyl hexyl phthalate has been the primary plasticiser for medical devices made of PVC, but there are concerns regarding its toxicity. The potential of a lesser used plasticiser, tributyl citrate, is examined. The properties of plasticised vinyl compositions were compared, including extraction, volatility, thermal stability, low temperature flexibility and mechanical properties. 12 refs. 

Vinylidene dichloride film Epoxidised soya bean oil Acetyl tributyl citrate... 

Phenethylamine Tributyl citrate Tri-isobutyl phosphate Trisbutoxyethyl phosphate Tryptamine... 

Triavil, 346, 866 Triazine herbicides, 79 Triazolam, 1038 Triazolophthalazine, 662 Tribiotic, 369 Tributyl citrate, 199 Trichlorbutanolum, 444 Trichlorethylene, 1040 Trichlormethiazide, 1039 Trichloro compounds, 27 test on stomach contents, 6 test on urine, 5... 

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