First, The Product Basic  Information.

Chinese Name:磷酸三乙酯,阻燃剂TEP

Triethylphosphate; Triethyl Phosphate;  Triethoxy Phosphate; Triethyl Phosphate, 98 +%; Triethyl Phosphate, 99 +%;  Triethyl Phosphate;Flame Retardant TEP,
English Name: Triethyl Phosphate, ETHYL  PHOSPHATE; ETHYL ACID PHOSPHATE; AURORA KA-1638; TEP; PHOSPHORIC ACID TRIETHYL  ESTER; TRIETHYL PHOSPHATE; (C2H5O) 3PO; Ethyl Phosphate (EtO)
CAS Number:  78-40-0
Molecular Formula: C6H15O4P
Molecular Weight: 182.15
EINECS  Number: 201-114-5
Traits: Colorless Transparent Liquid
Water%:  ≤0.20
Color (APHA): ≤ 20
Content (GC%): ≥99.5%
Acid Value (MgKOH / G):  ≤0.05
Specific Gravity (20 ° C / 4 ° C): 1.069-1.073
Refractive Index  (ND20): 1.4050-1.4070
Raw Materials: To Phosphorus Oxychloride And  Ethanol-Based, Two-Step Esterification Synthesis.
Triethyl Phosphate  Packaging: Net Weight 200KG / Galvanized Iron Drum (A Small Counter To Play With  16 Tons), 1000KG / IB Barrel (A Small Cabinet 18 Tons) or 23 Tons  ISOTANK.

Second, Product  Use
Triethyl Phosphate,Flame Retardant TEP Is A High Boiling Solvent, A  Plasticizer For Rubber And Plastics, And A Catalyst For The Preparation Of  Pesticide Insecticides For Use As An Ethylating Agent For Ketene  Production.
(1) Catalyst: Xylene Isomer Catalyst; Polymerization Catalyst For  Olefin; Catalyst For Producing Tetraethyl Lead; Catalyst For Producing  Carbodiimide; Substitution Reaction Catalyst For Trialkyl Boron And Olefin;  Dehydrogenation Of Acetic Acid To Produce Ethylene Ketone; Catalyst For The  Polymerization Of Styrene With Conjugated Diene Compounds; And The Use Of  Terephthalic Acid And Ethylene Glycol To Prevent Fiber Discoloration.
(2)  Solvent: Solvent Of Nitrocellulose And Cellulose Acetate; Solvent Used To  Maintain The Life Of The organic Peroxide Catalyst; Solvent For Dispersing  Ethylene Fluoride; Peroxide Agent For Curing Resin Of Polyester Resin And Epoxy  Resin And Thinner.
(3) Stabilizer: Chlorine-Based Insecticide And Stabilizer;  Stabilizer Of Phenolic Resin; Solid Agent Of Sugar Alcohol Resin.
(4)  Synthetic Resin: Curing Agent For Xylenol Formaldehyde Resin; Softening Agent  For Phenolic Resin Used In Shell Mold; Softener For Vinyl Chloride; Plasticizer  For Vinyl Acetate Polymer; Flame Retardant Of Polyester Resin Agent.
(5)  Triethyl Phosphate (Flame Retardant TEP) Is A High Boiling Point Solvent, Rubber  And Plastic Plasticizer, But Also For The Preparation Of Pesticide Pesticide Raw  Materials For Ethylation Reagents And Ketene Production. In Japan, 70% Of The  Product Is Used For The Catalyst.

Third, The  Production Process
(1) By The Phosphorus Trichloride, Ethanol And  Sodium Acetate Role In The Preparation
(1) The Preparation Of Diethyl  Chlorophosphate, Phosphorus Trichloride Mixed With Toluene, Stirring By Adding  Anhydrous Ethanol, Humidity Control At 30-40 ℃ After Adding To Continue Stirring  For 0.5h, The Reaction To Produce Diethyl Phosphite. Followed By The Dropwise  Addition Of Dichlorosulfonyl, The Humidity Control At 30-40 ° C Under Reduced  Pressure To Remove Excess Dichlorosulfonyl, The Residue Of Diethyl  Chlorophosphate.
(2) Preparation Of Triethyl Phosphate, Ethanol Solution Of  Sodium Ethoxide Was Added To The Reaction Kettle, And Diethyl Chlorophosphate  Was Added Dropwise Under Stirring. The Humidity Was Controlled Below 70 ° C, The  PH Was Adjusted To 7-8 With Sodium Ethoxide And Acetic Acid, Add After Stirring  4h. Then Add Cold Water, Stir Evenly After Adding Toluene, Continue Stirring For  Some Time, Standing Stratification, Extraction Of The Upper Oil, Dried With  Anhydrous Carbonic Acid, Filtered And Recovered Toluene, And Then Vacuum  Distillation, Collecting 72-88 ℃ / 0.4 -0.667MPa Of The Product, That Is, The  Finished Product.
(2) 100 ML (1.07 Mol) Of Phosphorus Oxychloride Was Charged  Into A 250 ML Four-Necked Flask Equipped With A Stirrer And Cooled With Ice  Brine To Less Than 15 ° C Then, 92 ML (1.60 Mol) Of Ethanol Was Added Dropwise  Under Vacuum. To Another 1000 ML Four-Necked Flask Equipped With A Stirrer, 550  ML (9.63 Mol) Of Ethanol Was Added And The Product Was Added Dropwise Under  Normal Pressure And Cooled With Ice-Salt Water To Ensure That The Reaction  Humidity Was Less Than 15 ° C. The Reaction Mixture Was Heated At 0.098 MPa  Ethanol Recovery. Control The Distillation Humidity Less Than 55 ° C The  Recovered Ethanol Was Applied To Esterification 2, And The Remaining Product Was  Neutralized With A Liquid Base To Give A PH Of 6-7, Extracted And Distilled To  Obtain 165.05 G Of Finished Product. Process Parameters: Phosphorus Oxychloride:  Ethanol = 1: 9 (Mol), Reaction Humidity 15 ℃ Reaction Time 1.5h; Product Yield  Of About 82%.
(3) Preparation Of Diethyl Chlorophosphate Phosphorus  Trichloride Mixed With Toluene, Stirring By Adding Anhydrous Ethanol, The  Temperature Control At 30 ~ 40 ℃, After Adding To Continue Stirring For 0.5h,  The Reaction To Produce Diethyl Phosphite Ester. And Then Dropping  Dichloro-Sulfuryl Chloride, The Temperature Control At 35 ℃, Add Added After The Addition Of Ethanol And Stirring 1h, To Maintain The Temperature At 30 ~ 40 ℃,  Under Pressure To Remove The Excess Of Dichlorosyl Chloride, The Residue That Is  Chlorophosphate Diethyl Ester.
(4) Preparation Of Triethyl Phosphate Tep  Ethanol Sodium Alcohol Solution Was Added To The Reaction Kettle, And Diethyl  Phosphite Phosphate Was Added Dropwise Under Stirring. The Temperature Was  Controlled At 70 ° C or Lower, And The PH Was Adjusted To 7 ° C With Sodium  Ethoxide And Acetic Acid. 8, After Mixing 4h. And Then Adding Cold Water,  Stirring Evenly After Adding Toluene, Stirring For Some Time, Standing  Stratified, The Extraction Of The Upper Oil, Dried With Anhydrous Potassium  Carbonate, Filtered And Recovered Toluene, And Then Vacuum Distillation,  Collecting 72 ~ 88 ℃ / 0.4 ~ 0.0667MPa Of The Product, That Was  Finished.