Product Name

  • Name

    DIETHYLPHOSPHATOETHYLTRIETHOXYSILANE

  • EINECS
  • CAS No. 757-44-8
  • Article Data4
  • CAS DataBase
  • Density 1.031
  • Solubility
  • Melting Point <0°C
  • Formula C12H29 O6 P Si
  • Boiling Point 141 °C (2 mmHg)
  • Molecular Weight 328.418
  • Flash Point 70°C
  • Transport Information
  • Appearance
  • Safety Mildly toxic by ingestion. When heated to decomposition it emits toxic vapors of POx.
  • Risk Codes R36/37/38
  • Molecular Structure Molecular Structure of 757-44-8 (DIETHYLPHOSPHATOETHYLTRIETHOXYSILANE)
  • Hazard Symbols Xi
  • Synonyms Phosphonicacid, [2-(triethoxysilyl)ethyl]-, diethyl ester (6CI,7CI,8CI,9CI);Diethoxyphosphorylethyltriethoxysilane; Diethyl[2-(triethoxysilyl)ethane]phosphonate; Diethyl [b-(triethoxysilyl)ethyl]phosphonate
  • PSA 73.03000
  • LogP 3.30090

Synthetic route

Triethoxyvinylsilane
78-08-0

Triethoxyvinylsilane

phosphonic acid diethyl ester
762-04-9

phosphonic acid diethyl ester

diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile) at 120℃; for 1h;38%
With di-tert-butyl peroxide
With di-tert-butyl peroxide
2-chloroethyltriethoxysilane
18279-67-9

2-chloroethyltriethoxysilane

triethyl phosphite
122-52-1

triethyl phosphite

diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

dihydroxyphosphorylethyltrihydroxysilane

dihydroxyphosphorylethyltrihydroxysilane

Conditions
ConditionsYield
With hydrogenchloride at 90℃; for 24h;100%
diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

C6H14F4O3PSi(1-)*H3N*H(1+)

C6H14F4O3PSi(1-)*H3N*H(1+)

Conditions
ConditionsYield
With ammonium hydrogen difluoride In water at 20℃;99%
18-crown-6 ether
17455-13-9

18-crown-6 ether

diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

C48H112O36P8Si8*F(1-)*C12H24KO6(1+)

C48H112O36P8Si8*F(1-)*C12H24KO6(1+)

Conditions
ConditionsYield
Stage #1: 18-crown-6 ether With potassium fluoride In toluene; acetonitrile at 20℃; for 0.25h; Inert atmosphere;
Stage #2: diethyl [2-(triethoxysilyl)ethyl]phosphonate In water; toluene; acetonitrile at 20℃; Inert atmosphere;		89%
diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

tetrabutyl ammonium fluoride
429-41-4

tetrabutyl ammonium fluoride

tetra-n-butylammonium octakis(diethylphosphatoethyl)octasilsesquioxane fluoride
1393730-74-9

tetra-n-butylammonium octakis(diethylphosphatoethyl)octasilsesquioxane fluoride

Conditions
ConditionsYield
In tetrahydrofuran; water; toluene at 25℃; for 16h; Solvent; Inert atmosphere;82%
diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

C6H14F4O3PSi(1-)*K(1+)

C6H14F4O3PSi(1-)*K(1+)

Conditions
ConditionsYield
With potassium hydrogen bifluoride In water; acetone at 20℃; for 0.166667h;77%
diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

diethyl [2-(trifluorosilyl)ethyl]phosphonate

diethyl [2-(trifluorosilyl)ethyl]phosphonate

Conditions
ConditionsYield
With boron trifluoride diethyl etherate Heating;44.4%
triisopropanolamine
122-20-3

triisopropanolamine

diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

[2-(3,7,10-trimethyl-2,8,9-trioxa-5-aza-1-sila-bicyclo[3.3.3]undec-1-yl)-ethyl]-phosphonic acid diethyl ester
71682-51-4

[2-(3,7,10-trimethyl-2,8,9-trioxa-5-aza-1-sila-bicyclo[3.3.3]undec-1-yl)-ethyl]-phosphonic acid diethyl ester

Conditions
ConditionsYield
Irradiation;
tetraethoxy orthosilicate
78-10-4

tetraethoxy orthosilicate

diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

Polymer, co-polymerisation by sol-gel method Monomer(s): (EtO)4Si, 4; (EtO)3Si(CH2)2PO(OEt)2, 1

Polymer, co-polymerisation by sol-gel method Monomer(s): (EtO)4Si, 4; (EtO)3Si(CH2)2PO(OEt)2, 1

Conditions
ConditionsYield
With hydrogenchloride In ethanol for 24h;
tetraethoxy orthosilicate
78-10-4

tetraethoxy orthosilicate

diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

Polymer, co-polymerisation by sol-gel method Monomer(s): (EtO)4Si, 10; (EtO)3Si(CH2)2PO(OEt)2, 1

Polymer, co-polymerisation by sol-gel method Monomer(s): (EtO)4Si, 10; (EtO)3Si(CH2)2PO(OEt)2, 1

Conditions
ConditionsYield
With hydrogenchloride In ethanol for 24h;
diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

1,4-bis(triethoxysilyl)benzene
2615-18-1

1,4-bis(triethoxysilyl)benzene

Polymer, co-polymerisation by sol-gel method Monomer(s): (EtO)3Si(CH2)2PO(OEt)2, 1; 1,4-bis(triethoxysilyl)benzene; 4

Polymer, co-polymerisation by sol-gel method Monomer(s): (EtO)3Si(CH2)2PO(OEt)2, 1; 1,4-bis(triethoxysilyl)benzene; 4

Conditions
ConditionsYield
With hydrogenchloride In tetrahydrofuran for 24h;
diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

diethoxyphosphorylethyltrihydroxysilane

diethoxyphosphorylethyltrihydroxysilane

Conditions
ConditionsYield
With hydrogenchloride In ethanol at 25℃;
Methyltrimethoxysilan
1185-55-3

Methyltrimethoxysilan

Hexamethyldisiloxane
107-46-0

Hexamethyldisiloxane

diethyl [2-(triethoxysilyl)ethyl]phosphonate
757-44-8

diethyl [2-(triethoxysilyl)ethyl]phosphonate

n-hexyltrimethoxysilane
3069-19-0

n-hexyltrimethoxysilane

silsesquioxane
155881-77-9

silsesquioxane

Conditions
ConditionsYield
With formic acid; 1,1,1,3,3,3-hexamethyl-disilazane In hexane
...Expand

Diethyl (2-(triethoxysilyl)ethyl)phosphonate Chemical Properties

Molecular Formula: C12H29O6PSi
Molar mass: 328.41 g/mol
EINECS: 212-056-5
Index of Refraction: 1.428 
Density: 1.031 g/cm3
Flash Point: 159.1 °C
Enthalpy of Vaporization: 55.99 kJ/mol
Boiling Point: 339.5 °C at 760 mmHg
Vapour Pressure: 0.00018 mmHg at 25 °C
Melting point: <0 °C
Appearance: Clear colorless liquid
Structure of Diethyl (2-(triethoxysilyl)ethyl)phosphonate (CAS NO.757-44-8):
               

Diethyl (2-(triethoxysilyl)ethyl)phosphonate Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LD50 skin > 16mL/kg (16mL/kg)   Toxicology and Applied Pharmacology. Vol. 28, Pg. 313, 1974.
rat LD50 oral 17200uL/kg (17.2mL/kg)   Toxicology and Applied Pharmacology. Vol. 28, Pg. 313, 1974.

Carcinogenicity of Diethyl (2-(triethoxysilyl)ethyl)phosphonate (CAS NO.757-44-8) hasn't been listed as a carcinogen by NTP, IARC,ACGIH, or CA Prop 65. And its toxicological properties have not been fully investigated.You can see actual entry in RTECS for complete information.

Diethyl (2-(triethoxysilyl)ethyl)phosphonate Consensus Reports

Reported in EPA TSCA Inventory.

Diethyl (2-(triethoxysilyl)ethyl)phosphonate Safety Profile

Mildly toxic by ingestion. When heated to decomposition it emits toxic vapors of POx.
 

Hazard Codes: IrritantXi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 37/39-26 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39:Wear suitable gloves and eye/face protection.

Diethyl (2-(triethoxysilyl)ethyl)phosphonate Specification

 Diethyl (2-(triethoxysilyl)ethyl)phosphonate ,its cas register number is 757-44-8. It also can be called Phosphonic acid, P-(2-(triethoxysilyl)ethyl)-, diethyl ester or Phosphonic acid, (2-(triethoxysilyl)ethyl)-, diethyl ester . It is hazardous,so the first aid measures and others should be known. Such as: When on the skin: first,should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly,Get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While ,it's Inhaled: Remove from exposure and move to fresh air immediately.Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Wash mouth out with water,and get medical aid immediately.Notes to physician: Treat supportively and symptomatically.
In addition, Diethyl (2-(triethoxysilyl)ethyl)phosphonate (CAS NO.757-44-8) can be stable under normal temperature and pressure conditions.It is not compatible with strong oxidizing agents, and you must not take it with  incompatible materials. And also prevent it to broken down into hazardous decomposition products: carbon monoxide, oxides of phosphorus, carbon dioxide.

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