Diisopropyl phosphite
- CAS No.
- 1809-20-7
- Chemical Name:
- Diisopropyl phosphite
- Synonyms
- DIISOPROPYL PHOSPHONATE;Diisopropylphosphine oxide;Phosphonic acid, bis(1-methylethyl) ester;3P-230;(iPrO)2P(O)H;O,O-DiisopropyL;isopropylphosphonate;DI-I-PROPYLPHOSPHITE;Diisopropyl phosphit;Isopropyl phosphonate
- CBNumber:
- CB5671052
- Molecular Formula:
- C6H15O3P
- Molecular Weight:
- 166.16
- MDL Number:
- MFCD00117905
- MOL File:
- 1809-20-7.mol
- MSDS File:
- SDS
| Boiling point | 71 °C (8 mmHg) |
|---|---|
| Density | 0.997 |
| refractive index | 1.4065-1.4085 |
| Flash point | 69°C |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | Chloroform (Sparingly), Methanol (Sparingly) |
| form | Liquid |
| Specific Gravity | 1 |
| color | Clear colorless |
| Water Solubility | soluble |
| Sensitive | Moisture Sensitive |
| InChI | InChI=1S/C6H15O3P/c1-5(2)8-10(7)9-6(3)4/h5-6,10H,1-4H3 |
| InChIKey | BLKXLEPPVDUHBY-UHFFFAOYSA-N |
| SMILES | P(=O)(OC(C)C)OC(C)C |
| CAS DataBase Reference | 1809-20-7(CAS DataBase Reference) |
| FDA UNII | 676G4RQ6ND |
| NIST Chemistry Reference | Phosphonic acid, di-isopropyl ester(1809-20-7) |
| EPA Substance Registry System | Phosphonic acid, bis(1-methylethyl) ester (1809-20-7) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302-H315-H319-H335 | |||||||||
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 36/37/38-22 | |||||||||
| Safety Statements | 37/39-26 | |||||||||
| RIDADR | 3265 | |||||||||
| RTECS | SZ7660000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29209085 | |||||||||
| Toxicity | guinea pig,LC50,inhalation,9010mg/m3 (9010mg/m3),LUNGS, THORAX, OR RESPIRATION: OTHER CHANGESGASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDSBEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD,Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 29(11), Pg. 51, 1985. | |||||||||
| NFPA 704 |
|
Diisopropyl phosphite price More Price(61)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| TCI Chemical | P0629 | Diisopropyl Phosphite >98.0%(GC) | 1809-20-7 | 25g | $29 | 2026-04-30 | Buy |
| TCI Chemical | P0629 | Diisopropyl Phosphite >98.0%(GC) | 1809-20-7 | 500g | $183 | 2026-04-30 | Buy |
| Strem Chemicals | 93-1527 | Di-i-propylphosphite, min. 98% min.98% | 1809-20-7 | 50g | $76 | 2026-04-30 | Buy |
| Strem Chemicals | 93-1527 | Di-i-propylphosphite, min. 98% min.98% | 1809-20-7 | 250g | $295 | 2026-04-30 | Buy |
| TRC | TRC-D459370-1G | Diisopropyl Phosphite | 1809-20-7 | 1g | $59 | 2026-06-03 | Buy |
Diisopropyl phosphite Chemical Properties, Uses, Production
Chemical Properties
clear colourless liquid, corrosive, soluble in organic solvents such as ethanol.
Uses
Diisopropyl phosphite is used as antiwear lubricant additive together with triphenyl thiophosphate on T8 steel/Al2O3 ceramics.
Preparation
Diisopropyl phosphite is prepared by directly reacting isopropanol with phosphorus trichloride.
3(CH3)2CHOH+PCl3→[(CH3)2CHO]2POH+2HCl↑+(CH3)2CHCl
At a ratio of 3:1 (mol), continuously feed 215kg/h of isopropanol and 150kg/h of phosphorus trichloride. When mixed, this results in a violent reaction that generates hydrogen chloride gas. This gas is quickly removed from the mixing pot using vacuum mercury. The crude ester produced is then heated in a falling film type spinner deacidification device and further deacidified. The resulting product is then cooled to below 40°C and obtained with a content of 92%-95% and a yield of 95%～98%.
Synthesis Reference(s)
Tetrahedron Letters, 29, p. 3327, 1988 DOI: 10.1016/0040-4039(88)85153-0
Diisopropyl phosphite Preparation Products And Raw materials
Raw materials
Preparation Products
1of2
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Nanjing Yihua Biotechnology Co., Ltd | 13429882898; 13429882898 | 1096323105@qq.com | China | 291 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TAIYUAN RHF CO.,LTD. | +86 351 7031519 | sales@RHFChem.com | China | 2334 | 56 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Beijing Ouhe Technology Co., Ltd | 13552068683 13522913783 | 2355560935@qq.com | China | 11777 | 60 |
| Accela ChemBio Co.,Ltd. | 021-50795510 4000665055 | marketing@accelachem.com | China | 10972 | 64 |
| Shanghai Longsheng chemical Co.,Ltd. | 58099637 13585536065 | sales@shlschem.com | China | 9880 | 59 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
View Latest Price from Diisopropyl phosphite manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-08-07 | Diisopropyl phosphite
1809-20-7
|
$1.00 | 1KG | 99% | 200000KG | Shaanxi Dideu Medichem Co. Ltd | |
 |
2026-06-30 | Diisopropyl phosphite
1809-20-7
|
1KG | 98.5% | 10000KGS | Shaanxi Dideu New Materials Co. Ltd | ||
 |
2025-04-04 | Diisopropyl phosphite
1809-20-7
|
1KG | 98% | 1ton | Henan Aochuang Chemical Co.,Ltd. |
-
- Diisopropyl phosphite
1809-20-7
- $1.00
- 99%
- Shaanxi Dideu Medichem Co. Ltd
-
- Diisopropyl phosphite
1809-20-7
- 98.5%
- Shaanxi Dideu New Materials Co. Ltd
-
- Diisopropyl phosphite
1809-20-7
- 98%
- Henan Aochuang Chemical Co.,Ltd.
