1660-95-3
Tetraisopropyl methylenediphosphonate
CAS: 1660-95-3
Molecular Formula: C13H30O6P2
1660-95-3 - Names and Identifiers
| Name | Tetraisopropyl methylenediphosphonate |
| Synonyms | tetra-i-Propylmethylenediphosphonate Tetraisopropylmethylenediphosphonate TETRAISOPROPYL METHYLENEDIPHOSPHONATE Tetraisopropyl methylenediphosphonate Tetraisopropyl methylenebisphosphonate TETRAISOPROPYL(METHYLENE)BISPHOSPHONATE tetrapropan-2-yl methanediylbis(phosphonate) Methanediphosphonic acid tetraisopropyl ester METHYLENEDIPHOSPHONIC ACID TETRAISOPROPYL ESTER Phosphonic acid, methylenedi-, tetraisopropyl ester phosphonicacid,methylenebis-,tetrakis(1-methylethyl)ester Phosphonic acid, methylenebis-, tetrakis(1-methylethyl) ester Phosphonic acid, P,P'-methylenebis-, P,P,P',P'-tetrakis(1-methylethyl) ester |
| CAS | 1660-95-3 |
| EINECS | 216-765-0 |
| InChI | InChI=1/C13H30O6P2/c1-10(2)16-20(14,17-11(3)4)9-21(15,18-12(5)6)19-13(7)8/h10-13H,9H2,1-8H3 |
| InChIKey | FKHXXJRKGVDPQP-UHFFFAOYSA-N |
1660-95-3 - Physico-chemical Properties
| Molecular Formula | C13H30O6P2 |
| Molar Mass | 344.32 |
| Density | 1.08 g/mL at 25 °C (lit.) |
| Boling Point | 155 °C/0.5 mmHg (lit.) |
| Flash Point | 320°F |
| Water Solubility | Insoluble in water. |
| Solubility | Chloroform (Slightly), Methanol (Slightly) |
| Vapor Presure | 0.017Pa at 20℃ |
| Appearance | Colorless liquid |
| Specific Gravity | 1.080 |
| Color | Clear Colourless to Yellow |
| BRN | 1080180 |
| Storage Condition | -20°C |
| Refractive Index | n20/D 1.431(lit.) |
| MDL | MFCD00015021 |
1660-95-3 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 41 - Risk of serious damage to eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S39 - Wear eye / face protection. |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29319090 |
1660-95-3 - Reference Information
| LogP | 1.3 at 20℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Application | Tetraisopropyl methylene diphosphate is an organic intermediate that can be prepared by one-step reaction of diisopropyl phosphite and carbon disulfide. It is reported that tetramethylene diphosphate can be used to prepare high flame retardant cable sheavers. |
| Preparation | Diisopropyl phosphite (4mL,24mmol) was added dropwise to a suspension of NaH(28.8mmol,1.2 equivalents) in dry THF(25mL) under nitrogen at -5°C to 0°C. Then, the mixture was stirred at 20°C for 3h, and carbon disulfide (9.6mmol,0.4 equivalent) was added dropwise. The color of the reaction mixture changed to brown. Stirring continued for 3 hours, then the mixture was poured into NH4Cl saturated solution and extracted with Et2O. The combined organic layer of (MgSO4) was dried, the solvent was removed under reduced pressure, and the product was purified by vacuum distillation (110-115°C, at 3.10-2 mbar) to obtain the compound tetramethylene diphosphate Tetraisopropyl ester, which is a light yellow oil (52%). |
Last Update：2024-04-09 02:00:07
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