Trimethyl phosphite CAS#: 121-45-9; ChemWhat Code: 32821
Names & Identifiers |
| Product Name | Trimethyl phosphite |
| Synonyms | PHOSPHOROUS ACID TRIMETHYL ESTER;TRIMETHYL PHOSPHONATE;TRIMETHYL PHOSPHITE;fosforyntrojmetylowy;Methyl phosphite ((MeO)3P);P(OCH3)3;Phosphonousacidtrimethylester;Trimethoxyfosfin |
| CAS Registry Number | 121-45-9 |
| Molecular Formula | C3H9O3P |
| Molecular Weight | 124.08 |
| EINECS | 204-471-5 |
| Other Registry Numbers | ; |
| More Identifiers on PubChem | IUPA Names, InChI, InChI Key, Canonical SMILES, etc. |
![]() |
|
Chemical & Physical Properties |
| Melting point | −78 °C(lit.) |
| Boiling Point | 111-112 °C(lit.) |
| Density | 1.052 g/mL at 25 °C(lit.) |
| vapor Density | 4.3 (vs air) |
| vapor pressure | 17 mm Hg ( 20 °C) |
| Refractive Index | n |
| Flash Point | 82 °F |
| Storage | 2-8°C |
| form | Liquid |
| Color | Colorless |
| Explosive Limit | 5.2-61.2%(V) |
| Water Solubility | Hydrolyzes with water. |
| Sensitive | Air & Moisture Sensitive |
| More Properties From PubChem | Topological Polar Surface Area, Monoisotopic Mass, etc. |
| NIST Chemistry Reference | Phosphorous acid, trimethyl ester(121-45-9) |
| EPA Substance Registry System | Phosphorous acid, trimethyl ester(121-45-9) |
Safety & Hazards(Codes & Phrases) |
| Hazard Codes | Xn,T,F,Xi |
| R Phrase | 10-22-36/37/38-41-37/38-65-48/23/24/25-11-46-45-67-66-36 |
| S Phrase | 26-39-62-45-16-53 |
| RIDADR | UN 2329 3/PG 3 |
| WGK Germany | 1 |
| RTECS | TH1400000 |
| F | 10-13-21 |
| TSCA | Yes |
| Storage Class | 3 |
| Packing Group | III |
| Hazardous Substances Data | 121-45-9(Hazardous Substances Data) |
| More Safety & Hazards From PubChem | Signal, GHS Hazard Statements, Precautionary Statement Codes, etc. |
Literature |
| Literature on PubChem | Synthesis References, Metabolite References, etc. |
Patents |
| Patents on PubChem | Related Patents Of This Product |
Transportation, Storage & Usage |
| Transportation | No Information |
| Storage | No Information |
| Usage | No Information |
Spectral Properties |
| No Information |
Buy Reagent | |
| No reagent supplier? | Send quick inquiry to ChemWhat |
| Want to be listed here as a reagent supplier? (Paid service) | Click here to contact ChemWhat |
Approved Manufacturers | |
| Want to be listed as an approved manufacturer (Requires approvement)? | Please download and fill out this form and send back to approved-manufacturers@chemwhat.com |
Other Suppliers | |
| Watson International Limited | Visit Watson Official Website |
Contact Us for Other Help | |
| Contact us for other information or services | Click here to contact ChemWhat |


