Molekula
Dimethyl phosphite, 99%
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Dimethyl phosphite (CAS 868-85-9) is a phosphorus-containing organic compound used primarily as a reagent in organic synthesis, a flame retardant, and an intermediate for pesticides and pharmaceuticals. It appears as a colorless to pale yellow liquid with a characteristic odor. This high-purity (99%) chemical has the molecular formula C2H7O3P and a molecular weight of 110.05 g/mol. Store at ambient conditions in a well-ventilated area, away from oxidizing agents and heat. The product carries a **Warning** signal word under GHS classification. Molekula supplies dimethyl phosphite from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
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Specifications
| Property | Value |
|---|---|
| Appearance | Colourless/transparent liquid |
| Assay | ≥98.0% |
| Methanol | ≤ 0.6% |
| DMPI Content | ≥99.0% |
| MMPI | ≤ 0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 70 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Mobile, colorless liquid |
| Odour | Mild odor |
| Melting Point | 29 °C |
| Boiling Point | 171 °C |
| Density | 1.2 (relative, water = 1) |
| Solubility (other solvents) | Soluble in water; miscible with most organic solvents |
| Vapour Pressure | 0.135 kPa at 20 °C |
| Refractive Index | 1.4036 |
Source: PubChem CID 13361 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90030396 |
| CAS Number | 868-85-9 |
| IUPAC Name | methoxyphosphonoyloxymethane |
| Molecular Formula | C2H7O3P |
| Molecular Weight | 110.05 |
| Exact Mass | 110.0133 |
| SMILES | COP(=O)OC |
| InChIKey | HZCDANOFLILNSA-UHFFFAOYSA-N |
| InChI | InChI=1S/C2H7O3P/c1-4-6(3)5-2/h6H,1-2H3 |
| PubChem CID | 13361 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2920.21.0000 |
| Tariff Code | 2920210000 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
Hazard statements
- H227 Combustible liquid
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H341 Suspected of causing genetic defects
- H351 Suspected of causing cancer
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P201 Obtain special instructions before use
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Bis(hydroxymethyl)phosphine oxide
- Dimethoxyphosphine oxide
- Dimethyl acid phosphite
- Dimethyl hydrogen phosphite
- Dimethyl hydrogen phosphonate
- Dimethyl phosphonate
- Dimethylester kyselini fosforite
- Dimethylester kyseliny fosforite
- Dimethylfosfit
- Dimethylfosfonat
Frequently asked questions
What is dimethyl phosphite primarily used for?
Dimethyl phosphite is commonly used as a reagent in organic synthesis, particularly in the preparation of phosphonates, flame retardants, and as a ligand in catalysis.
What is the chemical formula and molecular weight of dimethyl phosphite?
The chemical formula is **C₂H₇O₃P**, and the molecular weight is **110.05 g/mol**.
How should dimethyl phosphite be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture, heat, and incompatible substances.
What purity grade is available for dimethyl phosphite from Molekula?
Molekula supplies dimethyl phosphite at **99% purity**.
Can Molekula supply dimethyl phosphite in bulk quantities?
Yes, Molekula can provide dimethyl phosphite in bulk, with quantities tailored to your requirements—please contact us for specific details.
What documentation comes with an order of dimethyl phosphite?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.