Dimethyl phosphonate
Also known as: Dimethyl phosphite, Dimethyl hydrogen phosphite, Dimethyl hydrogen phosphonate, O,O-dimethyl phosphonate, Dimethoxyphosphine oxide, Dimethyl acid phosphite, dimethyl H-phosphonate, Phosphonic acid, dimethyl ester, dimethylacidphosphite, Dimethylfosfit, Dimethylfosfonat
Dimethyl phosphonate (CAS 868-85-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H7O3P and a molecular weight of 110.049 g/mol. Key properties include a boiling point of 170.5±0.0 °C at 760 mmHg, a density of 1.2 g/mL at 25 °C(lit.) and a flash point of 29.4±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H317 — May cause an allergic skin reaction, H341 — Suspected of causing genetic defects and H351 — Suspected of causing cancer. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 868-85-9
- Jingsj CID
- J-45008-8
- Molecular Formula
- C2H7O3P
- Molecular Weight
- 110.049 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 170.5±0.0 °C at 760 mmHg |
|---|---|
| Density | 1.2 g/mL at 25 °C(lit.) |
| Flash Point | 29.4±0.0 °C |
| Exact Mass | 110.013283 |
| PSA | 59.00000 |
| LogP | -1.31 |
| Vapor Pressure | 1.9±0.3 mmHg at 25°C |
| Refractive Index | n20/D 1.402(lit.) |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
- H341 — Suspected of causing genetic defects
- H351 — Suspected of causing cancer
- H412 — Harmful to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2920909090 |
|---|---|
| Summary | 2920909090 esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Dimethyl phosphonate?
The CAS number of Dimethyl phosphonate is 868-85-9.
What are the molecular formula and molecular weight of Dimethyl phosphonate?
Dimethyl phosphonate has molecular formula C2H7O3P and molecular weight 110.049 g/mol.
Is Dimethyl phosphonate hazardous?
Dimethyl phosphonate has GHS signal word Warning and hazard statements H317 — May cause an allergic skin reaction; H341 — Suspected of causing genetic defects; H351 — Suspected of causing cancer.
What are the upstream and downstream products of Dimethyl phosphonate?
For Dimethyl phosphonate, Upstream Products: Methanol, Trimethyl phosphite, Trimethyl orthoformate; Downstream Products: Dimethyl methylphosphonate, Trichlorfon, Dimethyl 2-acetoxyethylphosphonate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Dimethyl phosphonate (CAS 868-85-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45008-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.