Diethyl (2-methylallyl)phosphonate
Also known as: 3-diethoxyphosphoryl-2-methylprop-1-ene, Phosphonic acid, P-(2-methyl-2-propen-1-yl)-, diethyl ester
Diethyl (2-methylallyl)phosphonate (CAS 51533-70-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H17O3P and a molecular weight of 192.19300 g/mol. Key properties include a boiling point of 62ºC0.1 mm Hg(lit.), a density of 1.013 g/mL at 25ºC(lit.) and a flash point of >110.0 °C. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 51533-70-1
- Jingsj CID
- J-49894-2
- Molecular Formula
- C8H17O3P
- Molecular Weight
- 192.19300 g/mol
- Category
- Organic Acids
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 62ºC0.1 mm Hg(lit.) |
|---|---|
| Density | 1.013 g/mL at 25ºC(lit.) |
| Flash Point | >110.0 °C |
| Exact Mass | 192.09200 |
| PSA | 45.34000 |
| LogP | 2.82860 |
| Refractive Index | n20/D 1.4380(lit.) |
GHS Safety & Compliance
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Diethyl (2-methylallyl)phosphonate?
The CAS number of Diethyl (2-methylallyl)phosphonate is 51533-70-1.
What are the molecular formula and molecular weight of Diethyl (2-methylallyl)phosphonate?
Diethyl (2-methylallyl)phosphonate has molecular formula C8H17O3P and molecular weight 192.19300 g/mol.
Is Diethyl (2-methylallyl)phosphonate hazardous?
Diethyl (2-methylallyl)phosphonate has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of Diethyl (2-methylallyl)phosphonate?
For Diethyl (2-methylallyl)phosphonate, Upstream Products: Methallyl acetate, Triethyl phosphite, 3-Chloro-2-methyl-1-propene; Downstream Products: Diethyl (2-oxopropyl)phosphonate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Diethyl (2-methylallyl)phosphonate (CAS 51533-70-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49894-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.