Dimethylphosphinic acid
Also known as: Phosphinic acid, dimethyl-, Phosphinic acid, P,P-dimethyl-, Hydroxydimethylphosphine oxide, Dimethylphosphinic acid (6CI,7CI,8CI,9CI)
Dimethylphosphinic acid (CAS 3283-12-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H7O2P and a molecular weight of 94.049 g/mol. Key properties include a melting point of 85-89ºC(lit.), a boiling point of 277.0±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 137.7±19.3 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3283-12-3
- Jingsj CID
- J-44128-1
- Molecular Formula
- C2H7O2P
- Molecular Weight
- 94.049 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 85-89ºC(lit.) |
|---|---|
| Boiling Point | 277.0±0.0 °C at 760 mmHg |
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 137.7±19.3 °C |
| Exact Mass | 94.018364 |
| PSA | 47.11000 |
| LogP | -0.38 |
| Appearance | solid |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.390 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2915900090 |
|---|---|
| Summary | 2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Dimethylphosphinic acid?
The CAS number of Dimethylphosphinic acid is 3283-12-3.
What are the molecular formula and molecular weight of Dimethylphosphinic acid?
Dimethylphosphinic acid has molecular formula C2H7O2P and molecular weight 94.049 g/mol.
Is Dimethylphosphinic acid hazardous?
Dimethylphosphinic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Dimethylphosphinic acid (CAS 3283-12-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44128-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.