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Dimethyl phenylphosphonite

Also known as: Dimethoxyphenylphosphine, Dimethyl phenylphosphinite, Phenyldimethoxyphosphine, Phosphorus, dimethoxy phenyl, dimethoxy(phenyl)phosphane, phenylphosphonous acid dimethyl ester

Dimethyl phenylphosphonite (CAS 2946-61-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H11O2P and a molecular weight of 170.14600 g/mol. Key properties include a boiling point of 77-79°C 7mm, a density of 1.072 g/mL at 25 °C(lit.) and a flash point of >110.0 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
2946-61-4
Jingsj CID
J-30091-4
Molecular Formula
C8H11O2P
Molecular Weight
170.14600 g/mol
Category
Organic Acids
Last updated
11/3/2026

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Physicochemical Properties

Boiling Point77-79°C 7mm
Density1.072 g/mL at 25 °C(lit.)
Flash Point>110.0 °C
Exact Mass170.05000
PSA32.05000
LogP1.91660
Vapor Pressure0.628mmHg at 25°C
Refractive Indexn20/D 1.529(lit.)

GHS Safety & Compliance

CorrosionSignal word: Danger
  • H314 — Causes severe skin burns and eye damage

Customs & Trade Information

HS Code2931900090
Summary2931900090. 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 Dimethyl phenylphosphonite?

The CAS number of Dimethyl phenylphosphonite is 2946-61-4.

What are the molecular formula and molecular weight of Dimethyl phenylphosphonite?

Dimethyl phenylphosphonite has molecular formula C8H11O2P and molecular weight 170.14600 g/mol.

Is Dimethyl phenylphosphonite hazardous?

Dimethyl phenylphosphonite has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.

What are the upstream and downstream products of Dimethyl phenylphosphonite?

For Dimethyl phenylphosphonite, Upstream Products: Methanol, Dichlorophenylphosphine, Phenylphosphonic dichloride; Downstream Products: Methylphenylphosphinic acid, methylphenylphosphinic chloride, 2,2'-Bipyridine.

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 phenylphosphonite (CAS 2946-61-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30091-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.