2-(Triphenylphosphoranylidene)acetaldehyde
Also known as: (Formylmethylene)triphenylphosphorane, Triphenylphosphoranylideneacetaldehyde, 2-Oxoethylidenetriphenylphosphorane, Trippett's reagent, Triphenyl(2-oxoethylidene)phosphorane, Ph3P=CH-CHO
2-(Triphenylphosphoranylidene)acetaldehyde (CAS 2136-75-6) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C20H17OP and a molecular weight of 304.32 g/mol. Key properties include a melting point of 185-188 °C(lit.), a boiling point of 486.9±47.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 248.3±29.3 °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. It is listed by 1 supplier, from 76.00 to 76.00 CNY per 5g. Record last updated Aug 21, 2026.
- CAS No.
- 2136-75-6
- Jingsj CID
- J-43454-0
- Molecular Formula
- C20H17OP
- Molecular Weight
- 304.32 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | 98% 5g | ¥380.00 | $11.37 /gBest ¥76.00/g CNY | CN China MOQ 5g |
Physicochemical Properties
| Melting Point | 185-188 °C(lit.) |
|---|---|
| Boiling Point | 486.9±47.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 248.3±29.3 °C |
| Exact Mass | 304.101715 |
| PSA | 26.88000 |
| LogP | 3.80 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.615 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory 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 2-(Triphenylphosphoranylidene)acetaldehyde?
The CAS number of 2-(Triphenylphosphoranylidene)acetaldehyde is 2136-75-6.
What are the molecular formula and molecular weight of 2-(Triphenylphosphoranylidene)acetaldehyde?
2-(Triphenylphosphoranylidene)acetaldehyde has molecular formula C20H17OP and molecular weight 304.32 g/mol.
Which suppliers offer 2-(Triphenylphosphoranylidene)acetaldehyde?
1 supplier(s) listed; reference unit price ¥76.00–76.00 /g.
Is 2-(Triphenylphosphoranylidene)acetaldehyde hazardous?
2-(Triphenylphosphoranylidene)acetaldehyde has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 2-(Triphenylphosphoranylidene)acetaldehyde?
For 2-(Triphenylphosphoranylidene)acetaldehyde, Upstream Products: Methyltriphenylphosphonium bromide, Ethyl formate, Chloroacetaldehyde; Downstream Products: (2E,6Z)-2,6-Nonadienal, (E)-4-Nitrocinnamaldehyde, (2E)-2-Decenal.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-(Triphenylphosphoranylidene)acetaldehyde (CAS 2136-75-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-43454-0 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.