1,10-Phenanthroline
Also known as: 1,10-Phenanthroline anhydrate, 1,10-o-Phenanthroline, 4,5-Diazaphenanthrene, 4,5-Phenanthroline, Activ-8 in hexylene glycol, O-PHENANTHROLINE, ORTHOPHENANTHROLINE, beta-Phenanthroline, o-Phenanthroline, phenanthroline, β-Phenanthroline
1,10-Phenanthroline (CAS 66-71-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H8N2 and a molecular weight of 180.205 g/mol. Key properties include a melting point of 114-117 °C(lit.), a boiling point of 365.1±15.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 164.8±11.7 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed and H410 — Very toxic to aquatic life with long lasting effects. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 66-71-7
- Jingsj CID
- J-1106729-1
- Molecular Formula
- C12H8N2
- Molecular Weight
- 180.205 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 114-117 °C(lit.) |
|---|---|
| Boiling Point | 365.1±15.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 164.8±11.7 °C |
| Exact Mass | 180.068741 |
| PSA | 25.78000 |
| LogP | 1.78 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.740 |
| Stability | Stable. Hygroscopic. Store under nitrogen. Incompatible with strong acids, strong oxidizing agents. |
| Additional Property | slightly soluble |
GHS Safety & Compliance
- H301 — Toxic if swallowed
- H410 — Very toxic to aquatic life with long lasting effects
Activity & Biological Data
| Additional Information | [1]. Guan NanMu, et al. Synergistic inhibition between o-phenanthroline and chloride ion on cold rolled steel corrosion in phosphoric acid. Materials Chemistry and Physics Volume 86, Issue 1, 15 July 2004, Pages 59-68. |
|---|
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1,10-Phenanthroline?
The CAS number of 1,10-Phenanthroline is 66-71-7.
What are the molecular formula and molecular weight of 1,10-Phenanthroline?
1,10-Phenanthroline has molecular formula C12H8N2 and molecular weight 180.205 g/mol.
Which suppliers offer 1,10-Phenanthroline?
1 supplier(s) listed; request a quote for pricing.
Is 1,10-Phenanthroline hazardous?
1,10-Phenanthroline has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H410 — Very toxic to aquatic life with long lasting effects.
What are the upstream and downstream products of 1,10-Phenanthroline?
For 1,10-Phenanthroline, Upstream Products: Disodium succinate, 5,6-Epoxy-5,6-dihydro-1,10-phenanthroline, Tetramethyltin; Downstream Products: 6-Fluoro-2-methyl-1H-indole, 4-[Bis(4-methylphenyl)amino]benzaldehyde, 5-Amino-1,10-phenanthroline.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,10-Phenanthroline (CAS 66-71-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1106729-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.