N,N'-Bis(salicylidene)-1,2-phenylenediamine
Also known as: N,N'-Bis(2-hydroxybenzylidene)-1,2-phenylenediamine, N,N'-Disalicylidene-o-phenylenediamine, N,N'-o-Phenylenebis(salicylaldimine), 2,2'-[1,2-Phenylenebis(nitrilomethylidyne)]bisphenol, Salophen, Salphen, Bis(salicylidene)-o-phenylenediamine, MFCD00009995
N,N'-Bis(salicylidene)-1,2-phenylenediamine (CAS 3946-91-6) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C20H16N2O2 and a molecular weight of 316.35300 g/mol. Key properties include a melting point of 163-165 °C(lit.), a boiling point of 523.1ºC at 760 mmHg, a density of 1.446 g/cm3 and a flash point of 187.9ºC. 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 3 suppliers, 2 of which publish reference prices, from 10.40 to 128.40 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 3946-91-6
- Jingsj CID
- J-933446-9
- Molecular Formula
- C20H16N2O2
- Molecular Weight
- 316.35300 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | 99% 100g | ¥1,040.00 | $1.56 /gBest ¥10.40/g CNY | CN China MOQ 100g | |
In Stock | >98.0%(GC) 25g | ¥2,016.00 | $12.07 /g ¥80.64/g CNY | CN China MOQ 25g | |
In Stock | >98.0%(GC) 5g | ¥642.00 | $19.21 /g ¥128.40/g CNY | CN China MOQ 5g |
Physicochemical Properties
| Melting Point | 163-165 °C(lit.) |
|---|---|
| Boiling Point | 523.1ºC at 760 mmHg |
| Density | 1.446 g/cm3 |
| Flash Point | 187.9ºC |
| Exact Mass | 316.12100 |
| PSA | 65.18000 |
| LogP | 4.59900 |
| Refractive Index | 1.612 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2925290090 |
|---|---|
| Summary | 2925290090 other imines and their derivatives; salts thereof。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of N,N'-Bis(salicylidene)-1,2-phenylenediamine?
The CAS number of N,N'-Bis(salicylidene)-1,2-phenylenediamine is 3946-91-6.
What are the molecular formula and molecular weight of N,N'-Bis(salicylidene)-1,2-phenylenediamine?
N,N'-Bis(salicylidene)-1,2-phenylenediamine has molecular formula C20H16N2O2 and molecular weight 316.35300 g/mol.
Which suppliers offer N,N'-Bis(salicylidene)-1,2-phenylenediamine?
3 supplier(s) listed; reference unit price ¥10.40–128.40 /g.
Is N,N'-Bis(salicylidene)-1,2-phenylenediamine hazardous?
N,N'-Bis(salicylidene)-1,2-phenylenediamine 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. "N,N'-Bis(salicylidene)-1,2-phenylenediamine (CAS 3946-91-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-933446-9 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.