Homopiperazine
Also known as: 1,4-Diazepane, 1,4-Diazacycloheptane, Hexahydro-1H-1,4-diazepine, Hexahydro-1,4-diazepine, Perhydro-1,4-diazepine
Homopiperazine (CAS 505-66-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H12N2 and a molecular weight of 100.162 g/mol. Key properties include a melting point of 38-40 °C(lit.), a boiling point of 169.0±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 64.4±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H311 — Toxic in contact with skin and H314 — Causes severe skin burns and eye damage. It is listed by 2 suppliers, 1 of which publish reference prices, from 2.40 to 2,250.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 505-66-8
- Jingsj CID
- J-45310-3
- Molecular Formula
- C5H12N2
- Molecular Weight
- 100.162 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | 98% 500g | ¥1,201.00 | $0.36 /gBest ¥2.40/g CNY | CN China MOQ 500g | |
In Stock | 98% 100g | ¥252.00 | $0.38 /g ¥2.52/g CNY | CN China MOQ 100g | |
In Stock | 98% 1kg | ¥2,250.00 | $336.7 /kg ¥2,250.00/kg CNY | CN China MOQ 1kg |
Physicochemical Properties
| Melting Point | 38-40 °C(lit.) |
|---|---|
| Boiling Point | 169.0±8.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 64.4±0.0 °C |
| Exact Mass | 100.100044 |
| PSA | 24.06000 |
| LogP | -0.48 |
| Vapor Pressure | 1.6±0.3 mmHg at 25°C |
| Refractive Index | 1.425 |
GHS Safety & Compliance
- H311 — Toxic in contact with skin
- H314 — Causes severe skin burns and eye damage
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 Homopiperazine?
The CAS number of Homopiperazine is 505-66-8.
What are the molecular formula and molecular weight of Homopiperazine?
Homopiperazine has molecular formula C5H12N2 and molecular weight 100.162 g/mol.
Which suppliers offer Homopiperazine?
2 supplier(s) listed; reference unit price ¥2.40–2250.00 /g.
Is Homopiperazine hazardous?
Homopiperazine has GHS signal word Danger and hazard statements H311 — Toxic in contact with skin; H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of Homopiperazine?
For Homopiperazine, Upstream Products: 1,3-Diaminopropane, N-(2-Hydroxyethyl)-1,3-propanediamine, 1H-1,4-Diazepine, hexahydro-1,4-bis(phenylsulfonyl)-; Downstream Products: 2-(1,4-Diazepan-1-yl)ethanol, 1-Ethyl-1,4-diazepane, 1-[5-(Trifluoromethyl)pyridin-2-yl]-1,4-diazepane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Homopiperazine (CAS 505-66-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45310-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.