4,4'-Dipyridine hydrate

4,4'-联吡啶水合物

Also known as: 4,4'-Bipyridine hydrate, 4,4'-Dipyridine Hydrate, 4,4'-Dipyridyl hydrate, EINECS 209-036-3, MFCD00149416

4,4'-Dipyridine hydrate (CAS 123333-55-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H10N2O and a molecular weight of 174.19900 g/mol. It is also known as 4,4'-Bipyridine hydrate, 4,4'-Dipyridine Hydrate and 4,4'-Dipyridyl hydrate. Key properties include a melting point of 70-74 °C(lit.), a boiling point of 304.8 °C(lit.) and a flash point of 173.7ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 123333-55-1
Jingsj CID: J-33167-0
Molecular Formula: C₁₀H₁₀N₂O
Chinese Name: 4,4'-联吡啶水合物
Molecular Weight: 174.19900 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	70-74 °C(lit.)
Boiling Point	304.8 °C(lit.)
Flash Point	173.7ºC

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of 4,4'-Dipyridine hydrate?

The CAS number of 4,4'-Dipyridine hydrate is 123333-55-1.

What are the molecular formula and molecular weight of 4,4'-Dipyridine hydrate?

4,4'-Dipyridine hydrate has molecular formula C10H10N2O and molecular weight 174.19900 g/mol.

Is 4,4'-Dipyridine hydrate hazardous?

4,4'-Dipyridine hydrate has GHS signal word Danger.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4,4'-Dipyridine hydrate (CAS 123333-55-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33167-0 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.