Potassium tetraborate tetrahydrate

四硼酸钾四水合物

Also known as: Potassium biborate, Potassium borate (tetra), Potassium tetraborate 4H2O, Potassium tetraborate tetrahydrate, 99.5%, Potassiumborate4H2O, Potassiumtetraboratetetrahydrate,99+%, KB4(potasium tetraborate), POTASSIUM TETRABORATE TETRAHYDRATE*SIGMA ULTRA, POTASSIUMBORATE,GRANULAR, undecapotassium,tetraborate,tetrahydrate

Potassium tetraborate tetrahydrate (CAS 12045-78-2) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula B4H9K2O11 and a molecular weight of 306.50500 g/mol. It is also known as Potassium biborate, Potassium borate (tetra) and Potassium tetraborate 4H2O. Key properties include a melting point of 850ºC and a density of 1.74 g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
12045-78-2
Jingsj CID
J-48725-6
Molecular Formula
B4H9K2O11
Chinese Name
四硼酸钾四水合物
Molecular Weight
306.50500 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point850ºC
Density1.74 g/cm3

GHS Safety & Compliance

Health HazardSignal word: Warning

Frequently Asked Questions

What is the CAS number of Potassium tetraborate tetrahydrate?

The CAS number of Potassium tetraborate tetrahydrate is 12045-78-2.

What are the molecular formula and molecular weight of Potassium tetraborate tetrahydrate?

Potassium tetraborate tetrahydrate has molecular formula B4H9K2O11 and molecular weight 306.50500 g/mol.

Is Potassium tetraborate tetrahydrate hazardous?

Potassium tetraborate tetrahydrate has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "Potassium tetraborate tetrahydrate (CAS 12045-78-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48725-6 (accessed 2026-10-24).

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