3',3'',5',5''-Tetrabromophenolphthalein

四溴酚酞

Also known as: Tetrabromophenolphthalein, 3',3',5',5'-Tetrabromophenolphthalein, 3,3-Bis(3,5-dibromo-4-hydroxyphenyl)isobenzofuran-1(3H)-one, Phenolphthalein, 3',3'',5',5''-tetrabromo-

3',3'',5',5''-Tetrabromophenolphthalein (CAS 1301-20-8) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C20H10Br4O4 and a molecular weight of 633.90700 g/mol. It is also known as Tetrabromophenolphthalein, 3',3',5',5'-Tetrabromophenolphthalein and 3,3-Bis(3,5-dibromo-4-hydroxyphenyl)isobenzofuran-1(3H)-one. Key properties include a melting point of 278-279ºC (dec.)(lit.), a boiling point of 598.6ºC at 760mmHg, a density of 2.152g/cm3 and a flash point of 315.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1301-20-8
Jingsj CID: J-1507058-6
Molecular Formula: C₂₀H₁₀Br₄O₄
Chinese Name: 四溴酚酞
Molecular Weight: 633.90700 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	278-279ºC (dec.)(lit.)
Boiling Point	598.6ºC at 760mmHg
Density	2.152g/cm3
Flash Point	315.8ºC

Frequently Asked Questions

What is the CAS number of 3',3'',5',5''-Tetrabromophenolphthalein?

The CAS number of 3',3'',5',5''-Tetrabromophenolphthalein is 1301-20-8.

What are the molecular formula and molecular weight of 3',3'',5',5''-Tetrabromophenolphthalein?

3',3'',5',5''-Tetrabromophenolphthalein has molecular formula C20H10Br4O4 and molecular weight 633.90700 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "3',3'',5',5''-Tetrabromophenolphthalein (CAS 1301-20-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1507058-6 (accessed 2026-10-25).

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