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Flame retardants

Tetrabromophenolphthalein

Also known as 3',3'',5',5''-Tetrabromophenolphthalein, 1(3H)-Isobenzofuranone, 3,3-bis(3,5-dibromo-4-hydroxyphenyl)-, Phenolphthalein, 3',3'',5',5''-tetrabromo-

CAS 76-62-0Formula C20H10Br4O4Molar mass 633.91 g/molEC 200-974-9
GHS signal word: Warning. Pictograms: Harmful or irritant
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Tetrabromophenolphthalein chemical structure, C20H10Br4O4, CAS 76-62-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
76-62-0
Formula
C20H10Br4O4
Molar mass
633.91 g/mol
EC number
200-974-9
HS code
293220
Category
Flame retardants

What is Tetrabromophenolphthalein?

Plain description, key identifiers and synonyms

Tetrabromophenolphthalein is a chemical substance with the molecular formula C20H10Br4O4 and a molar mass of 633.91 g/mol. Its CAS registry number is 76-62-0. The IUPAC name is 3,3-bis(3,5-dibromo-4-hydroxyphenyl)-2-benzofuran-1-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3,3-bis(3,5-dibromo-4-hydroxyphenyl)-2-benzofuran-1-one
CAS number
76-62-0 CAS number cross-checkedOther or deprecated CAS: 1301-20-8
EC numbers
200-974-9, 624-058-7
Molecular formula
C20H10Br4O4
UNII
YZ4HT20I0V
MDL number
MFCD00005910
InChIKey
OBRGVMYQZVQHGO-UHFFFAOYSA-N
InChI
InChI=1S/C20H10Br4O4/c21-13-5-9(6-14(22)17(13)25)20(10-7-15(23)18(26)16(24)8-10)12-4-2-1-3-11(12)19(27)28-20/h1-8,25-26H
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C(=O)OC2(C3=CC(=C(C(=C3)Br)O)Br)C4=CC(=C(C(=C4)Br)O)Br

Synonyms

  • 3',3'',5',5''-Tetrabromophenolphthalein
  • 1(3H)-Isobenzofuranone, 3,3-bis(3,5-dibromo-4-hydroxyphenyl)-
  • Phenolphthalein, 3',3'',5',5''-tetrabromo-
  • 3,3-Bis(3,5-dibromo-4-hydroxyphenyl)isobenzofuran-1(3H)-one
  • 3,3-bis(3,5-dibromo-4-hydroxyphenyl)-2-benzofuran-1-one
  • Tetbrothalein
  • 3,3-bis(3,5-dibromo-4-hydroxyphenyl)-1,3-dihydro-2-benzofuran-1-one
  • 3' 3'' 5' 5''-Tetrabromophenolphthalein
  • 3/' 3/'/' 5/' 5/'/'-Tetrabromophenolphthalein
  • Phenol tetrabromophthalein
  • Phenolphthalein, tetrabromo-
  • 3,3-bis(3,5-dibromo-4-hydroxyphenyl)-3-hydroisobenzofuran-1-one
  • Tetrabromophenolphthalein (VAN)
  • 3,3-Bis(3,5-dibromo-4-hydroxyphenyl)phthalide
  • 3,3-Bis(3,5-dibromo-4-hydroxyphenyl)-1(3H)-isobenzofuranone
  • 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-, tetrabromo deriv.
  • 3',5',5''-Tetrabromophenolphthalein
  • 3',3',5',5'-Tetrabromophenolphthalein
  • Phenolphthalein,3'',5',5''-tetrabromo-
  • 3'',3'''',5'',5''''-tetrabromophenolphthalein
  • 3\',3\'\',5\',5\'\'-Tetrabromophenolphthalein
  • 3,3-bis(3,5-dibromo-4-hydroxy-phenyl)isobenzofuran-1-one
  • 1(3H)-Isobenzofuranone,3-bis(3,5-dibromo-4-hydroxyphenyl)-
  • 3,3-Bis(3,5-dibromo-4-hydroxyphenyl)-2-benzofuran-1(3H)-one
  • 3,3-Bis(3,5-dibromo-4-hydroxyphenyl)-2-benzofuran-1(3H)-one #

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
633.91 g/molcalc.
Exact mass
629.7313 Dacalc.
LogP (octanol/water)
6.61calc.
Topological polar surface area
66.76 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
2calc.
Heavy atoms
28calc.
Rings
4calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.05calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Fails (2 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1OC(c2ccccc2)(c2ccccc2)c2ccccc21

O=C1OC(c2ccccc2)(c2ccccc2)c2ccccc21

4 rings, 22 atoms, the RefChem:357140 ring system.

146 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
Precautionary statements (9)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Tetrabromophenolphthalein suppliers

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Tetrabromophenolphthalein price

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Tetrabromophenolphthalein is traded under.

HS 2932.20Indicative HS code

Lactones

World exports in 2024
$1.97B
−4.7% vs 2023, imports $2.07B
2019 to 2024
Top exporters
  1. China56.3%
  2. India * partner reported7.4%
  3. Germany7.3%
Top importers
  1. United States14.2%
  2. India * partner reported13.5%
  3. Brazil8.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Tetrabromophenolphthalein is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Tetrabromophenolphthalein, based on the data on this page

What is Tetrabromophenolphthalein?

Tetrabromophenolphthalein is a chemical substance with the molecular formula C20H10Br4O4 and a molar mass of 633.91 g/mol. Its CAS registry number is 76-62-0. The IUPAC name is 3,3-bis(3,5-dibromo-4-hydroxyphenyl)-2-benzofuran-1-one.

What is the CAS number of Tetrabromophenolphthalein?

The CAS registry number of Tetrabromophenolphthalein is 76-62-0. Other or deprecated CAS numbers: 1301-20-8.

What is the molecular formula and weight of Tetrabromophenolphthalein?

The molecular formula of Tetrabromophenolphthalein is C20H10Br4O4 and its molar mass is 633.91 g/mol.

Is Tetrabromophenolphthalein hazardous?

Tetrabromophenolphthalein carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Tetrabromophenolphthalein?

Tetrabromophenolphthalein is usually classified under HS code 293220 (Lactones). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Tetrabromophenolphthalein?

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What is the price of Tetrabromophenolphthalein?

Suppliers quote Tetrabromophenolphthalein on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Tetrabromophenolphthalein

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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