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Benzophenone-9

Also known as Benzophenone 9, Uvinuc ds 49, Uvinul 3048

CAS 76656-36-5Formula C15H12Na2O11S2Molar mass 478.36 g/molEC 221-498-8
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Benzophenone-9 chemical structure, C15H12Na2O11S2, CAS 76656-36-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
76656-36-5
Formula
C15H12Na2O11S2
Molar mass
478.36 g/mol
EC number
221-498-8
HS code
291479
Category
UV filters

What is Benzophenone-9?

Plain description, key identifiers and synonyms

Benzophenone-9 is a chemical substance with the molecular formula C15H12Na2O11S2 and a molar mass of 478.36 g/mol. Its CAS registry number is 76656-36-5. The IUPAC name is disodium, 4-hydroxy-5-(2-hydroxy-4-methoxy-5-sulfonatobenzoyl)-2-methoxybenzenesulfonate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
disodium, 4-hydroxy-5-(2-hydroxy-4-methoxy-5-sulfonatobenzoyl)-2-methoxybenzenesulfonate
CAS number
76656-36-5Other or deprecated CAS: 3121-60-6
EC numbers
221-498-8, 278-520-4
Molecular formula
C15H12Na2O11S2
UNII
7925W14T4L
MDL number
MFCD02683831
INCI name
BENZOPHENONE-9
InChIKey
QDCHWIWENYCPIL-UHFFFAOYSA-L
InChI
InChI=1S/C15H14O11S2.2Na/c1-25-11-5-9(16)7(3-13(11)27(19,20)21)15(18)8-4-14(28(22,23)24)12(26-2)6-10(8)17;;/h3-6,16-17H,1-2H3,(H,19,20,21)(H,22,23,24);;/q;2*+1/p-2
SMILES (canonical and isomeric)
COC1=C(C=C(C(=C1)O)C(=O)C2=CC(=C(C=C2O)OC)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

Synonyms

  • Benzophenone 9
  • Uvinuc ds 49
  • Uvinul 3048
  • Disodium 2,2'-dihydroxy-4,4'-dimethoxy-5,5'-disulfobenzophenone
  • 2,2'-Dihydroxy-4,4'-dimethoxy-5,5'-disulfobenzophenone, disodium salt
  • Benzenesulfonic acid, 3,3'-carbonylbis(4-hydroxy-6-methoxy-, disodium salt
  • Disodium 3,3'-carbonylbis(4-hydroxy-6-methoxybenzenesulphonate)
  • Disodium 3,3'-carbonylbis[4-hydroxy-6-methoxybenzenesulphonate]
  • 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-5,5'-disulfonic acid sodium salt
  • Benzenesulfonic acid, 3,3'-carbonylbis[4-hydroxy-6-methoxy-, disodium salt
  • Sodium 2,2'-dihydroxy-4,4'-dimethoxy-5-sulfobenzophenone
  • Uvinul DS 49
  • 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone-5,5'-disulfonic acid disodium salt
  • disodium, 4-hydroxy-5-(2-hydroxy-4-methoxy-5-sulfonatobenzoyl)-2-methoxybenzenesulfonate
  • 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone-5,5'-disulphonic acid sodium salt
  • Benzenesulfonic acid, 3,3'-carbonylbis[4-hydroxy-6-methoxy-, disodiumsalt
  • Benzenesulfonic acid, 3,3'-carbonylbis(4-hydroxy-6-methoxy-, sodium salt (1:2)
  • 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone-5,5'-disulfonic Acid Disodium Salt, (Technical Grade)
  • Uvinul DS 49, Uvinul 3048, Benzophenone 9
  • benzophenone9
  • Benzophenone-9, analytical standard
  • 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-5,5'-disodium sulfonate
  • disodium,4-hydroxy-5-(2-hydroxy-4-methoxy-5-sulfonatobenzoyl)-2-methoxybenzenesulfonate
  • Benzophenone-9 Solution in Acetonitrile/Water, 100ug/mL
  • Benzophenone-9 Solution in Acetonitrile/Water, 1000ug/mL
Show all 29 synonyms
  • sodium 5,5'-carbonylbis(4-hydroxy-2-methoxybenzenesulfonate)
  • 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone-5,5'-disodiumsulfonate
  • 2,2'-Dihydroxy-4,4'-dimethoxy-benzophenone-5,5'-disulfonic acid disodium salt
  • 2,2'-Dihydroxy-4,4'-dimethoxybenzophenone-5,5'-disodium sulfonate disodium salt

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
478.36 g/molcalc.
Exact mass
477.9616 Dacalc.
LogP (octanol/water)
-5.84calc.
Topological polar surface area
190.4 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
11calc.
Rotatable bonds
6calc.
Heavy atoms
30calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.13calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.
Lipinski rule of five
Passes (1 violation)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=C(c1ccccc1)c1ccccc1

O=C(c1ccccc1)c1ccccc1

2 rings, 14 atoms, the Benzophenone ring system.

5,108 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Benzophenone-9 suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 12 suppliers
12 of 12 offers

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Where suppliers are based

12 suppliers in 5 countries

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Benzophenone-9 price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Use classes: Cosmetics.

Cosmetic ingredient, INCI name BENZOPHENONE-9(uv absorber)

Functional uses

  • UV stabilizer

Cosmetic functions

  • UV absorber

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

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 Benzophenone-9 is traded under.

HS 2914.79Indicative HS code

Halogenated, sulphonated, nitrated or nitrosated derivatives, other

World exports in 2024
$558M
−12.1% vs 2023, imports $608M
2019 to 2024
Top exporters
  1. China41.2%
  2. India * partner reported28.7%
  3. Germany16.7%
Top importers
  1. United States29.1%
  2. Italy9.9%
  3. Switzerland * partner reported8.8%

* Partner reported figures, a lower bound.

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

The HS code shown for Benzophenone-9 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Benzophenone-9, based on the data on this page

What is Benzophenone-9?

Benzophenone-9 is a chemical substance with the molecular formula C15H12Na2O11S2 and a molar mass of 478.36 g/mol. Its CAS registry number is 76656-36-5. The IUPAC name is disodium, 4-hydroxy-5-(2-hydroxy-4-methoxy-5-sulfonatobenzoyl)-2-methoxybenzenesulfonate.

What is the CAS number of Benzophenone-9?

The CAS registry number of Benzophenone-9 is 76656-36-5. Other or deprecated CAS numbers: 3121-60-6.

What is the molecular formula and weight of Benzophenone-9?

The molecular formula of Benzophenone-9 is C15H12Na2O11S2 and its molar mass is 478.36 g/mol.

What is Benzophenone-9 used for?

Use classes: Cosmetics.

Is Benzophenone-9 hazardous?

No GHS hazard classification for Benzophenone-9 is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Benzophenone-9?

Benzophenone-9 is usually classified under HS code 291479 (Halogenated, sulphonated, nitrated or nitrosated derivatives, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Benzophenone-9?

CompoundList lists 12 suppliers of Benzophenone-9 in China, United Kingdom, Netherlands, Thailand and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Benzophenone-9?

Suppliers quote Benzophenone-9 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 Benzophenone-9

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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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