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2,4-Dihydroxybenzophenone

Also known as Benzoresorcinol, Resbenzophenone, Inhibitor DHBP

CAS 131-56-6Formula C13H10O3Molar mass 214.22 g/molEC 205-029-4
GHS signal word: Warning. Pictograms: Harmful or irritant 41 suppliers listed
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2,4-Dihydroxybenzophenone chemical structure, C13H10O3, CAS 131-56-6
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Needles from hot water
Melting point
144 °C
Boiling point
194 °C
Density
5.8 lb/gallon at 20 °C
Solubility
Practically insoluble in cold water
HS code
291450
Category
UV filters
Illustrative photo, closed blue fibre drums on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 2,4-Dihydroxybenzophenone?

Plain description, key identifiers and synonyms

2,4-Dihydroxybenzophenone is a member of benzophenones.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2,4-dihydroxyphenyl)-phenylmethanone
CAS number
131-56-6 CAS number cross-checkedOther or deprecated CAS: 92092-63-2
EC number
205-029-4
Molecular formula
C13H10O3
UNII
LJ54R4Z029
MDL number
MFCD00002277
INCI name
BENZOPHENONE-1
InChIKey
ZXDDPOHVAMWLBH-UHFFFAOYSA-N
InChI
InChI=1S/C13H10O3/c14-10-6-7-11(12(15)8-10)13(16)9-4-2-1-3-5-9/h1-8,14-15H
SMILES (canonical and isomeric)
C1=CC=C(C=C1)C(=O)C2=C(C=C(C=C2)O)O

Synonyms

  • Benzoresorcinol
  • Resbenzophenone
  • Inhibitor DHBP
  • Uvinul 400
  • Advastab 48
  • Uvistat 12
  • Quinsorb 010
  • Syntase 100
  • Methanone, (2,4-dihydroxyphenyl)phenyl-
  • Uvinol 400
  • Eastman Inhibitor DHPB
  • 4-Benzoyl resorcinol
  • Dastib 263
  • (2,4-Dihydroxyphenyl)phenylmethanone
  • USAF DO-28
  • USAF ND-54
  • UV 12
  • 2,4-Dihydroxybenzofenon
  • (2,4-dihydroxyphenyl)-phenyl-methanone
  • (2,4-dihydroxyphenyl)-phenylmethanone
  • 2,4-DHB
  • DHBP cpd
  • Benzophenone-1
  • (2,4-dihydroxyphenyl)(phenyl)methanone
  • 4-Benzoylresorcinol
Show all 37 synonyms
  • benzophenone 1
  • Benzophenone, 2,4-dihydroxy-
  • UF 1
  • 2,4-dihydroxy benzophenone
  • [2,4-bis(oxidanyl)phenyl]-phenyl-methanone
  • 2,4 inverted exclamation marka-Dihydroxybenzophenone
  • HHB
  • Benzophenone,4-dihydroxy-
  • 2,4-dihydroxyphenyl phenyl ketone
  • Methanone,4-dihydroxyphenyl)phenyl-
  • 4-benzoylbenzene-1,3-diol
  • (2,4-Dihydroxy-phenyl)-phenyl-methanone

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

Appearance
Needles from hot waterexp.
Melting point
144 °Cexp.
Boiling point
194 °Cexp.
Density
5.8 lb/gallon at 20 °Cexp.
Solubility
Practically insoluble in cold waterexp.

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
214.22 g/molcalc.
Exact mass
214.063 Dacalc.
LogP (octanol/water)
2.33calc.
Topological polar surface area
57.53 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
16calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 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=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

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

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • 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.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

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

2,4-Dihydroxybenzophenone suppliers

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All 41 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

41 suppliers in 9 countries

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2,4-Dihydroxybenzophenone 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

Ultraviolet light absorber, especially in paints and plastics.

Ultraviolet absorber in polymers.

Used as sunscreening agent.

Use classes: Cosmetics.

Cosmetic ingredient, INCI name BENZOPHENONE-1(light stabilizer, uv absorber)

Functional uses

  • Fragrance
  • UV stabilizer

Cosmetic functions

  • Light stabilizer
  • UV absorber

How it is made

2,4-Dihydroxybenzophenone ... is formed in 90% yield by the uncatalyzed reaction of benzotrichloride with resorcinol in hydroxylic solvents or in benzene containing methanol or ethanol.

Three methods of Benzophenone-1 preparation from resorcinol are reported. Stephen and Zilberman and Rybakova prepared Benzophenone-1 from the Hoesch reaction of resorcinol and either a substituted imido chloride (to form an imido-ester intermediate) or a corresponding aromatic nitrile and a metal halide catalyst. Shaw and Mehta described the condensation of benzamide with resorcinol in the presence of phosphorous oxychloride and zinc chloride to Benzophenone-1. Additionally, Benzophenone-1 can be prepared in low yield by the Fries rearrangement from phenyl-2-methoxy-benzoate.

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 2,4-Dihydroxybenzophenone is traded under.

HS 2914.50Indicative HS code

Ketone-phenols and ketones with other oxygen function

World exports in 2024
$438M
+10.9% vs 2023, imports $420M
2019 to 2024
Top exporters
  1. China50.5%
  2. India * partner reported11.6%
  3. United States11.3%
Top importers
  1. United States20.8%
  2. Germany10.0%
  3. Netherlands8.6%

* Partner reported figures, a lower bound.

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

The HS code shown for 2,4-Dihydroxybenzophenone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2,4-Dihydroxybenzophenone, based on the data on this page

What is 2,4-Dihydroxybenzophenone?

2,4-Dihydroxybenzophenone is a member of benzophenones.

What is the CAS number of 2,4-Dihydroxybenzophenone?

The CAS registry number of 2,4-Dihydroxybenzophenone is 131-56-6. Other or deprecated CAS numbers: 92092-63-2.

What is the molecular formula and weight of 2,4-Dihydroxybenzophenone?

The molecular formula of 2,4-Dihydroxybenzophenone is C13H10O3 and its molar mass is 214.22 g/mol.

What is 2,4-Dihydroxybenzophenone used for?

Ultraviolet light absorber, especially in paints and plastics. Ultraviolet absorber in polymers. Used as sunscreening agent. Use classes: Cosmetics.

Is 2,4-Dihydroxybenzophenone hazardous?

2,4-Dihydroxybenzophenone carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2,4-Dihydroxybenzophenone?

2,4-Dihydroxybenzophenone is usually classified under HS code 291450 (Ketone-phenols and ketones with other oxygen function). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2,4-Dihydroxybenzophenone?

CompoundList lists 41 suppliers of 2,4-Dihydroxybenzophenone in China, United States, Netherlands, Canada and 5 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 2,4-Dihydroxybenzophenone in India?

1 supplier in India list 2,4-Dihydroxybenzophenone on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 2,4-Dihydroxybenzophenone?

Suppliers quote 2,4-Dihydroxybenzophenone 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 2,4-Dihydroxybenzophenone

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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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