2,4-Dihydroxybenzophenone
2,4-Dihydroxybenzophenone (CAS: 131-56-6), also known by its linear formula (HO)2C6H3COC6H5 and a molecular weight of 214.22 g/mol, is a valuable organic compound. It functions primarily as a UV absorber, protecting materials from photodegradation. Its applications span various industries where light stability is critical, including polymer science and materials protection.
- IUPAC
- DHB
- Synonyms
- (HO)2C6H3COC6H5

UV Stabilizer in Polymers
2,4-Dihydroxybenzophenone is incorporated into plastics and other polymeric materials to absorb harmful ultraviolet radiation. This prevents material degradation, discoloration, and loss of mechanical properties caused by prolonged sun exposure.
Component in Protective Coatings
This compound can be used in coatings and varnishes to enhance their resistance to UV light. It helps maintain the aesthetic appearance and structural integrity of coated surfaces over time.
Intermediate in Organic Synthesis
As a functionalized benzophenone derivative, it serves as a building block in the synthesis of more complex organic molecules for research and development purposes.
| Molecular weight | 214.22 |
|---|---|
| Linear formula | (HO)2C6H3COC6H5 |
| Assay | 99% |
| Melting point | 144.5-147 °C(lit.) |

Hazard statements
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | rat ... Ar(24208) |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2,4-Dihydroxybenzophenone used for?
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2,4-Dihydroxybenzophenone (CAS: 131-56-6) is primarily used as a UV absorber to protect polymers and other materials from photodegradation. It also serves as an intermediate in organic synthesis.
What are the CAS number and formula for 2,4-Dihydroxybenzophenone?
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The CAS number for 2,4-Dihydroxybenzophenone is 131-56-6, and its linear formula is (HO)2C6H3COC6H5.
What grade and purity does Tech Serve Solutions supply for 2,4-Dihydroxybenzophenone?
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Tech Serve Solutions supplies 2,4-Dihydroxybenzophenone with an assay of 99%. This product is supplied for research and laboratory use and is not represented as USP, BP, EP, or pharmacopoeia grade.
How should 2,4-Dihydroxybenzophenone be handled safely?
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According to GHS guidelines, 2,4-Dihydroxybenzophenone is a warning substance (Signal Word: Warning) and causes serious eye irritation (H319). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a type N95 dust mask. Ensure good ventilation and avoid dust formation. In case of contact with eyes, rinse cautiously with water for several minutes (P305 + P351 + P338).
How is 2,4-Dihydroxybenzophenone packed, shipped, and exported?
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Tech Serve Solutions reliably packs, ships, and exports 2,4-Dihydroxybenzophenone globally, adhering to all necessary regulations for chemical transport.
How can I request a quote or sample for 2,4-Dihydroxybenzophenone?
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To request a quote or sample of 2,4-Dihydroxybenzophenone, please contact our sales team through the website or by phone, providing your specific requirements.
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