4-Formylbenzene-1,3-disulfonic acid disodium salt hydrate
4-Formylbenzene-1,3-disulfonic acid disodium salt hydrate (CAS 207291-88-1) is an organic compound featuring both aldehyde and sulfonate functionalities. This aqueous-soluble molecule serves as a versatile building block in chemical synthesis. Its structure allows for diverse reactions, making it a valuable intermediate for creating more complex organic molecules. Primarily utilized in research and development settings, it contributes to the synthesis of specialty chemicals and materials.
- IUPAC
- Benzaldehyde 2,4-disulfonic acid disodium salt,Sodium 4-formylbenzene-1,3-disulfonate
- Synonyms
- Benzaldehyde 2,4-disulfonic acid disodium salt, Sodium 4-formylbenzene-1,3-disulfonate

Organic Synthesis Intermediate
This compound acts as a key building block for constructing more complex organic structures. The presence of both an aldehyde group and two sulfonate groups provides multiple reaction sites for further chemical modification.
Research and Development
Utilized in academic and industrial laboratories for exploring novel chemical pathways and developing new materials or compounds. Its specific functionalities make it suitable for investigating structure-activity relationships.
Specialty Chemical Production
Can be employed in the synthesis of various specialty chemicals where its unique disulfonated benzaldehyde structure is advantageous.
| Molecular weight | 310.21 (anhydrous basis) |
|---|---|
| Linear formula | HCOC6H3(SO3Na)2 · xH2O |
| Assay | 97% |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 4-Formylbenzene-1,3-disulfonic acid disodium salt hydrate primarily used for?
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It is primarily used as a versatile building block in organic synthesis and in research and development for creating more complex organic molecules and specialty chemicals.
What are the CAS number and formula for this product?
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The CAS number is 207291-88-1, and the linear formula is HCOC6H3(SO3Na)2 · xH2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of 97%. This is suitable for research and technical applications. TSS does not represent this product as USP, BP, or EP grade.
How should this chemical be handled safely?
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This compound is classified as a Warning, causing skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment including a dust mask (N95), eyeshields, and gloves. Ensure good ventilation.
Is this chemical shipped internationally by TSS?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, and this product can be exported worldwide.
How can I request a sample or quote for 4-Formylbenzene-1,3-disulfonic acid disodium salt hydrate?
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To request a sample or a quote, please contact our sales team through the website or by phone, referencing the product name and CAS number 207291-88-1.
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