Methyl 3,5-dichloro-4-hydroxybenzoate hydrate
Methyl 3,5-dichloro-4-hydroxybenzoate hydrate (CAS: 287399-19-3) is a halogenated aromatic ester with the linear formula Cl₂C₆H₂(OH)CO₂CH₃·xH₂O. Weighing 221.04 g/mol on an anhydrous basis, this compound serves as a valuable building block in organic synthesis. Its structure, featuring chlorine atoms and a hydroxyl group on a benzoate core, makes it suitable for a range of chemical reactions and intermediate preparations in research and development settings.
- Synonyms
- Cl2C6H2(OH)CO2CH3·xH2O

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its functional groups allow for various chemical transformations.
Research and Development
Employed in laboratory settings for research purposes, including the exploration of new chemical pathways and the development of novel compounds.
Building Block Chemistry
Serves as a versatile building block for constructing diverse chemical structures within the C8 to C9 carbon range.
| Molecular weight | 221.04 (anhydrous basis) |
|---|---|
| Linear formula | Cl2C6H2(OH)CO2CH3·xH2O |
| Assay | 99% |
| Melting point | 123-125 °C(lit.) |

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) | 26-36 |
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 Methyl 3,5-dichloro-4-hydroxybenzoate hydrate used for?
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Methyl 3,5-dichloro-4-hydroxybenzoate hydrate is primarily used as a building block in organic synthesis and for research and development purposes.
What is the CAS number and formula for Methyl 3,5-dichloro-4-hydroxybenzoate hydrate?
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The CAS number is 287399-19-3, and its linear formula is Cl₂C₆H₂(OH)CO₂CH₃·xH₂O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound with an assay of 99%. We do not represent it as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated.
What are the safety and handling precautions for this chemical?
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This compound is a warning irritant (H315, H319, H335). Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Avoid breathing dust. Ensure good ventilation. Refer to the SDS for comprehensive safety information.
How is Methyl 3,5-dichloro-4-hydroxybenzoate hydrate packed, shipped, and exported?
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We offer specialised packaging for chemicals, ensuring secure transport and compliance with international shipping regulations for export. Specific packaging details are confirmed upon order.
How can I request a sample or a quote?
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To request a sample or a quote, please contact our sales team via the 'Contact Us' section of our website or by calling our direct line. Please specify the product name and CAS number.
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