3,6-Dichloropyridazine
3,6-Dichloropyridazine (CAS: 141-30-0) is a halogenated heterocyclic compound with the molecular formula C4H2Cl2N2 and a molecular weight of 148.98 g/mol. This chemical serves as a valuable building block in organic synthesis, particularly for the construction of more complex molecules within the pharmaceutical and agrochemical industries. Its reactivity profile allows for diverse functionalisation, making it a key intermediate in various synthetic pathways.
- Synonyms
- 3,6-Dichloropyridazine141-30-0

Pharmaceutical Intermediate
Utilised in the synthesis of active pharmaceutical ingredients (APIs). The pyridazine core is found in various therapeutic agents, and 3,6-dichloropyridazine provides a convenient starting point for functionalisation.
Agrochemical Synthesis
Serves as a precursor for the development of novel pesticides and herbicides. Its structure can be modified to create compounds with specific biological activities relevant to crop protection.
Organic Synthesis Reagent
A versatile building block in academic and industrial research for creating novel heterocyclic compounds. Its two chlorine atoms offer distinct sites for nucleophilic substitution reactions.
| Molecular weight | 148.98 |
|---|---|
| Empirical formula | C4H2Cl2N2 |
| Assay | 97% |
| Melting point | 65-69 °C(lit.) |

Hazard statements
- H301Toxic if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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 3,6-Dichloropyridazine used for?
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3,6-Dichloropyridazine is primarily used as a building block and intermediate in organic synthesis, particularly for the development of pharmaceuticals and agrochemicals. It is also employed in research for creating novel heterocyclic compounds.
What is the CAS number and formula for 3,6-Dichloropyridazine?
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The CAS number for 3,6-Dichloropyridazine is 141-30-0, and its empirical formula (Hill notation) is C4H2Cl2N2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,6-Dichloropyridazine with an assay of 97%. We do not represent this product as USP, BP, or EP grade; it is suitable for research and chemical synthesis purposes.
How should 3,6-Dichloropyridazine be handled safely?
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3,6-Dichloropyridazine is a dangerous substance. Handle with appropriate personal protective equipment including a dust mask (N95 US type), eyeshields, face shields, and gloves. It is harmful if swallowed, causes skin irritation, and causes serious eye irritation. Avoid breathing dust and ensure adequate ventilation. Refer to the Safety Data Sheet (SDS) for comprehensive handling information.
Is 3,6-Dichloropyridazine a controlled substance?
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Based on the provided data, 3,6-Dichloropyridazine (CAS 141-30-0) is not indicated as a controlled substance. However, regulations can vary by jurisdiction, and users should verify compliance with local laws.
How is 3,6-Dichloropyridazine packed and shipped?
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Tech Serve Solutions ensures that 3,6-Dichloropyridazine is appropriately packed and exported in compliance with international shipping regulations for hazardous chemicals.
How can I request a sample or quote for 3,6-Dichloropyridazine?
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To request a sample or a quotation for 3,6-Dichloropyridazine, please contact our sales team through the website or by phone. Provide your specific requirements, including the quantity needed.
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