Maleic hydrazide
Maleic hydrazide (CAS: 123-33-1), chemical formula C4H4N2O2, is a vital organic compound with a molecular weight of 112.09 g/mol. This pyridazine derivative serves as a key intermediate in chemical synthesis and is recognised for its applications in various industrial processes. Available from Tech Serve Solutions, it meets stringent quality standards for laboratory and research applications.
- IUPAC
- 1,2-Dihydro-3,6-pyridazinedione,3,6-Dihydroxypyridazine,3,6-Pyridazinediol
- Synonyms
- 1,2-Dihydro-3,6-pyridazinedione3,6-Dihydroxypyridazine3,6-Pyridazinediol

Chemical Synthesis Intermediate
Maleic hydrazide acts as a fundamental building block in the synthesis of more complex organic molecules. Its heterocyclic structure makes it valuable for creating diverse chemical entities in research and development settings.
Agrochemical Research
This compound has historically been investigated for its plant growth regulating properties. While specific applications require careful evaluation, its structure is of interest in agricultural chemistry research.
Material Science Exploration
As a pyridazine derivative, maleic hydrazide can be explored for its potential inclusion in novel material formulations. Its chemical properties may lend themselves to creating advanced materials with unique characteristics.
| Molecular weight | 112.09 |
|---|---|
| Empirical formula | C4H4N2O2 |
| Assay | 99% |
| Grade | ReagentPlus® |
| Autoignition temp | 707 °F |
| Melting point | 299-301 °C (dec.)(lit.) |


Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H341Suspected of causing genetic defects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P281Use personal protective equipment as required
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | 300 °C / 572 °F |
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 36/37/38-68 |
| Safety statements (S) | 26-36/37/39 |
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 Maleic hydrazide primarily used for?
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Maleic hydrazide is primarily used as a building block in chemical synthesis and has been explored for applications in agrochemical research due to its potential plant growth regulating properties.
What are the CAS number and chemical formula for Maleic hydrazide?
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The CAS number for Maleic hydrazide is 123-33-1 and its chemical formula is C4H4N2O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Maleic hydrazide with a minimum assay of 99% and a ReagentPlus® grade. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
What are the key safety considerations for handling Maleic hydrazide?
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Maleic hydrazide is a warning substance that may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). It is also suspected of causing genetic defects (H341). Always use appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, and gloves, and handle in a well-ventilated area.
How is Maleic hydrazide packed and shipped?
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Maleic hydrazide is typically shipped as UN 3077, Class 9, Packing Group III. Specific packaging details for export can be confirmed upon inquiry.
How can I request a quote or sample?
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To request a quote or sample of Maleic hydrazide, please contact our sales team through the website or by phone, providing your specific requirements.
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