Yuanfar Chemicals
Products: Maleic Anhydride
CAS No: 123-33-1
Description: White powder, used as a pesticide and pharmaceutical intermediate. It can be employed as a selective herbicide and temporary plant growth inhibitor.
  • Technology and characteristics
  • Product index
  • Product application
    Technology and characteristics :

    Targeted Mechanism: Acts as an anti-metabolite, specifically inhibiting cell division (mitosis) in meristematic tissues (buds, root tips) by disrupting nucleic acid synthesis. Not a broad-spectrum toxin.

    Systemic Action: Exhibits translaminar and systemic movement within plants, allowing flexible application (foliar spray, soil drench).

    Growth Suppression vs. Lethality: Primarily inhibits growth (induces dormancy/stasis) rather than causing rapid tissue necrosis. Effects are often temporary and reversible.

    Synthesis & Stability: Produced via a mature process from maleic anhydride and hydrazine hydrate. The technical material is a stable, white crystalline solid suitable for various formulations.


    Post-Harvest Loss Reduction: Effectively suppresses sprouting in stored potatoes, onions, and tobacco, extending shelf life and reducing economic losses.

    Growth Management: Controls suckers in tobacco and manages excessive vegetative growth in orchards/ornamentals, improving crop quality and reducing labor for pruning.

    Herbicide Synergist: Enhances the efficacy of certain herbicides in mixture applications.

    Versatile Intermediate: Serves as a valuable building block in synthesizing specialized polymers and fine chemicals.


    Product index :

    Appearance

    White to off-white crystalline powder

     

    Assay (Active Ingredient)

    ≥ 98.0% (HPLC)

    Industrial grade typically ≥96%; high-purity grade can reach ≥99%

    Water Content

    ≤ 0.5%

     

    Melting Point

    292 - 298 °C (decomposes)

     

    PH (Saturated Solution)

    Approx. 5.0 - 6.0

     

    Solubility

    Slightly soluble in water (~0.6% at 25°C), soluble in alkali solutions

     

    Heavy Metals (as Pb)

    ≤ 10 mg/kg

    Stricter requirements for pharmaceutical/high-end applications


    Product application :

    High Cost-Effectiveness: Mature production process and clear application benefits.Systemic & Targeted Action: Moves within the plant to act specifically on meristematic tissues.

    Suppressive vs. Lethal: Offers controlled growth inhibition suitable for preservation and management, rather than outright destruction.

    Dual-Use Value: Bridges agriculture and industrial chemistry, enhancing its overall utility.

     

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