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    HomeProductsBasic & Fine ChemicalsChemical IntermediatesDimethyl Hydrogen Phosphite CAS 868-85-9
    • Dimethyl Hydrogen Phosphite CAS 868-85-9

    Dimethyl Hydrogen Phosphite CAS 868-85-9

    Dimethyl Hydrogen Phosphite is an organophosphorus ester and reactive intermediate extensively utilized in the synthesis of organophosphorus pesticides and flame retardants. Widely recognized in the chemical sector as Dimethyl phosphite or DMP, this clear liquid functions as a critical phosphorylation agent for producing herbicides like glyphosate, insecticides, and textile treating agents. We provide this high-purity raw material with competitive factory pricing to facilitate efficient downstream manufacturing. Our supply chain ensures reliable bulk supply availability and customized specifications, accompanied by complete MSDS, TDS, COA documentation for strict quality control and regulatory compliance.

    • CAS: 868-85-9
    • Synonyms: Dimethyl phosphite, DMP, Phosphorous acid dimethyl ester, Dimethyl acid phosphite
    • Einecs: 212-783-8
    • Molecular Formula: C2H7O3P
    • Grade: Industrial grade 99%
    • Package: 200kg iron drum or 50kg plastic drum packing
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    Product Description

    Dimethyl hydrogen phosphite

    Synonyms: Tetramethylammonium chloride Tetramethylammonium chloride Tetramethylammonium chloride Tetramethyl chloride

    More names: TMA

    CAS Number: 868-85-9

    Refractive Index : 1.400-1.410

    Specific Gravity : 1.19-1.21

    Formula: C2H7O3P

    Molecular weight: 110.0489

    Properties: Colorless fluid liquid

    Density (g/mL, 24/4°C): 1.200

    Boiling point (ºC, atmospheric pressure): 170-171°C

    Boiling point (ºC, 1.07kPa): 56.5°C

    Flash point (ºC): 29°C

    use

    It is commonly used as a lubricant additive, adhesive and certain organic synthesis intermediates for the synthesis of pesticides Oxidized Lego、Methylthiocclopho sand herbicidesGlyphosphorusWait.

    Security terminology

    S26：In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

    Immediately after eye contact, rinse with plenty of water and seek a doctor’s opinion.

    S36/37：Wear suitable protective clothing and gloves.

    Wear appropriate protective clothing and gloves.

    Risk terminology

    R10：Flammable.

    Combustible.

    R21：Harmful in contact with skin.

    Contact with the skin is harmful.

    R36：Irritating to eyes.

    Irritation to the eyes.

    FAQ - Technical & Supply Chain

    • Q:

      Does Dimethyl Hydrogen Phosphite refer to the neutral tri-ester or the reactive dialkyl phosphite with active hydrogen?

      A: Dimethyl Hydrogen Phosphite is verified under CAS 868-85-9 as the dialkyl phosphite containing a reactive P-H bond, distinguishing it from Trimethyl Phosphite to ensure the specific reactivity required for adding across double bonds in the synthesis of phosphonate derivatives.
    • Q:

      What is the primary role of Dimethyl Hydrogen Phosphite in the production of agrochemicals and flame retardants?

      A: Dimethyl Hydrogen Phosphite is typically applied as a key phosphorus intermediate used to synthesize glyphosate herbicide and organophosphorus flame retardants, utilizing its high reactivity to introduce phosphonate groups into organic molecules.
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    • COA for batch-based quality reference
    • TDS for key physical and chemical information
    • SDS / MSDS for handling, storage, and safety reference
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    • Technical communication based on application and specification requirements
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    Information to Confirm Before Quotation

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    • Product name and CAS number
    • Application or intended end use
    • Required purity, grade, or specification
    • Sample quantity, trial order, or bulk demand
    • Preferred packing form or net weight
    • Destination country or port
    • Required documents or compliance expectations
    Storage & Handling

    Packaging, Storage, and Handling Notes

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    Product Categories

    Tags:

    Organophosphorus Intermediate Phosphite Ester Phosphorus Reagent Reducing Reagent

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