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Diphenylmethane-4,4'-diisocyanate

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Origin: China

Cas No: 101-68-8

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

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  • Products Specification
  • Product Description

  • Quick Details

    CAS No.:
    101-68-8
    Other Names:
    Methylene Diphenyl Diisocyanate
    MF:
    C15H10N2O2
    EINECS No.:
    202-966-0
    Place of Origin:
    Hubei, China
    Type:
    Pharmaceutical Intermediates
    Purity:
    99%
    Brand Name:
    Monad
    Model Number:
    101-68-8
    Application:
    Pharmaceutical Intermediates
    Appearance:
    colorless liquid
    Delivery time:
    2-3 days
    Loss on Drying:
    ≤1.0%
    Packing:
    25kg/drum
    Storage:
    Dry and cool place and keep away from strong light
    Payment:
    BTC,TT,WU,MG
    Customs:
    Free of customs
    Sample:
    Available
    Shelf life:
    2 years

    Packaging&Delivery

    Packaging Details
    25kg/drum
    Port
    Shenzhen
    Lead Time:
    Quantity(Kilograms)1 - 5000>5000
    Est. Time(days)7To be negotiated

    Products Description

    Product Name
    Methylene Diphenyl Diisocyanate
    Function
    Pharmaceutical Intermediates
    CAS No
    101-68-8
    Molecular Formula
    C15H10N2O2
    Brand
    Monad
    Appearance
    yellow liquid
    Package
    Drum/Aluminum Foll Bag/According to customer's requirement

  • Property

    CAS No.: 101-68-8 Formula: C15H10N2O2 Molecular Weight: 250.25200

    Description

    Methylene diphenyl diisocyanate, most often abbreviated as MDI, is an aromatic diisocyanate. It exists in three isomers, 2,2'-MDI, 2,4'-MDI, and 4,4'-MDI, however, the 4,4' isomer is most widely used. This isomer is also known as Pure MDI. MDI reacts with polyols in the manufacture of polyurethane. It is the most produced diisocyanate, accounting for 61.3% of the global market in the year 2000.

    Basic Info

    Chemical Name Diphenylmethane-4,4'-diisocyanate
    Synonyms

    4,4'-methylenediphenyl diisocyanate;
    Methylene di-p-phenyl diisocyanate,flakes;
    4,4'-diphenylmethanediisocyanate;
    4,4'-MDI;
    bis(4-isocyanatophenyl)methane;
    hylenem50;
    caradate30;
    Methylenediphenyl 4,4'-Diisocyanate;
    PMDI;
    methylene 4,4'-diphenyl diisocyanate;
    4,4'-Diphenylmethane Diisocyanate;
    Isonate;
    4,4-Diphenylmethane Diisocyanate;
    1,1‘-Methylenebis[4-isocyanatobenzene];
    p,p'-diphenylmethane diisocyanate;
    methylene;
    4,4'-Methylenebis(phenyl Isocyanate);
    desmodur44;

    CAS No. 101-68-8
    Molecular Formula C15H10N2O2
    Molecular Weight 250.25200
    PSA 58.86000
    LogP 3.21200

    Properties

    Appearance & Physical State white to light yellow flakes or crystals
    Density 1.19
    Boiling Point 392ºC
    Melting Point 38-44ºC
    Freezing Point 37℃
    Flash Point 196ºC
    Refractive Index 1.5906 (50ºC)
    Water Solubility decomposes
    Stability Stable. Combustible. Incompatible with strong oxidizing agents. Reacts violently with alcohols.
    Storage Condition Refrigerator
    Vapor Pressure 9.02E-06mmHg at 25°C

    Safety Info

    RTECS NQ9350000
    Hazard Class 6.1
    Safety Statements S23-S36/37-S45
    HS Code 29291090
    Packing Group II
    RIDADR UN 2811
    Risk Statements R20; R36/37/38; R42/43
    Hazard Codes Xn
    Hazard Declaration H315; H317; H319; H332; H334; H335; H351; H373
    Caution Statement P260; P280; P284; P304 + P340; P305 + P351 + P338; P342 + P311
    Signal Word Danger
    Symbol GHS07, GHS08

    Synthesis Route

    phosgene+2-[(2-aminophenyl)methyl]aniline→1-isocyanato-2-[(2-isocyanatophenyl)methyl]benzene+Diphenylmethane-4,4'-diisocyanate
    phosgene+2-(4-Aminobenzyl)aniline→1-isocyanato-2-[(2-isocyanatophenyl)methyl]benzene+1-Isocyanato-2-(4-isocyanatobenzyl)benzene
    Carbamic acid, (methylenedi-4,1-phenylene)bis-, dimethyl ester→Diphenylmethane-4,4'-diisocyanate

    Toxicity

    Exposure Route Type of Test Species Observed Dose/Duration Toxic Effects
    Administration onto the skin Standard Draize test Rodent - rabbit 500 mg/24H -
    Inhalation TCLo - Lowest published toxic concentration Human 130 ppb/30M 1.Immunological Including Allergic-increased immune response
    2.Nutritional and Gross Metabolic-body temperature increase
    - Mutation in microorganisms - 50 ug/plate -

    Precursor

    4,4'-diaminodiphenylmethane
    N,N'-(4,4'-methanediyl-di-phenyl)-bis-carbamic acid diisopentyl ester
    N,N'-(4,4'-methanediyl-di-phenyl)-bis-carbamic acid dibutyl ester
    Carbamic acid, (methylenedi-4,1-phenylene)bis-, dimethyl ester

    Downstream Product

    N-[4-[[4-(aziridine-1-carbonylamino)phenyl]methyl]phenyl]aziridine-1-carboxamide
    2-isocyanatoethoxy(trimethyl)silane
    triethyl phosphate
    phenyl N-[4-[[4-(phenoxycarbonylamino)phenyl]methyl]phenyl]carbamate

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