Welcome to GlobalChemMall

ALL CATEGORIES
Categories
0
Wishlist
Home > All categories> Biochemicals and Pharmaceutical Chemicals> Pharmaceutical Intermediates> butynedioic acid
Picture of butynedioic acid

butynedioic acid

Get Latest Price >

FOB Price contact us for price

Origin: China

Cas No: 142-45-0

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

Vendor:

Payment Terms:

Inquiry now

* Send an Inquiry to us

Add to wishlist

* Name your price
* Start order doesn't mean buying now

  • Products Specification
  • Product Description

  • Quick Details

    CAS No.:
    142-45-0
    Other Names:
    2-Butynedioic Acid
    MF:
    C4H2O4
    EINECS No.:
    205-536-0
    Place of Origin:
    Beijing, China
    Purity:
    95%
    Classification:
    Specific Reagents
    Brand Name:
    psaitong
    Model Number:
    A60012
    Application:
    Nucleic Acid
    Usage:
    Histology
    Suitable for:
    Etc

    Packaging&Delivery

    Packaging Details
    5g 25g 100g in glass bottle
    Port
    beijing
    Lead Time:
    Quantity(Grams)1 - 5000>5000
    Est. Time(days)14To be negotiated

  • Property

    CAS No.: 142-45-0 Formula: C4H2O4 Molecular Weight: 114.05600

    Description

    Acetylenedicarboxylic acid or butynedioic acid is an organic compound (a dicarboxylic acid) with the formula C4H2O4 or HO2C-C≡C-CO2H. It is a crystalline solid that is soluble in diethyl ether.
    The removal of two protons yields the acetylenedicarboxylate dianion C4O42−, which consists only of carbon and oxygen, making it an oxocarbon anion. Partial ionization yields the monovalent hydrogenacetylenedicarboxylate anion HC4O4−.
    The acid was first described in 1877 by Polish chemist Ernest Bandrowski. It can be obtained by treating α,β-dibromosuccinic acid with potassium hydroxide KOH in methanol or ethanol. The reaction yields potassium bromide and potassium acetylenedicarboxylate. The salts are separated and the latter is treated with sulfuric acid.
    Acetylenedicarboxylic acid is used in the synthesis of dimethyl acetylenedicarboxylate, an important laboratory reagent. Both the acid and the monobasic salt potassium hydrogenacetylenedicarboxylate KC4HO4 are commonly traded as laboratory chemicals. It can also be reacted with sulfur tetrafluoride to produce hexafluoro-2-butyne, a powerful dienophile for use in Diels-Alder reactions.

    Basic Info

    Chemical Name butynedioic acid
    Synonyms

    but-2-ynedioic acid;
    Acetylenedicarboxylic acid;
    2-Butynedioic acid;

    CAS No. 142-45-0
    Molecular Formula C4H2O4
    Molecular Weight 114.05600
    PSA 74.60000
    LogP -0.84100

    Properties

    Appearance & Physical State cream coloured to beige crystalline powder
    Density 1.699 g/cm3
    Boiling Point 362.4ºC at 760 mmHg
    Melting Point 180-187ºC
    Flash Point 131ºC
    Water Solubility soluble
    Stability Stable under normal temperatures and pressures.
    Storage Condition 2-8ºC
    Vapor Pressure 3.08E-06mmHg at 25°C

    Safety Info

    Hazard Class 6.1
    Safety Statements S26-S37/39-S45
    HS Code 29171990
    WGK Germany 3
    Packing Group II
    RIDADR UN 2811
    Risk Statements R25; R36/37/38
    Hazard Codes T; Xi

    Synthesis Route

    butyllithium+bromoethene→Propiolic acid+butynedioic acid
    meso-2,3-Dibromosuccinic acid→hydrogen bromide+Propiolic acid
    but-2-yne-1,4-diol→butynedioic acid

    Precursor

    bromoethene
    but-2-yne-1,4-diol
    carbon dioxide
    butyllithium

    Downstream Product

    diethyl (Z)-2-chlorobut-2-enedioate
    carbon dioxide
    Propiolic acid
    oxaloacetic acid

Hot tags: butynedioic acid, China, manufacturers, suppliers, factory, wholesale, low price, high quality
You may also like