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Изображение 4-(4-nitrophenylazo)resorcinol

4-(4-nitrophenylazo)resorcinol

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начало: Китай

Кас Но: 74-39-5

Спецификация: 99%наименьший

минимальный объем заказа: 1 /kg

снабженческая способность: 50 mt/month

опережающий период: OEM 7 дней, пятно 3 дня

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  • Характеристики продукции
  • Описание продукта
  • Property

    CAS No.: 74-39-5 Formula: C12H9N3O4 Molecular Weight: 259.21800

    Description

    Azo violet (4-(4-Nitrophenylazo)resorcinol) is an organic compound with the chemical formula C12H9N3O4. It is used commercially as a violet dye and experimentally as a pH indicator, turning blue-purple in the presence of magnesium salt in a slightly alkaline, or basic, environment. Azo violet may also be used to test for the presence of ammonium ions. The color of ammonium chloride or ammonium hydroxide solution will vary depending upon the concentration of azo violet used.
    Tautomerization of Azo Violet; Azo Violet Isomerization; Azo violet is synthesized from a diazonium salt coupling reaction, from nitrophenol and resorcinol derivatives. The intense color from which the compound gets its name results from irradiation and subsequent excitation and relaxation of the extended pi electron system across the R-N=N-R’ linked phenols. Absorption of these electrons falls in the visible region of the electromagnetic spectrum. Azo violet’s intense indigo color (λmax 432 nm) approximates Pantone R: 102 G: 15 B: 240.

    Basic Info

    Chemical Name 4-(4-nitrophenylazo)resorcinol
    Synonyms

    4-(4-Nitrophenylazo)resorcinol;
    1,3-Benzenediol, 4-[(4-nitrophenyl)azo]-;

    CAS No. 74-39-5
    Molecular Formula C12H9N3O4
    Molecular Weight 259.21800
    PSA 111.00000
    LogP 3.94460

    Properties

    Appearance & Physical State dark red to brown crystalline powder
    Density 1.45 g/cm3
    Boiling Point 509.2ºC at 760 mmHg
    Melting Point 195-200ºC
    Refractive Index 1.665
    Stability Stable. Incompatible with strong oxidizing agents, strong bases.

    Safety Info

    RTECS VH2810000
    Safety Statements S26-S36
    HS Code 2927000090
    WGK Germany 3
    Risk Statements R36/38
    Hazard Codes Xi

    Synthesis Route

    4-Nitroaniline+resorcinol4-(4-nitrophenylazo)resorcinol
    4-Nitrobenzenediazonium chloride+resorcinol4-(4-nitrophenylazo)resorcinol
    benzene-1,2,4-triol+4-nitrophenylhydrazine4-(4-nitrophenylazo)resorcinol

    Precursor

    4-Nitroaniline
    4-nitrophenylhydrazine
    resorcinol
    4-Nitrobenzenediazonium chloride

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