مرجع مواد شیمیایی ایران
اطلاعات عمومی متیل پارابن
  • نام شیمیایی

    • متیل پارابن

    • Methylparaben

  • مترادف ها
    • Methyl 4-hydroxybenzoate; Methyl p-hydroxybenzoate; Methyl parahydroxybenzoate; Nipagin M; E218; Tegosept; Mycocten

  • CAS
    99-76-3
  • فرمول مولکولی
    C8H8O3
  • جرم مولکولی
    152/15
  • EINECS
    202-785-7
  • ICB Number
    ICB 5325
  • شکل و حالت فیزیکی
    پودر کریستالی سفید
  • نقطه ذوب
    125-128 °C
  • نقطه جوش
    275 °C
  • دانسیته
    1/46 g/cm3
  • نقطه اشتعال
    280 °C
  • شماره ثبت تجاری (RBN)
    509801
  • شماره مرک (Merck)
    14,6107
  • NIST Chemistry Reference
  • EPA Substance Registry System
  • مراجع MSDS
  • ارائه دهنده
    زبان
  • انگلیسی
  • Chemical Properties
    • white crystalline powder

  • Synthesis
    • The drug is esterified with p-hydroxybenzoic acid and methanol. The p-hydroxybenzoic acid was added to excess methanol to dissolve, stirring and adding concentrated sulfuric acid slowly. After heating and refluxing 10h, pour into the water to precipitate crystallization, then washed with water, sodium carbonate solution and water, finally obtain the crude product. Recrystallize from water or 25% ethanol to obtain finished product. The yield was 85%. Raw material consumption (kg/t): p-hydroxybenzoic acid 1200, methanol 1000.

  • Usage
    • It is used as preservative in foods, beverages and cosmetics.

  • Preparation products

    3-Cyano-4-hydroxybenzoic acid-->LCP polybenzoxazole liquid crystal-->4-(2-MORPHOLIN-4-YL-ETHOXY)-BENZOIC ACID-->4-ISOPROPOXYBENZOIC ACID

  • Raw materials

    Methanol-->4-Hydroxybenzoic acid