مرجع مواد شیمیایی ایران
اطلاعات عمومی ترفتالیک اسید
  • نام شیمیایی

    • ترفتالیک اسید

    • Terephthalic acid

  • مترادف ها
    • Benzene-1,4-dicarboxylic acid ; para-Phthalic acid ; TPA ; PTA ; BDC

  • CAS
    100-21-0
  • فرمول مولکولی
    C8H6O4
  • جرم مولکولی
    166/13
  • ICB Number
    ICB 4922
  • شکل و حالت فیزیکی
    پودر سفید
  • نقطه ذوب
    300 °C
  • دانسیته
    1/51 g/cm3
  • فشار بخار
    <0/01 mm Hg ( 20 °C)
  • نقطه اشتعال
    260 °C
  • دمای نگهداری
    0-6 °C
  • حلالیت در آب
    0/0015 g/100 mL at 20°C
  • اسیدیته (pka)
    3/51, 4/82
  • شماره CAS
    100-21-0
  • شماره ثبت تجاری (RBN)
    1909333
  • شماره مرک (Merck)
    14,9162
  • Hazard Codes
  • Risk Statements
  • Safety Statements
  • RTECS
    WZ0875000
  • مراجع MSDS
  • ارائه دهنده
    زبان
  • انگلیسی
  • انگلیسی
  • Chemical Properties
    • white powder

  • General Description
    • White powder.

  • Air & Water Reactions
    • Insoluble in water.

  • Reactivity Profile

    Terephthalic acid is a carboxylic acid. Terephthalic acid donates hydrogen ions if a base is present to accept them. This "neutralization" generates substantial amounts of heat and produces water plus a salt. Insoluble in water but even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in Terephthalic acid to corrode or dissolve iron, steel, and aluminum parts and containers. May react with cyanide salts to generate gaseous hydrogen cyanide. Will react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by reaction with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. React with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. May initiate polymerization reactions; may catalyze (increase the rate of) chemical reactions.

  • Fire Hazard

    Flash point data for Terephthalic acid are not available. Terephthalic acid is probably combustible.

  • Preparation products

    Pigment Red 122-->Triethylene glycol dimethacrylate-->Unsaturated polyester resin-->DIMETHYL TEREPHTHALATE-->POLY(1,4-BUTYLENE TEREPHTHALATE)-->Terephthaloyl chloride-->3-Aminophthalhydrazide-->tussah silk fabric aftertreatment finishing agent-->POLY(ETHYLENE TEREPHTHALATE)-->Dioctyl terephthalate-->liquid crystalline heterocyclic polymer-->auxiliary chrome tanning agent

  • Raw materials

    Acetic acid glacial-->P-XYLENE-->Bromide-->Cobalt acetate-->Manganese triacetate dihydrate-->Paraldehyde-->MANGANESE(II) ACETATE-->1,1,2,2-Tetrabromoethane-->4-Formylbenzoic acid