مرجع مواد شیمیایی ایران
اطلاعات عمومی پارا فرمالدهید
  • نام شیمیایی

    • پارا فرمالدهید

    • Paraformaldehyde

  • مترادف ها
    • Polyoxymethylene

  • CAS
    30525-89-4
  • فرمول مولکولی
    OH(CH2O)nH (n = 8 - 100)
  • جرم مولکولی
    (30.03)n
  • EINECS
    200-001-8
  • ICB Number
    ICB 4358
پارا فرمالدهید
  • شکل و حالت فیزیکی
    پودر کریستالی سفید
  • نقطه ذوب
    120-170 °C
  • دانسیته
    1/46 g/cm3
  • فشار بخار
    <1/45 mm Hg ( 25 °C)
  • دانسیته بخار
    1/03 (vs air)
  • دمای نگهداری
    2-8 °C
  • شماره CAS
    30525-89-4
  • شماره ثبت تجاری (RBN)
    102769
  • شماره مرک (Merck)
    14,7025
  • مراجع MSDS
  • ارائه دهنده
    زبان
  • انگلیسی
  • انگلیسی
  • Chemical Properties
    • White solid

  • General Description
    • پارا فرمالدهید جامدی سفیدرنگ و محلول در بازها که نامحلول در الکل، اتر و آب است که به عنوان گندزدا، ضدقارچ و ماده ضدعفونی کننده دفع آفات و برای ساختن رزین ها به کار می رود.

    • A white solid with a light pungent odor. A linear polymer of formaldehyde of formula HO(CH2 O)xH where x averages about 30. Soluble in water when x is less than 12; higher polymers are not immediately soluble. Slow dissolution in water proceeds by means of hydrolysis to give fragments of lower x. Flammable, although may take some effort to ignite. Flash point 158°F. Used in fungicides, bactericides, and in the manufacture of adhesives. A hazard to the environment. Immediate steps should be taken to limit spread to the environment.

  • Air & Water Reactions
    • Flammable. Forms aqueous solution of formaldehyde, often quite slowly.

  • Reactivity Profile

    Paraformaldehyde may react violently with strong oxidizing agents (hydrogen peroxide, performic acid, perchloric acid in the presence of aniline, potassium permanganate, nitromethane). May react with bases (sodium hydroxide, potassium hydroxide, ammonia), and with nitrogen dioxide (explosive reaction around 180°C). Reacts with hydrochloric acid to form highly toxic bis(chloromethyl) ether. Polymerization reaction with phenol may develop sudden destructive pressure [Bretherick, 5th ed., 1995, p.168]. May generate flammable and/or toxic gases in combination with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Generates toxic formaldehyde gas when heated. Can react with air to give first peroxo acids, and ultimately formic acid. These reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). Incompatible with liquid oxygen.

  • Health Hazard

    Vapor or dust irritates eyes, mucous membranes, and skin; may cause dermatitis. Ingestion of solid or of a solution in water irritates mouth, throat, and stomach and may cause death.

  • Fire Hazard

    Behavior in Fire: Changes to formaldehyde gas, which is highly flammable.

  • Preparation products

    alpha-butyl-alpha-phenyl-1H-imidazole-1-propiononitrile -->2-(HYDROXYETHYL)-6-METHYLPYRIDINE-->Dimethoxymethane-->3-Methyl-2-buten-1-ol-->9,10-Bis(chloromethyl)anthracene-->4-Hydroxy-2-butanone-->2-(Trifluoromethyl)benzyl bromide-->BIS(CHLOROMETHYL)ETHER-->Naftifine-->METHYL 5-(CHLOROMETHYL)-2-FUROATE-->2,5-Dichlorobenzoic acid-->8-CHLOROMETHYL-7-METHOXY-3-METHYL FLAVONE-->7-Hydroxy-6-methoxy-3,4-dihydroisoquinoline-->6-METHOXY-2-OXO-2H-CHROMENE-3-CARBOXYLIC ACID-->Hexachlorophene-->6-Methoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride-->Trometamol-->5-Ethyl-2-pyridineethanol-->Fluorescent Brightener DCB-->2-(Methoxymethyl)-2-propenal-->1,3-Dioxolane-->Chloromethyl pivalate-->BUCLIZINE-->1-Chloromethyl naphthalene-->Propisochlor-->Tris(3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate-->4,4'-Bis(chloromethyl)-1,1'-biphenyl-->4-(CHLOROMETHYL)-3,5-DIMETHYLISOXAZOLE-->Oxyfedrine-->2-HYDROXY-5-METHYLISOPHTHALALDEHYDE-->4,4'-Methylenebis(N,N-dimethylaniline)-->4,4'-BIS(BROMOMETHYL)BIPHENYL-->crosslinking aent DTF-3-->Piperonyl butoxide-->3-DIMETHYLAMINOPROPIOPHENONE HYDROCHLORIDE-->Chloramben-->cationic-type polyacrylamide-->N-Benzyl-N-methylethanolamine-->4-CHLORO-2-BUTANONE-->1,3-Dioxan-5-ol

  • Raw materials

    Formaldehyde