echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Active Ingredient News > Drugs Articles > Pharmaceutical injection grade polyethylene glycol PEG400cas25322-68-3

    Pharmaceutical injection grade polyethylene glycol PEG400cas25322-68-3

    • Last Update: 2022-08-20
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
     Pharmaceutical injection grade polyethylene glycol PEG400cas25322-68-3 polyethylene oxide resin is a high molecular weight homopolymer obtained by heterogeneous catalyzed ring-opening polymerization of ethylene oxide
    .

    It can usually be divided into those with a relative molecular mass of 2 × 104 or more and tens of thousands or more.
    The former is called polyethylene glycol, and the latter is called polyethylene oxide
    .

    Polyethylene oxide has the properties of flocculation, thickening, slow release, lubrication, dispersion, retention, water retention, etc.
    In the industry, the product is non-toxic and non-irritating, and will not remain, deposit or breed volatiles during the production process of the product
    .

    As a papermaking additive, it can improve the retention rate of fillers and fine fibers, and is especially suitable as a dispersant for long fibers, which can shorten the beating time
    .

    [25322-68-3] This product is a mixture of polycondensation of ethylene oxide and water
    .

    The molecular formula is represented by H(OCH2CH2)nOH, where n represents the average number of oxyethylene groups
    .

    【Properties】This product is a colorless or almost colorless viscous liquid; slightly odorous
    .

    This product is easily soluble in water or ethanol
    .

    Relative density The relative density of this product (general rule 0601) should be 1.
    110 to 1.
    140
    .

    Viscosity The kinematic viscosity of this product (the first method of general rule 0633) should be 37~45mm2/s at 40°C (the inner diameter of the capillary is 1.
    2mm or a suitable inner diameter of the capillary)
    .

    [Identification] (1) Take 0.
    05g of this product, add 5ml of dilute hydrochloric acid and 1ml of barium chloride test solution, shake and filter; add 1ml of 10% phosphomolybdic acid solution to the filtrate to produce a yellow-green precipitate
    .

    (2) Take 0.
    1g of this product, put it in a test tube, add 0.
    1g of potassium thiocyanate and 0.
    1g of cobalt nitrate, after mixing, add 5ml of dichloromethane, the solution turns blue
    .

    Lactose Pharmaceutical Grade Excipients (2020 Pharmacopoeia) 500g/bottle 25kg/bag Aspartame Pharmaceutical Grade Excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Gum Arabic Pharmaceutical Grade Excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Bohm pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Chitosan pharmaceutical grade excipients (2020 Pharmacopoeia) 1kg/bag 25kg/barrel Propylene glycol pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel bran distillation Oil 1kg 25kg glyceryl monostearate (2020 Pharmacopoeia) pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel soybean lecithin pharmaceutical grade excipients (2020 Pharmacopoeia) 500g/bottle 25kg/barrel Sodium acetate pharmaceutical grade excipients (2020 Pharmacopoeia) 500g /bottle 25kg/barrel phenol pharmaceutical grade excipients (2020 Pharmacopoeia) 1kg/bottle 25kg/barrel
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.