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188050

Sigma-Aldrich

Poly(ethylene-alt-maleic anhydride)

average Mw 100,000-500,000, powder

Synonym(s):

maleated copolymer, maleated polymer, maleic copolymer

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About This Item

CAS Number:
9006-26-2
MDL number:
MFCD00134015
UNSPSC Code:
12162002
NACRES:
NA.23
Pricing and availability is not currently available.

form

powder

mol wt

average Mw 100,000-500,000

transition temp

Tg 235 °C

SMILES string

O1C(=O)C=CC1=O.C=C

InChI

1S/C4H2O3.C2H4/c5-3-1-2-4(6)7-3;1-2/h1-2H;1-2H2

InChI key

YYXLGGIKSIZHSF-UHFFFAOYSA-N

Application

Viscosity modifier for solution, suspension or emulsion. Dispersing aid for insoluble solids.

Features and Benefits

  • Forms a gel in water. Films from aqueous or organic solutions have high tensile and cohesive strength.
  • Alternating copolymer of ethylene-maleic anhydride.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV7444
MKCW4711
MKCV5352
MKCS9503
MKCV0561

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J K Song et al.
Journal of microencapsulation, 24(1), 11-19 (2007-04-19)
This paper shows two types of microcapsules used for electrophoretic display. One is prepared by in-situ polymerization which is based on urea, melamine and formaldehyde and another by complex coacervation, which is composed of gelatin and gum Arabic. Microcapsules attract
C Minard-Basquin et al.
Nucleosides, nucleotides & nucleic acids, 20(4-7), 895-899 (2001-09-21)
(Polymer-oligonucleotide) conjugates were obtained via direct ON synthesis from the poly(ethylene-alt-maleic anhydride: PEMA) grafted onto glass bead surfaces. The effect of the ON number per polymer chain on binding was evaluated through Tm experiments. Results were correlated with ELOSA (Enzyme
E Baloğlu et al.
Farmaco (Societa chimica italiana : 1989), 58(5), 391-396 (2003-05-06)
Bioadhesive tablet formulations have been developed for mucosal application. Sixteen different bioadhesive tablet formulations were prepared and evaluated. Their bioadhesion to vaginal mucosa were studied by tensile testing method. The swelling behaviour of the tablets in three different solutions was
Sijing Xiong et al.
Archives of toxicology, 87(1), 99-109 (2012-08-14)
To uncover the size influence of TiO(2) nanoparticles on their potential toxicity, the cytotoxicity of different-sized TiO(2) nanoparticles with and without photoactivation was tested. It was demonstrated that without photoactivation, TiO(2) nanoparticles were inert up to 100 μg/ml. On the contrary
H Neumann et al.
Applied biochemistry and biotechnology, 11(3), 177-189 (1985-06-01)
Alkaline phosphatase, APase, (EC 3.1.31) from calf intestine, after shifting the equilibrium by effector molecules towards the dimeric form of the enzyme, was coupled (ratio 1:2, protein: copolymer) to a copolymer of ethylene and maleic anhydride, EMA. The water-soluble APase-EMA
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Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. what is the purity of this substance?

    1 answer

    1. Unfortunately, the purity of this product has not been determined.

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