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/418/501/product-dating-information-06-25-mk.pdf
M188
Maleic anhydride
99%
Synonym(s):
2,5-Furandione
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
25 g | Available to ship TODAYfromMILWAUKEE | $54.00 |
1 kg | Available to ship TODAYfromMILWAUKEE | $78.10 |
5 kg | Available to ship TODAYfromMILWAUKEE | $103.00 |
25 kg | Available to ship TODAYfromMILWAUKEE | $877.00 |
About This Item
$54.00
Available to ship TODAYDetails
vapor density
3.4 (vs air)
Quality Segment
vapor pressure
0.16 mmHg ( 20 °C)
assay
99%
autoignition temp.
870 °F
expl. lim.
7.1 %
bp
200 °C (lit.)
mp
51-56 °C (lit.)
SMILES string
O=C1OC(=O)C=C1
InChI
1S/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H
InChI key
FPYJFEHAWHCUMM-UHFFFAOYSA-N
General description
The structure of maleic acid consists of four carbon molecules along with carboxylate groups on either ends, with a double bond between the central carbon atoms. The anhydride of maleic acid has five atoms in its cyclic molecule, the unsaturated bond undergoes free radical polymerization in the presence of an initiator.
Application
- In the grafting process of high-density polyethylene (HDPE) by the monomer microencapsulation technique, which enables the introduction of enhanced functionality and improved properties to the polymer for functional coatings, membranes, or surface treatments, adhesives, and coatings.
- In the functionalization of polylactic acid (PLA) and acts as a coupling agent in natural fiber biocomposites. The functionalization improves the compatibility and interfacial adhesion between PLA and natural fibers, leading to enhanced mechanical properties and expanded applications of the resulting biocomposite materials.
- Maleic anhydride may be used in the synthesis of unsaturated polyester resins and as a reactant in synthesizing important products such as agricultural chemicals, lubricant additives, and food acidulatents.
Physical form
1 of 1
This Item | |||
|---|---|---|---|
| description 99% | description puriss., ≥99.0% (NT) | description analytical standard | description ReagentPlus®, ≥99% (HPLC) |
| assay 99% | assay ≥99.0% (NT) | assay - | assay ≥99% (HPLC) |
| vapor density 3.4 (vs air) | vapor density 3.4 (vs air) | vapor density 3.4 (vs air) | vapor density 4.0 (at °C, vs air) |
| mp 51-56 °C (lit.) | mp 51-56 °C (lit.), 52-54 °C | mp 51-56 °C (lit.) | mp 130-135 °C (lit.) |
| bp 200 °C (lit.) | bp 200 °C (lit.) | bp 200 °C (lit.) | bp 157.8 °C/316.0 °F -at 997 hPa |
| vapor pressure 0.16 mmHg ( 20 °C) | vapor pressure 0.16 mmHg ( 20 °C) | vapor pressure 0.16 mmHg ( 20 °C) | vapor pressure ≤0.1 at hPa ( 20 °C) |
| autoignition temp. 870 °F | autoignition temp. 870 °F | autoignition temp. 870 °F | autoignition temp. - |
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signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1 - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1A - STOT RE 1 Inhalation
target_organs
Respiratory system
supp_hazards
Storage Class
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk
WGK 1
flash_point_f
217.4 °F - closed cup
flash_point_c
103 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
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How can I determine the shelf life / expiration / retest date of this product?
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Helpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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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Could you please provide the approx. particle size of the briquets?
1 answer-
These briquettes are shaped like a 'Charcoal' briquette with approximate dimensions of 32mm x 28mm x 12 mm.
Helpful?
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What use in ABS and PC
1 answer-
Please see the amended response. It is advised that applications for Product M188 be searched via literature search. The cited articles may assist in your literature search for Maleic anhydride uses with polycarbonate and acrylonitrile butadiene styrene.
https://doi.org/10.1007/s10965-021-02632-9)
https://doi.org/10.1016/j.matpr.2021.01.531
https://doi.org/10.1016/j.polymer.2004.07.022Helpful?
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