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Product Name:Maleic anhydride, analytical grade
CAS:108-31-6
Purity:99.5% Package:2.5KG,500G |
| Company Name: | Meryer (Shanghai) Chemical Technology Co., Ltd. |
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| Products Intro: |
Product Name:Maleic anhydride
CAS:108-31-6
Purity:99.5% Package:500g;1kg Remarks:AAA125346 |
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| Products Intro: |
Product Name:Maleic anhydride
CAS:108-31-6
Purity:AR Package:500g |
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| Products Intro: |
Product Name:Maleic anhydride, 98+%
CAS:108-31-6
Package:250g Remarks:A12178 |
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| | Maleic anhydride Basic information |
| | Maleic anhydride Chemical Properties |
| mp | 51-56 °C(lit.)
| | bp | 200 °C(lit.)
| | density | 1.48 | | vapor density | 3.4 (vs air)
| | vapor pressure | 0.16 mm Hg ( 20 °C)
| | Fp | 218 °F
| | storage temp. | Store at RT. | | form | powder
| | Water Solubility | 79 g/100 mL (25 ºC) | | Sensitive | Moisture Sensitive | | Merck | 14,5704 | | BRN | 106909 | | Stability: | Stable. Combustible. Incompatible with water, strong oxidizing agents, alkali metals, strong bases, amines, most common metals, polymerization catalysts and accelerators. | | CAS DataBase Reference | 108-31-6(CAS DataBase Reference) | | NIST Chemistry Reference | 2,5-Furandione(108-31-6) | | EPA Substance Registry System | 2,5-Furandione(108-31-6) |
| | Maleic anhydride Usage And Synthesis |
| Chemical Properties | White solid | | Usage | Maleic Anhydride is heterocyclic compound used in the manufacture of unsaturated polyester resins. Maleic Anhydride has a wide range of other applications; it is used in synthetic tensides, insecticides, herbicides and fungicides. | | General Description | Colorless crystalline needles, flakes, pellets, rods, briquettes, lumps or a fused mass. Melts at 113°F. Shipped both as a solid and in the molten state. Vapors, fumes and dusts strong irritate the eyes, skin and mucous membranes. Flash point 218°F. Autoignition temperature 890°F. Used to make paints and plastics and other chemicals. | | Air & Water Reactions | Soluble in water. Reacts slowly with water to form maleic acid and heat. | | Reactivity Profile | Maleic anhydride react vigorously on contact with oxidizing materials. Reacts exothermically with water or steam. Undergoes violent exothermic decomposition reactions, producing carbon dioxide, in the presence of strong bases (sodium hydroxide, potassium hydroxide, calcium hydroxide), alkali metals (lithium, sodium, potassium), aliphatic amines (dimethylamine, trimethylamine), aromatic amines (pyridine, quinoline) at temperatures above 150° C [Vogler, C. A. et al., J. Chem. Eng. Data, 1963, 8, p. 620]. A 0.1% solution of pyridine (or other tertiary amine) in Maleic anhydride at 185°C gives an exothermic decomposition with rapid evolution of gas [Chem Eng. News 42(8); 41 1964]. Maleic anhydride is known as an excellent dienophile in the Diels-Alder reaction to produce phthalate ester derivatives. These reactions can be extremely violent, as in the case of 1-methylsilacyclopentadiene [J. Organomet., Chem., 1979, 179, c19]. Maleic anhydride undergoes a potentially explosive exothermic Diels-Alder reaction with 1-methylsilacyclopenta-2,4-diene at 150C [Barton, T. J., J. Organomet. Chem., 1979, 179, C19], and is considered an excellent dieneophile for Diels-alder reactions [Felthouse, Timothy R. et al. "Maleic anhydride , Maleic Acid, and Fumaric Acid." Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley & Sons, Inc. 2005]. | | Health Hazard | Inhalation causes coughing, sneezing, throat irritation. Skin contact causes irritation and redness. Vapors cause severe eye irritation; photophobia and double vision may occur. | | Fire Hazard | Behavior in Fire: When heated above 300°F in the presence of various materials may generate heat and carbon dioxide. Will explode if confined. |
| | Maleic anhydride Preparation Products And Raw materials |
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