| Customization: | Available |
|---|---|
| CAS No.: | 108-31-6 |
| Formula: | C4H2O3 |
|
Still deciding? Get samples of US$ 80/kg
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Maleic anhydride is colorless crystal with strong pungent smell. Its freezing point is 52.8 ºC, boiling point is 202 ºC, and it is easy to sublimate. It is mainly prepared by oxidation of n-butane or butene in benzene or C4 fraction. It is the raw material for unsaturated polyester production and organic synthesis.
Product nature
Colorless orthogonal acicular crystal or white crystalline powder. Soluble in water, acetone, benzene, chloroform and other organic solvents. Solubility in the following solvents at 25 ºC (gloog): acetone 227, ethyl acetate 112, chloroform 52.5 I benzene 50 I toluene 23.4; O-xylene 19.4; Carbon tetrachloride 0 60; Petroleum ether 0.25. Dissolve in alcohol to form ester. Soluble in dioxane. Sublimation by heat. In case of high heat, open fire or contact with oxidant, it may cause combustion. Corrosive. Slowly hydrolyze in cold water to form maleic acid. Contact with strong oxidants can cause combustion and explosion. If the temperature exceeds 66 ºC, polymerization will occur in contact with amines or alkali metals.
| Molecular weight | 98.0581 |
| Density | 1.48 |
| Melting point | 52-55ºC |
| Boiling point | 200 °C (lit.) |
| Flash point | 218 °F |
| Water solubility | 79 g/100 mL (25ºC) |
| Vapor pressure | 0.16 mm Hg ( 20 °C) |
| Test Item | Requirement | Results |
| Appearance | White, slightly yellow blocky or flaky crystals | White spherical crystal |
| Crystallization point,ºC | ≥52.0 | 52.55 |
| Meltchroma (platinum-cobalt number) | ≤50 | 25 |
| Mass fraction,% | ≥99.0 | 99.53 |
| Residue on ignition | ≤0.005 | 0.0006 |
| Mass fraction of Fe (µg/g) | - | / |
Packed in lined plastic bags and covered with woven bags, with a net weight of 25kg and 50kg;
It can also be packed in lined plastic bags and external iron barrels or wooden barrels, with a net
weight of 50kg.
Q1: Can I get samples?
A: Yes, we can supply free sample, you pay for the freight charge only.
Q2: How to pay?
A: PI will be sent firstly after our aligned products specification. Payment by Paypal , T/T, Western Union,LC, are ok.
Q3: How is your MOQ?
A: Normally speaking, our MOQ is 1kg. But we can also accept less quantity such as 100g on the condition that sample charge is100% paid.
Q4: How can you guarantee the quality of your products ?
1. Our staff are all experienced in chemical products or related major background, they are well trained before quotation.
2. Free sample or pre-shipment sample are available for our new cooperation before you place commercial order. We are sure the same specification commercial products as sample to customers
3. Third Party Inspection like SGS can be arranged according to your requirement before shipping.
4. On-Spot QC in our APPROVED associated production bases with necessary certification like GMP, ISO etc.
Q5: Do you have any other chemicals?
A: Yes, We can provide other chemicals such as Calcium Formate,Sodium Formate,Phthalic Anhydride,Maliec Anhydride ,Propylene Glycol and others ....
Q6: If you still have questions, contact with us ~
){kind=link}