Maleic Anhydride
Maleic Anhydride is an intermediate chemical, produced from oxidation of benzene using a special catalyst. Maleic Anhydride is a versatile chemical that is needed in almost all fields of the chemical industry. The use of Maleic Anhydride varies due to the structure of the di carboxylic acid group, double bond reactivity between alpha and beta positions. This chemical structure and the high reactivity of the Maleic Anhydride derivative make it possible to make various types of resins and also organic reagents for various chemical transformations.
Application
Maleic Anhydride is an important Organic Acid Anhydride. It is used in the manufacture of a wide range of products like Un-saturated Polyester Resins, Alkyd Resins, Lube Oil Additives, Paper Sizing Chemicals, Insecticides, and Fine Chemicals.
Description
Chemical formula: C4H2O3 Molecular Weight: 98.06 CAS-number: 108-31-6
Specification of Maleic Anhydride
| Item | Unit | Value | Test Method |
|---|---|---|---|
| Appearance | - | White Briquet or Pastil Type | Visual |
| Molten Color (APHA) | - | 20 Max. | JIS K 1359 |
| Purity (Total Acid) | wt% | 99.5 Min. | JIS K 1359 |
| Solidification Point | °C | 52.5 Min. | JIS K 1359 |
| Ash | wt% | 0.001 Max. | JIS K 1359 |
| Iron | ppm | 1 Max. | Absorption Spectrophotometry |
Packing
- Briquet Type: Net 25kg/500kg/600kg Bag
- Pastil Type: Net 25kg/500Kg Bag
- Molten Type: 20MT Tank Trailer
Processing Characteristics of PVC Resins
| Item | Unit | Value |
|---|---|---|
| Boiling Point | °C | 202 |
| Specific Gravity (at 70/70°C) | - | 1.3 |
| Heat of formation | kJ/mol | -470.41 |
| Heat of combustion | kJ/mol | -1.390 |
| Heat capacity | kJ/(kg.K) | 1.21 (Solid) 1.67 (Liquid) |
| Heat of vaporization | kJ/mol | 54.8 |
| Heat of hydrolysis | kJ/mol | -34.9 |
| Heat of neutralization | kJ/mol | 126.9 |
| Flash Point | °C/td> | 110 (Open Cup) 102 (Closed Cup) |
| Item | Unit | Value | |
|---|---|---|---|
| Solubility in solvent | Acetone (at 25°C Benzene (at 25°C o-xylene (at 25°C | g/100g/td> g/100g/td> g/100g/td> | 227 50 19.4 |
| Vapor Pressure | at 44.0°Cat 44.0°Cat 44.0°Cat 44.0°Cat 44.0°C | kPakPakPakPakPa | 0.130.672.713.353.3 |