Maleic Acid
Specifications
| Item | Index |
| Appearance | White granules or crystalline powder |
| Assay(C4H4O4) % | 99.0~101.0 |
| State of solution | Clarification |
| Appearance of solution | Qualified |
| Heavy metals(Pb) mg/kg≤ | 10 |
| Iron(Fe) mg/kg≤ | 5 |
| Fumaric acid %≤ | 1.5 |
| Sulphated ash %≤ | 0.1 |
| Moisture %≤ | 2 |
Packing & Storage
| Packing | In 25kg bag |
| Storage | 20℃, 2 years. |
| Shipping | Room temperature in China; may vary elsewhere |
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Tel: 0086-25-52397805
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General Information
| Common Names | Maleic Acid | ||
| Structure |  | ||
| CAS No. | 110-16-7 | Boiling Point (℃) | 355.5±25.0 °C |
| Molecular Weight | 116.072 | Melting Point (℃) | 134-138ºC |
| Appearance | White powder | Vapor Specific Gravity | / |
| HS Code | 2917190090 | Flash Point (℃) | 183.0±19.7 °C |
| Solubility | Readily soluble in water and methanol | Autoignition Temperature (℃) | / |
| Safety Phrases | / | ||
| RIDADR | / | ||
| WGK Germany | / | ||
| Packaging Group | / | ||
| Hazard Class | / | ||
| SYMPTOMS | PREVENTION | FIRST AID | |
| Inhalation | Cough. Sore throat. | Use local exhaust or breathing protection. | Fresh air, rest. |
| Skin | Redness. Burning sensation. Itching. | Protective gloves. | Remove contaminated clothes. Rinse and then wash skin with water and soap. |
| Eyes | Redness. Pain. | Wear safety goggles. | First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. |
| Ingestion | Abdominal pain. Nausea. Vomiting. | Do not eat, drink, or smoke during work. Wash hands before eating. | Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention. |
Industrial production of maleic acid is under the catalysis of vanadium pentoxide, at 450 ~ 500℃ with air oxidation benzene, Mr. Maleic anhydride, the hydrolysis is obtained.
Frequently Asked Questions
The Use of Maleic Acid in the Food Industry
Maleic acid is mainly used in the manufacture of unsaturated polyester resins and compounds such as tartaric acid, fumaric acid, succinic acid, DL-malic acid, dyeing auxiliaries and oil preservatives. It is also widely used in medicine, pesticide, food and other aspects.
Maleic acid has become a new sour agent in the food and beverage industry. Adding appropriate amount of maleic acid to food and beverage can enhance the special fruit flavor and improve the taste. It is used in dairy products, meat products, baked products, pasta products, seasoning foods, etc.