Malonic acid
Classification:
Product Description
Specification parameters
| 中文别名 | 缩苹果酸 |
|---|---|
| 英文名称 | propanedioic acid |
| 分子式 | C3H4O4 |
| 分子量 | 104.06 |
| 相对密度(水=1) | 1.63 |
| 熔点 | 135.6 |
| 溶解度 | 溶于水,溶于乙醇、乙醚 |
| 外观与性状 | 白色晶体 |
| CAS登记号 | 141-82-2 |
essential information
Malonic acid, also known as malic acid. Molecular formula HOOCCH2COOH. Calcium salts exist in the roots of sugar beets, and the scale deposited in the concentration tank of sugar beet production is called calcium malonate. Malonic acid is a colorless sheet-like crystal; Melting point 135.6 ℃, decomposition at 140 ℃, density 1.619 g/cm3 (16 ℃); Can dissolve in water, alcohol, and ether. Can dissolve in acetone and pyridine.
application area
Mainly used as a pharmaceutical intermediate, it is also used in fragrances, adhesives, resin additives, electroplating and polishing agents, etc. Used as a chelating agent and also in the preparation of barbiturates. Malonic acid is an intermediate of the fungicide rice distemper and also an intermediate of the plant growth regulator indole ester.
Malonic acid and its esters are mainly used in fragrances, adhesives, resin additives, pharmaceutical intermediates, electroplating and polishing agents, explosion control agents, and thermal welding fluxing additives. Used in the pharmaceutical industry for the production of luminal, barbiturates, vitamin B1, vitamin B2, vitamin B6, phenylbutazone, amino acids, etc. Malonic acid is used as a surface treatment agent for aluminum, and there is no pollution problem because only water and carbon dioxide are generated during heating decomposition. In this regard, it has significant advantages compared to acid based treatment agents such as formic acid used in the past.
Malonic acid is used as an additive in chemical plating and also as a polishing agent in electroplating.
Packaging, Storage, Transportation, and Safety
Storage precautions
Store in a cool and ventilated warehouse. Stay away from sources of fire and heat. It should be stored separately from oxidants, reducing agents, and alkalis, and avoid mixing storage. Equip with corresponding types and quantities of fire-fighting equipment. The storage area should be equipped with suitable materials to contain leaked materials.
Transportation precautions
When shipping, the packaging should be intact and the loading should be secure. During transportation, it is necessary to ensure that the container does not leak, collapse, fall, or be damaged. It is strictly prohibited to mix and transport with oxidants, reducing agents, alkalis, edible chemicals, etc. During transportation, it should be protected from direct sunlight, rain, and high temperatures. The vehicle should be thoroughly cleaned after transportation.
Operation precautions
Sealed operation with comprehensive ventilation. Operators must undergo specialized training and strictly adhere to operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety goggles, anti toxic work clothes, and rubber gloves. Keep away from sources of fire and heat, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Avoid generating dust. Avoid contact with oxidants, reducing agents, and alkalis. Handle with care during transportation to prevent damage to packaging and containers. Equip with corresponding types and quantities of fire-fighting equipment and emergency response equipment for leaks. Empty containers may contain residual harmful substances.