Description
Lactic acid is a preservative that helps you keep food products for longer periods. This chemical is also used in plastic synthesizing, the textile industry, lathering, and pharmaceuticals. You should pay attention to safety tips while working on this chemical in the laboratory. In this article, we will explain the properties and applications of this substance in detail.
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Chemical and physical properties
Lactic acid looks like a colorless liquid without any detectable odor. Some of the most important properties are listed below:
| Formula | C3H6O3 |
| Molecular formula | 90.08 g/mol |
| CAS number | 50-21-5 |
| Boiling point | 122 °C at 15 mm Hg |
| Melting point | 16.8 °C |
| Flash point | 113 °C |
| Density | 1.200-1.209 |
Lactic acid is freely soluble in water and glycerol. The solubility of this substance in water is about 1000000mg/L.
Lactic acid uses
This acid is widely used in the food industry to reduce the pH level and increase the shelf life of the product. Since bacteria and harmful microorganisms cannot live in an acidic environment, we can increase the shelf life by adding this acid to the food. Foods listed below naturally contain lactic acid:
- Cheese
- Beans
- Pickled meats
- Bread
Other uses of this acid are as follows:
- Plastic synthesizing
- Textile industry
- Lathering
- Pharmaceutical and healing brain injuries
Lactic acid MSDS
You should pay attention to wearing a laboratory uniform and gloves because if it contacts your skin, it can irritate. Also, you should wear safety glasses because this chemical should not contact with your eyes, if it does, it can cause serious eye damage. If accidentally this chemical contacts your eyes and skin, you should call the emergency and pay attention to these important points: In the case that this chemical contacts you it is better to wash it with a lot of water. Remember that you should continue washing your eyes for half an hour and In the case that this chemical contacts your skin, you should wash the area with water.
Is lactic acid good for the body?
Yes, this chemical has some health benefits for your body. For example, it can help you improve your immune system because this chemical can help your body to absorb more vitamins. So, these vitamins help our bodies to keep healthy.
Is lactic acid vegan?
Yes. This food additive is vegan. However, some manufacturers may produce it with non-vegan sources. so if you are vegan it is better to ask them before buying the products that contain this additive.
The bottom line
Lactic acid is a chemical vegan food additive that is used to preserve food products and help them last for longer periods. It also helps you to improve your immune system and stay healthier. However, the application of this chemical is not all about food preservation. It is used in the pharmaceutical and textile industries as well. So if you are using this chemical in its pure form you should pay attention to the safety tips. Because the pure form of this acid should not contact your eye and skin.
Frequently asked questions
What is lactic acid used for?
It is widely used in preserving food products and making them last for longer times. It is also used in pharmaceutical industries.
Is lactic acid good for the skin?
Yes, it is used in many cosmetic and skin care products. because of its acidic nature, it removes the dead layer of skin.
Is lactic acid AHA?
Yes, this acid is considered as alpha hydroxy acids which is used in many cosmetic and skin care products.
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