Understanding CAS 7664-38-2: Key Facts Explained

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What is CAS 7664-38-2?

CAS 7664-38-2 refers to phosphoric acid, a clear, colorless, and syrupy liquid that is widely used in various industries. Its chemical formula is H₃PO₄, and it is an inorganic acid known for its acidic properties and is essential in numerous applications.

Properties of Phosphoric Acid

Phosphoric acid exhibits a variety of physical and chemical properties that make it suitable for industrial use:

• Density: 1.88 g/cm³
• Boiling Point: 158 °C (316 °F)
• Solubility: Highly soluble in water
• pH Level: Strongly acidic with a pH of around 1-2

Applications of Phosphoric Acid

Phosphoric acid is utilized in various sectors, including:

1. Food and Beverage Industry

In the food industry, phosphoric acid is often used as an acidulant in soft drinks and processed foods. It helps in maintaining flavor and preventing microbial growth.

2. Agriculture

It serves as a key ingredient in fertilizers, providing essential phosphorus that promotes plant growth.

3. Industrial Products

Phosphoric acid is widely used in manufacturing rust removers and cleaners, playing a critical role in surface preparation for coating and painting.

4. Dental and Medical Uses

In dentistry, it is used in tooth etching for bonding agents, as it helps to create a rough surface for better adhesion.

Safety and Handling

While phosphoric acid is a widely used compound, safety precautions are essential during its handling:

• Personal Protective Equipment (PPE): Always wear gloves and eye protection to avoid skin and eye contact.
• Storage: Store in a cool, dry place away from incompatible substances.
• First Aid Measures: In case of skin contact, rinse thoroughly with water. If ingested, seek medical attention immediately.

Environmental Impact

Phosphoric acid can pose environmental hazards if not managed properly:

• Runoff containing phosphoric acid may lead to water pollution and nutrient overload in aquatic systems.
• It can contribute to eutrophication, which causes harmful algal blooms affecting water quality and marine life.

Conclusion

Understanding CAS 7664-38-2 is crucial for industries that rely on phosphoric acid for various applications. Proper knowledge of its properties, uses, safety measures, and environmental impact can help mitigate risks associated with its handling and promote safe practices in its application.

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