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### 1. User Concerns and Title.
When users search for "Understanding CAS 7664-38-2: Key Facts and Uses," they are likely concerned about several key aspects:
- **What is CAS 7664-38-2?**: Basic identity and characteristics of the substance.
- **Chemical Composition and Properties**: Physical and chemical properties.
- **Uses and Applications**: Common uses in various industries.
- **Safety Information**: Toxicology, hazards, and safety precautions.
- **Regulatory Information**: Relevant regulations and compliance information.
**Suggested Question Title**: "What is CAS 7664-38-2 and Its Uses?".
### 2. Article: What is CAS 7664-38-2 and Its Uses?
CAS 7664-38-2 refers to phosphoric acid, a colorless, odorless, and viscous liquid that plays a pivotal role across various industries. Known for its versatility and effectiveness, phosphoric acid serves both as a key ingredient in numerous chemical processes and as an essential additive in various products. Understanding its properties, uses, and safety precautions is vital for anyone involved in chemical manufacturing, agriculture, or food production.
#### What is Phosphoric Acid (CAS 7664-38-2)?
Phosphoric acid is an inorganic acid represented by the molecular formula H₃PO₄. It consists of three hydrogen ions, one phosphorus ion, and four oxygen ions, making it a triprotic acid. This acid is typically found in three forms: food-grade, which is safe for consumption; technical-grade, which is used in industrial applications; and pharmaceutical-grade, which is utilized in medical and laboratory settings.
Phosphoric acid is known for its ability to act as a strong acid, yet it is less corrosive than hydrochloric or sulfuric acids, which makes it safer to handle. It is highly soluble in water and exhibits low volatility, ensuring stability in various conditions.
#### Key Uses of Phosphoric Acid.
1. **Fertilizers**: One of the most prominent applications of phosphoric acid is in the production of fertilizers. It is a crucial nutrient that aids crop growth, making it an essential ingredient in various formulations, including superphosphate fertilizers.
2. **Food Industry**: In the food and beverage sector, phosphoric acid is commonly used as an acidity regulator and flavor enhancer. It can be found in carbonated beverages, processed foods, and dairy products, where it contributes to a tangy taste and adjusts the pH.
3. **Industrial Applications**: Phosphoric acid is employed in various industrial processes. It serves as a cleaning agent, rust remover, and metal treatment, especially in the production of steel. Its ability to etch surfaces makes it valuable in preparing metals for coating and painting.
4. **Pharmaceuticals**: In the pharmaceutical industry, phosphoric acid is utilized in the formulation of medicines and dental products. It is often used in dental etching gels to prepare enamel for bonding procedures.
5. **Water Treatment**: Phosphoric acid plays a significant role in water treatment processes, aiding in the removal of calcium and magnesium, which help in preventing scaling.
#### Safety Information and Handling.
While phosphoric acid has many beneficial uses, understanding its safety is crucial. It is classified as a corrosive substance, and appropriate safety measures should be adhered to when handling it. Users should wear suitable personal protective equipment (PPE), including gloves, goggles, and aprons, to prevent skin or eye contact.
Exposure to phosphoric acid can lead to irritation of the skin, eyes, and respiratory tract. In case of accidental spillage, it is essential to neutralize it with a base and avoid direct contact with water, as it can cause splattering.
#### Regulatory Information.
Phosphoric acid is regulated by various environmental and health agencies worldwide. In the United States, the Environmental Protection Agency (EPA) maintains strict guidelines for its use and disposal. Businesses utilizing phosphoric acid must comply with these regulations to minimize environmental impact and ensure safety.
#### Conclusion.
Phosphoric acid (CAS 7664-38-2) demonstrates an impressive range of applications across different sectors, from agriculture to food production and industrial processes. Understanding its properties, uses, and safety precautions is essential for individuals and businesses engaged with this vital compound. Whether you’re managing agricultural tasks, concocting food products, or involved in industrial processes, knowledge about phosphoric acid is imperative for safe and effective utilization.
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