Benzyl alcohol is a commonly used preservative in bacteriostatic water, with a molecular formula of C7H8O and a molar mass of 108.14 g/mol. As a laboratory reference compound, its chemical stability and degradation pathways are crucial for maintaining the integrity of research solutions. When stored in bacteriostatic water at a concentration of 0.9%, benzyl alcohol has been shown to remain stable for up to 6 months at 2-8°C, with a purity of ≥98% as confirmed by HPLC analysis. However, its stability can be affected by various laboratory storage conditions, including temperature, light, and pH, which can impact its effectiveness as a preservative and the overall quality of the research solution.
Chemical Properties and Classification
Benzyl alcohol is classified as a aromatic alcohol, with a CAS number of 100-51-6. Its chemical structure consists of a benzene ring attached to a hydroxymethyl group, which is responsible for its preservative properties. In bacteriostatic water, benzyl alcohol acts as a bacteriostatic agent, inhibiting the growth of microorganisms and maintaining the sterility of the solution. Its chemical properties, such as its solubility and boiling point, are critical for its use in laboratory research applications.
Molecular and Structural Properties
The molecular structure of benzyl alcohol is characterized by a planar, aromatic ring with a hydroxyl group attached to the benzene ring. Its molecular weight and dimensions are crucial for understanding its interactions with other molecules and its behavior in solution. The structural properties of benzyl alcohol, such as its crystal structure and spectroscopic characteristics, can provide valuable information about its chemical stability and degradation pathways.
Physical Characteristics and Storage Conditions
Benzyl alcohol in bacteriostatic water is a clear, colorless solution with a characteristic odor. Its physical characteristics, such as its density and viscosity, can affect its handling and storage in the laboratory. The storage conditions of benzyl alcohol in bacteriostatic water, including temperature, light, and pH, can impact its chemical stability and degradation pathways. For example, storage at high temperatures or exposure to light can accelerate the degradation of benzyl alcohol, while storage at low temperatures or in the dark can help maintain its stability.
Purity and Quality Verification
The purity and quality of benzyl alcohol in bacteriostatic water are critical for its use in laboratory research applications. HPLC analysis is commonly used to verify the purity of benzyl alcohol, with a typical purity of ≥98% required for research-grade material. Mass spectrometry can also be used to confirm the identity and purity of benzyl alcohol. A per-lot Certificate of Analysis, such as those provided by research-grade compound suppliers, can provide assurance of the quality and purity of the material.
Selecting and Verifying a Research-Grade Source
When selecting a research-grade source of benzyl alcohol in bacteriostatic water, it is essential to verify the quality and purity of the material. A reputable supplier, such as Alpha Amino, should provide a per-lot Certificate of Analysis and transparent lot numbers. The material should be sourced from a US-based supplier to ensure compliance with regulatory requirements. Additionally, the supplier should provide detailed information about the chemical properties, molecular structure, and physical characteristics of the material, as well as its handling and storage requirements.
Preparation of Research Stock Solutions
The preparation of research stock solutions of benzyl alcohol in bacteriostatic water requires careful attention to aseptic laboratory technique and sterile transfer procedures. The solution should be prepared in a laminar flow hood or other sterile environment, using sterile equipment and pipettes. The concentration of benzyl alcohol in the solution should be verified by HPLC analysis or other suitable method, and the solution should be stored in a sterile, airtight container at the recommended storage temperature.
Frequently asked questions
What is the recommended storage temperature for benzyl alcohol in bacteriostatic water?
The recommended storage temperature for benzyl alcohol in bacteriostatic water is 2-8°C, which helps maintain the chemical stability and purity of the solution. Storage at high temperatures or exposure to light can accelerate the degradation of benzyl alcohol, while storage at low temperatures or in the dark can help maintain its stability.
How can I verify the purity and quality of benzyl alcohol in bacteriostatic water?
The purity and quality of benzyl alcohol in bacteriostatic water can be verified by HPLC analysis or mass spectrometry, with a typical purity of ≥98% required for research-grade material. A per-lot Certificate of Analysis, such as those provided by research-grade compound suppliers, can provide assurance of the quality and purity of the material.
What are the chemical properties of benzyl alcohol that make it useful as a preservative in bacteriostatic water?
Benzyl alcohol is classified as a aromatic alcohol, with a CAS number of 100-51-6. Its chemical structure consists of a benzene ring attached to a hydroxymethyl group, which is responsible for its preservative properties. Its chemical properties, such as its solubility and boiling point, are critical for its use in laboratory research applications.
How can I select a reputable supplier of research-grade benzyl alcohol in bacteriostatic water?
When selecting a research-grade source of benzyl alcohol in bacteriostatic water, it is essential to verify the quality and purity of the material. A reputable supplier, such as Alpha Amino, should provide a per-lot Certificate of Analysis and transparent lot numbers. The material should be sourced from a US-based supplier to ensure compliance with regulatory requirements.
What are the handling and storage requirements for benzyl alcohol in bacteriostatic water?
Benzyl alcohol in bacteriostatic water should be handled and stored in a sterile environment, using sterile equipment and pipettes. The solution should be stored in a sterile, airtight container at the recommended storage temperature of 2-8°C, and protected from light and moisture.
Alpha Amino products are sold strictly for laboratory and research use only and are not intended for human or veterinary use, diagnosis, treatment, or consumption.
