Bacteriostatic water

Description

Product Specifications

Form: Clear aqueous solution

Volume: Add the product-specific vial volume

Compound Classification: Preserved aqueous research formulation

Common Composition: Water with 0.9% benzyl alcohol, equivalent to 9 mg/mL, where confirmed by the specific product label

Water Content: Approximately 99.1% for a formulation containing 0.9% benzyl alcohol

Preservative: Benzyl alcohol

Peptide Length: Not applicable

Peptide Sequence: Not applicable

Molecular Formula: Not applicable as a single value because Bacteriostatic Water is a multi-component solution

Molecular Weight: Not applicable as a single value

CAS Number: No single CAS number applies to the complete formulation

Appearance: Clear, colorless aqueous solution

Intended Use: Laboratory research, analytical preparation, and research-material dilution applications only

Current DailyMed labeling for Bacteriostatic Water for Injection documents preserved aqueous formulations containing 0.9% (9 mg/mL) or, in some presentations, 1.1% (11 mg/mL) benzyl alcohol. Therefore, verify the exact concentration against the individual product label rather than infer it solely from the product name.

Representative Component Information

Water

Chemical Formula: H₂O

Molecular Weight: Approximately 18.015 g/mol

CAS Number: 7732-18-5

PubChem confirms H₂O, molecular weight 18.015 g/mol, and CAS 7732-18-5 for water.

Benzyl Alcohol

Chemical Formula: C₇H₈O

Alternative Formula Representation: C₆H₅CH₂OH

Molecular Weight: Approximately 108.14 g/mol

CAS Number: 100-51-6

Typical Concentration: 0.9% or 9 mg/mL in commonly supplied bacteriostatic water formulations

PubChem confirms the molecular formula, molecular weight, and CAS number of benzyl alcohol.

Research Applications

Preparation of preserved aqueous research formulations

Controlled dilution of compatible laboratory research materials

Analytical formulation and solution-preparation studies

Evaluation of solubility under defined aqueous conditions

Compatibility assessment of research materials in preserved aqueous vehicles

Comparative analysis of preserved and non-preserved aqueous formulations

Evaluation of solution clarity and formulation integrity

Stability studies under defined temperature and storage conditions

Batch-to-batch assessment of preservative concentration and formulation characteristics

Quality Documentation

A batch-specific Certificate of Analysis and applicable manufacturing documentation should be available for each lot. Verify benzyl alcohol concentration, water specification, sterility status where claimed, endotoxin or pyrogen specifications where applicable, pH, vial volume, lot number, and formulation details against the records supplied with the individual product.

The term “Bacteriostatic Water” does not by itself establish that a specific research product meets USP requirements or is sterile or nonpyrogenic. Those attributes should only be stated when supported by the manufacturer’s labeling and batch-specific documentation.

Official DailyMed labeling for regulated Bacteriostatic Water for Injection, USP describes sterile, nonpyrogenic preparations and reports a typical pH of 5.7 with a range of 4.5 to 7.0, but these specifications should not automatically be applied to an independently manufactured research-use product.

For Laboratory Research Use Only

This product is intended exclusively for controlled laboratory and analytical research. Not for human or veterinary use. Not for diagnostic, therapeutic, clinical, cosmetic, or household applications.