Bacteriostatic Water
Price range: $11.00 through $30.00
0.9% Benzyl Alcohol Preserved Solvent · Multi-Dose Reconstitution Medium
Bacteriostatic Water for Injection (BWFI) is a sterile, non-pyrogenic aqueous solvent containing 0.9% (9 mg/mL) benzyl alcohol added as an antimicrobial preservative. Formulated specifically as a laboratory diluent, it facilitates the dissolution and stability of lyophilized synthetic peptides, proteins, and molecular reagents. The addition of benzyl alcohol inhibits bacterial growth and contamination in reconstituted solutions, allowing for repeated container access and extended secondary shelf life under refrigerated storage parameters (2–8°C).
Supplied at 10ml and 30ml.
Description
Overview
Bacteriostatic Water for Injection is a sterile, non-pyrogenic aqueous solution containing 0.9% benzyl alcohol (9 mg/mL) added as a bacteriostatic preservative. It serves as the standard multi-dose solvent for dissolving lyophilized research peptides and proteins.
The addition of benzyl alcohol inhibits bacterial growth in reconstituted vials, allowing for repeated container access over extended experimental periods while preserving reagent integrity under refrigerated storage (2–8°C).
Key Technical Specifications
| Composition | Sterile Water + 0.9% Benzyl Alcohol (w/v) |
|---|---|
| Preservative Formula | C₇H₈O (Benzyl Alcohol / Phenylmethanol) |
| Preservative CAS Number | 100-51-6 |
| Container Format | 30 mL Multi-Dose Glass Vial |
| pH Range | 4.5–7.0 |
| Storage Parameters | Refrigerate at 2–8°C (Do not freeze; protect from light) |
| Primary Class | Laboratory Reconstitution Solvent |
Chemical Properties & Antimicrobial Dynamics
1. Antimicrobial Action Mechanism
Benzyl alcohol functions by altering bacterial cell membrane permeability and inhibiting vital cellular enzymes, preventing bacterial proliferation without causing immediate cell rupture or interfering with stable peptide structures.
2. Reconstitution Utility
- Multi-Dose Flexibility: Inhibits microbial growth for up to 28 days following the initial vial access.
- Peptide Stability: The controlled pH environment prevents premature hydrolysis or degradation of sensitive peptide bonds during liquid storage.
Storage Note: Store between 2°C and 8°C. Avoid exposure to freezing conditions, which may disrupt container seals or lead to phase separation of the preservative solution.
For laboratory research, educational, and analytical reference only. Strictly not for human or veterinary use.