Bacteriostatic Water
Sterile Water with 0.9% Benzyl Alcohol
Molecular Details
Overview
Bacteriostatic water is a sterile, non-pyrogenic preparation of distilled water containing 0.9% benzyl alcohol as a bacteriostatic preservative. It serves as the standard solvent for reconstituting lyophilized peptide powders in research applications, providing a chemically inert vehicle that does not introduce salts or other solutes that might interfere with peptide stability or biological assays. The benzyl alcohol inhibits bacterial growth for up to 28 days post-opening when used under aseptic technique.
Key Characteristics
- Composition: Sterile water for injection + 0.9% benzyl alcohol (w/v)
- pH range: 5.5–7.0 (neutral to slightly acidic)
- Preservative protection: Up to 28 days post-opening with aseptic technique
- Chemical inertness: Does not introduce ions that interfere with peptide assays
- Compatible with most synthetic peptides; exceptions include some vasopressin analogs and oxytocin
Storage & Handling
Store unopened vials at 15–30°C (room temperature), protected from freezing and excessive heat. Opened vials: refrigerate at 2–8°C and use within 28 days. Do not freeze. Use sterile needles and syringes; minimize air exposure.
For research purposes only. Not intended for human consumption. This profile summarizes published preclinical literature and does not constitute medical, clinical, or dosage guidance.