Description

Bacteriostatic Water (BAC Water)
Sterile Water with Benzyl Alcohol · 0.9% Preserved Diluent

Bacteriostatic Water is sterile, non-pyrogenic water formulated with 0.9% benzyl alcohol as a bacteriostatic preservative. It is intended solely for diluting or dissolving substances in laboratory research settings.
Unlike unpreserved sterile water, which is single-use once its seal is broken, the benzyl alcohol content inhibits the growth of most potentially contaminating microorganisms — allowing a single vial to be accessed repeatedly across a research protocol without compromising the integrity of the solution. This extended multi-use stability is why BAC Water is the standard diluent used to reconstitute lyophilized compounds in research workflows.
Benzyl alcohol is a well-characterized preservative with broad compatibility across research peptides and proteins. It has been used in investigational reconstitution protocols where a compound must remain in solution over a working period rather than being prepared fresh at each timepoint. Researchers should note that a small number of compounds are documented as sensitive to preserved diluents, and compatibility should be confirmed against the specific compound’s handling data before use.
Specifications
CAS Number7732-18-5 (Water) · 56-75-7 (Benzyl Alcohol)Molecular FormulaH₂O (Water) · C₇H₈O (Benzyl Alcohol)Molecular Weight18.02 g/mol (Water) · 108.14 g/mol (Benzyl Alcohol)SynonymsSterile Water with Benzyl Alcohol, BAC Water, Bacteriostatic Injection DiluentFormSterile aqueous solutionAmount10 mL / 30 mL per vialPreservative0.9% Benzyl AlcoholStorageStore at controlled room temperature (20–25°C). Do not freeze.CompatibilityCompatible with most peptide reconstitution protocols
Research Use Only
This product is intended for laboratory research use only. It is not a drug, food, or cosmetic, and it is not intended to diagnose, treat, cure, or prevent any disease. Not for human or veterinary use. This product is not approved by the FDA. Sale is restricted to qualified researchers and research institutions.