OP Labs formerly Oxford PeptidesBatch manufactured to specificationStore at controlled room temperature unless otherwise specifiedSold for research purposes onlyContact us for Wholesale OrdersDownload COA here: Bacteriostatic_Water_COA.pdfPlease note: if you have a different Batch ID, please contact us for the latest COA.Bacteriostatic WaterSynonyms / Designations: Bacteriostatic Water for Injection (research use) Sterile Water with Benzyl AlcoholCAS Number: 7732-18-5 (water) 100-51-6 (benzyl alcohol component)Molecular Formula: H2O (with 0.9% benzyl alcohol, w/v)Molar Mass 18.02 g/mol (water)Composition: Sterile water for injection containing 0.9% benzyl alcohol as a bacteriostatic preservativeProduct Classification Sterile aqueous diluent; bacteriostatic solventPurity: Manufactured to pharmacopeial specification (USP/Ph. Eur. grade components)Appearance: Clear, colourless, sterile solutionPack Size: 10 mLStorage: Store in a cool dark place. Discard 30 DAYS after opening.Solubility: Fully miscible with water and aqueous buffersDescription & MechanismBacteriostatic Water is a sterile aqueous solution containing a low concentration of benzyl alcohol, formulated to inhibit microbial growth during repeated vial access. It is widely used in laboratory, pharmaceutical, and formulation research as a diluent for the reconstitution and dilution of injectable-grade compounds under controlled experimental conditions.In biochemical and cellular research systems, Bacteriostatic Water is employed to evaluate compound solubility, stability following reconstitution, and short-term storage behaviour. The presence of benzyl alcohol provides bacteriostatic activity by disrupting microbial cell membranes, thereby reducing contamination risk during multi-use experimental workflows.Applications in ResearchAs a standard diluent for peptide and protein reconstitutionPreparation of injectable-grade research compounds for in vitro or ex vivo studiesInvestigation of peptide and biologic stability following reconstitutionFormulation testing and solvent compatibility studiesMulti-use experimental workflows requiring bacteriostatic protectionSpecifications SummaryPurity: Manufactured to specificationAppearance: Clear, colourless sterile solutionSolvent Type: Bacteriostatic aqueous diluentPreservative: Benzyl alcohol 0.9% (w/v)Solubility: Fully miscible with water and aqueous buffersStorage: Controlled room temperaturePack Size: 10 mlHandling, Use & StabilityUse aseptic technique when accessing vial contentsAvoid contact with non-sterile surfacesDo not use if solution becomes cloudy or discolouredSeal vial promptly after use to maintain sterilityAvoid exposure to excessive heat or prolonged lightDo not freezePrecautions & NotesNot all peptides or biologics are compatible with benzyl alcohol; compatibility should be assessed experimentallyBuffer composition, compound sensitivity, and storage duration may influence stabilityNot suitable for neonatal or in vivo clinical useIntended strictly for laboratory research useReferencesEuropean Pharmacopoeia. Sterile Water and preserved preparations monographs.https://www.edqm.eu/en/european-pharmacopoeiaRowe R.C., Sheskey P.J., Quinn M.E. Handbook of Pharmaceutical Excipients. Pharmaceutical Press.https://www.pharmpress.com/product/9780857110275/handbook-of-pharmaceutical-excipientsTrissel L.A. Handbook on Injectable Drugs. American Society of Health-System Pharmacists.https://www.ashp.org/products-and-services/ashp-publications/handbook-on-injectable-drugsKeywords: Bacteriostatic Water, Sterile Water, Benzyl Alcohol Solution, Research Diluent, Peptide Reconstitution, Laboratory Solvent
