Research Guide · AA-BAC-2026-33W
BAC Water
Bacteriostatic Water for Injection, USP (0.9% Benzyl Alcohol)
CAS
7732-18-5
Mol. Weight
18.02 g/mol
Purity
USP Grade
Format
10mL Vial
Overview
Bacteriostatic Water for Injection, USP is the standard laboratory diluent for reconstituting lyophilized research peptides. The 0.9% benzyl alcohol preservative inhibits bacterial growth, enabling multi-dose withdrawal from a single vial.
Mechanism of Action
Not an active research compound — a sterile vehicle. The benzyl alcohol preservative maintains sterility across repeated needle punctures, which is what distinguishes it from sterile water for injection (single-use, no preservative).
Dosing-Study Summary
Standard laboratory practice
Volume per protocol
USP monograph specification: sterile, pyrogen-tested, 0.9% benzyl alcohol, multi-dose rated
Reconstitution guidance
Typically 1–2 mL per peptide vial
Direct the stream against the vial wall, never onto the lyophilized cake; swirl gently to dissolve
Doses shown are reported in cited preclinical / clinical literature for research reference only — not usage recommendations.
Storage & Handling
Store at controlled room temperature until first puncture; refrigerate at 2–8°C after first use and discard 28 days after initial puncture. Inspect for particulates before every draw. Use sterile technique throughout.
Citations
This guide summarizes published scientific literature for laboratory research reference. Alpha Amino compounds are for research use only — not for human or animal consumption. Nothing here constitutes medical or dosing advice.