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Download COA here: Sterile_Water_COA.pdf
Please note: if you have a different Batch ID, please contact us for the latest COA.

Sterile Water

Synonyms / Designations: Sterile Water for Injection, Purified Sterile Water
CAS Number: 7732-18-5
Molecular Formula: H₂O
Molar Mass: 18.02 g/mol
Chemical Type: Highly purified, sterile solvent
Purity: Meets pharmacopeial sterility and endotoxin specifications
Appearance: Clear, colourless liquid
Pack Size: Various (e.g. 10 mL, 30 mL, 100 mL)
Storage: Store at controlled room temperature; protect from contamination
Solubility: Miscible with aqueous-compatible compounds

Description & Mechanism

Sterile Water for Injection is highly purified water that has been sterilised and prepared under controlled conditions to meet strict pharmacopeial standards. It contains no antimicrobial agents, buffers, or additives and is intended for use as a solvent or diluent in laboratory and research environments.

In experimental and biochemical research systems, sterile water is commonly used for peptide and compound reconstitution, preparation of aqueous solutions, dilution of reagents, and control formulations. Its absence of preservatives makes it suitable for studies where additive-free solvent systems are required.

Applications in Research

• As a solvent for reconstitution of peptides, proteins, and small molecules
• Preparation of aqueous buffers and experimental solutions
• Dilution of reagents in biochemical and cellular assays
• Use as a control solvent in laboratory research systems

Specifications Summary

Purity: Sterile, endotoxin-controlled
Appearance: Clear, colourless liquid
Chemical Type: Purified sterile water
Molecular Weight: 18.02 g/mol
Solubility: Fully miscible with water-soluble substances
Storage: Controlled room temperature, protected from contamination
Pack Size: Various

Handling, Use & Stability

• Use aseptic technique when handling to prevent contamination.
• Once opened, use promptly according to laboratory protocols.
• Do not reuse containers once sterility is compromised.
• Avoid exposure to environmental contaminants.
• Discard unused portions according to laboratory waste guidelines.

Precautions & Notes

• Contains no antimicrobial preservative.
• Not intended for human or veterinary administration.
• Sterility may be compromised once container is opened.
• Use appropriate controls when preparing experimental solutions.
• Intended strictly for laboratory research use.

References

United States Pharmacopeia (USP). Water for Injection monograph (USP–NF).
https://www.uspnf.com/

European Pharmacopoeia. Sterile Water for Injection monograph.
https://www.edqm.eu/en/european-pharmacopoeia-ph-eur-9th-edition

World Health Organization. Water quality for pharmaceutical use.
https://www.who.int/publications/i/item/WHO-TRS-970-annex-2

Keywords: Sterile Water, Water for Injection, WFI, Laboratory Solvent, Research Grade Water