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Acetic water

Acetic water

+99% Purity Third-Party Tested COA Available

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Third-Party Tested by Janoshik Analytical

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Compound Information

Technical specifications


Molecular Profile

What Is Acetic Water?

TypeReconstitution Solvent (Acidified Diluent)
CAS Number64-19-7 (Acetic Acid) / 7732-18-5 (Water)
Composition0.6% Acetic Acid in Sterile Water
Approx. pH3.0 – 4.0
PreservativeNone (single-use format)
FormulaCH3COOH in H2O

Storage Requirements

Stability Information

Keep vial sealed and protected from direct light
Contains no preservative — intended for single-use draw
Do not use if the solution appears cloudy or discolored

Unopened Vial

Room temperature (15–25°C)

After Peptide Reconstitution

2–8°C


About Acetic Water

Acetic Water is a dilute acetic acid solution used as a reconstitution solvent for lyophilized peptides that dissolve poorly at neutral pH. Its mildly acidic environment improves the solubility of hydrophobic and basic peptides — including fragments prone to aggregation in plain water — giving researchers a clear, fully dissolved working solution. It is supplied preservative-free for single-use handling and is intended solely as a laboratory reagent. This product is for research and development purposes only and must be handled by qualified professionals. Not for human, therapeutic, or diagnostic use.


Research Highlights

Improved Peptide Solubility

The acidic pH keeps basic and hydrophobic peptides in solution where plain water leaves visible residue or cloudiness.

Reduced Aggregation

Helps limit self-association in sequences prone to clumping, supporting cleaner, more reproducible stock preparations.

Volatile & Removable

Acetic acid is volatile, so it can be removed by lyophilization — useful when a downstream assay requires a different buffer.

Consistent Working Stocks

A defined, standardized diluent reduces batch-to-batch variability when preparing stock concentrations across a study.

Preservative-Free

Contains no benzyl alcohol or other additives, avoiding interference in assays sensitive to preservative content.

Laboratory-Grade Preparation

Prepared from analytical-grade acetic acid and sterile water, filtered and sealed for consistent laboratory handling.

Product Specifications

Composition
0.6% Acetic Acid (v/v) in Sterile Water
Molecular Formula
CH3COOH in H2O
CAS Number
64-19-7 (Acetic Acid)
Approx. pH
3.0 – 4.0
Form
Clear liquid solution
Appearance
Colorless, clear, free of particulates
Preservative
None (single-use)
Storage
Room temperature; reconstituted peptide at 2–8°C

Research Studies

Frequently Asked Questions

What is Acetic Water used for?

It is a dilute acetic acid solution used as a reconstitution solvent for lyophilized peptides that do not fully dissolve in neutral water.

How does it differ from bacteriostatic water?

Bacteriostatic water contains a preservative and is pH-neutral. Acetic Water is preservative-free and mildly acidic, which improves solubility for peptides that resist dissolving at neutral pH.

Which peptides benefit from an acidic diluent?

Generally basic or hydrophobic sequences, and any peptide that appears cloudy or leaves undissolved residue when reconstituted in plain water.

Is this product approved for human use?

No. This product has not been evaluated by the FDA and is strictly intended for research and development purposes by qualified professionals only.

Acetic acid molecular structure

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