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16% Formaldehyde, Methanol-Free
Buffers & Dyes

16% Formaldehyde, Methanol-Free #12606

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Chemical structure of formaldehyde.

Product Usage Information

Final working concentrations can vary depending on the application, but is always prepared fresh by diluting in 1X PBS just prior to use. Leftover diluted material should be discarded.

This material and its container must be disposed of as hazardous waste.

Wear personal protective equipment. Ensure adequate ventilation. Do not handle until all safety precautions have been read and understood.

Safety Information: Formaldehyde has been classified by the International Agency for Research on Cancer (IARC) as a Known Human Carcinogen (Group 1). It is suspected of causing genetic defects. If exposed or concerned, get medical advice. See Safety Data Sheet (SDS).

Recommended Formaldehyde Fixative Concentrations:

Immunofluorescence (IF-IC and IF-F): 4%

Flow Cytometry: 2-4%

Chromatin IP: 1%


Store at room temperature. Each vial is stable for twelve months when left unopened or when material is extracted with a needle and syringe. Use within one month once opened.

Product Description

Premium 16% (w/v) Formaldehyde from Cell Signaling Technology is used as a fixative agent for fluorescent immunocytochemical and flow cytometry assays. It is methanol-free, prepared from high quality paraformaldehyde, and packaged under an inert atmosphere of nitrogen.

Each 10 ml solution is supplied in an amber glass vial with two access points, offering distinct advantages over pre-scored ampules. The screw cap allows for easy access to large volumes if necessary. To extend the product's shelf life, small volumes should be extracted by piercing the silicone top with a needle and syringe.
MW (kDa) 30.03 g/mol
Purity 16%
Molecular Formula CH2O

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

For Research Use Only. Not for Use in Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
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To Purchase # 12606
Cat. # Size Qty. Price
50 ml  (5 x 10 ml)