About Methenamine

In February 2002, Vesta Pharmaceuticals received the full product transfer of Methenamine for Timed Burning Tablets from Eli Lilly and Company. Please see attached letter from Eli Lilly (PDF, 107kb).

There are a number of consensus standards and government organizations that develop flammability testing standards. These organizations are:

  • American Society for Testing and Materials (ASTM) astm.org
  • International Organization for Standardization iso.org
  • Consumer Product Safety Commission (CPSC) cpsc.gov
  • American Association of Textile Chemists & Colorists. (AATCC) aatcc.org

Methenamine for Timed Burning Tablets are used by our customers to meet these standards.
 For Industrial Use Only. Not for Internal Use.

Product Specifications


White, 1/4 inch round, beveled, compressed tablet. For industrial use only. Not for internal use.


Bottle of 100 tablets

Expiration Period:

Four (4) years

Weight per Tablet:

149 mg (144 mg - 154 mg)

Burning Time:

130 sec. (117 sec. - 143 sec.) under standard conditions (metal burn plate at room temp. with no wind interference)

Safety Data Sheet (PDF, 10kb)

This product is certified “Methenamine for Timed Burning” as detailed below and has been evaluated and found to be in compliance with the specifications for the Timed Burning Tablets of 16 CFR Part 1630, Standard for the Surface Flammability of Carpets and Rugs (FF1-70), and 16 CFR Part 1631, Standard for the Surface Flammability of Small Carpets and Rugs (FF 2-70).