Product Name: Myacide S-15

EPA Reg #: 48301-35
Manufacturer: Angus Chemical Co.
Active Ingred: 10.00% 2-Bromo-2-nitropropane-1,3-diol (Bronopol)

Use sites: PULP AND PAPER MILL SYSTEMS; COOLING TOWER WATER; EVAPORATIVE CONDENSER WATER; SECONDARY OIL RECOVERY INJECTION WATER; INDUSTRIAL PROCESSING WATER; ADHESIVES; OIL STORAGE TANK BOTTOM WATER; FUELS
(CRUDE); METALWORKING CUTTING FLUIDS; OIL RECOVERYDRILLING MUD; OIL RECOVERY PACKER FLUID; PAINTS; PAINTS (EMULSION); PAINTS (LATEX); LATEX; SOLUTIONS (UNSPECIFIED); INKS; STARCH SOLUTIONS; SLURRIES Pests: SLIME-FORMING BACTERIA; DETERIORATION/SPOILAGE BACTERIA;
SULFATE-REDUCING BACTERIA; ALGAE

For toxicology:

EPA Reregistration Eligibility Decision
http://www.epa.gov/REDs/2770red.pdf

National Toxicology Program, Chemical Repository
http://ntp-server.niehs.nih.gov/htdocs/CHEM_H&S/NTP_MSDS/Hs_52-51-7.html

In summary, bronopol can cause skin irritation, partially breaks down to formaldehyde, and is a severe eye irritant in its concentrated form (EPA R.E.D.). The LD50 for bronopol is approx. 300-350 mg/kg in rats.


If exposure occurs, bronopol is rapidly absorbed & excreted from the body.

Bronopol poses low risk of developmental or reproductive effects.

Bronopol is not a carcinogen (EPA Group E).

The environmental fate is highly dependent on ambient conditions, the half-life in water can

range from 1.5 years (20 deg. C and pH6) to 3 hours at higher temperatures and pH.

A major metabolite from degradation is formaldehyde.

Bronopol is slightly toxic to avian species; slightly toxic to freshwater fish; moderately toxic to freshwater invertebrates; and moderately –highly toxic to marine invertebrates.