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Bronopol

CAS Number
52-51-7
EC Number
200-143-0
Chemical Formula
C3H6BrNO4
Molecular Weight
199.99 g/mol

Description

Bronopol (CAS 52-51-7 ), also known commercially as beta-Bromo-beta-nitrotrimethyleneglycol and 2-Nitro-2-bromo-1,3-propanediol, is a broad-spectrum antimicrobial active used primarily as a preservative and biocide. It controls bacterial growth effectively at low concentrations, making it a cost-efficient option for formulators managing microbial contamination in aqueous systems across industrial and personal care applications. In personal care and cosmetics, this chemical functions as a preservative in rinse-off and leave-on formulations including shampoos, lotions, and liquid soaps. Industrial water treatment systems rely on it to suppress bacterial populations. It is frequently utilized in cooling towers and process water circuits to maintain system efficiency. Oilfield and metalworking operations use it to prevent microbial-induced corrosion and spoilage in drilling fluids and cutting fluid emulsions. Pulp, paper, and textile processing also employ it to control slime-forming bacteria that degrade product quality and clog equipment. This versatility makes it a staple in heavy industrial manufacturing environments. The product is supplied as a white to off-white crystalline powder. It is available in technical grade for industrial applications and in higher-purity grades meeting pharmaceutical and cosmetic manufacturing standards. Packaging typically ranges from kilogram-scale bags to bulk quantities suited for large industrial procurement. Our supply chain ensures consistent quality and availability for global distribution and specialized chemical requirements. Contact us for supply of Bronopol Request Quote

Other Names (Synonyms)

Bronopolu | beta-Bromo-beta-nitrotrimethyleneglycol | 2-Nitro-2-bromo-1,3-propanediol | 2-Bromo-2-nitropropane-1,3-diol | 2-Bromo-2-nitro-1,3-propanediol | Bronosol | Bronocot | Bronotak

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point131.5 °C
Boiling Point358.0±42.0 °C(Predicted)
Density1.1 g/cm³
Flash Point167°C
Appearanceoff-white crystalline powder
ColorWhite to yellow
Odorodorless
FormCrystals or Crystalline Powder
Water Solubility25 g/100 mL (22 ºC)
Refractive Index1.6200 (estimate)
Log P1.150 (est)

Safety & Handling

Danger
GHS05· CorrosiveGHS07· IrritantGHS09· EnvironmentGHS06· ToxicGHS02· FlammableGHS08· Health Hazard

Hazard Statements

H228Flammable solid
H301Toxic if swallowed
H302Harmful if swallowed
H310Fatal in contact with skin
H312Harmful in contact with skin
H315Causes skin irritation
H318Causes serious eye damage
H330Fatal if inhaled
H331Toxic if inhaled
H335May cause respiratory irritation
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H411Toxic to aquatic life with long lasting effects H302+
H312Harmful if swallowed or in contact with skin

Precautionary Statements

P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P240Ground and bond container and receiving equipment.
P241Use explosion-proof equipment.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P262Do not get in eyes, on skin, or on clothing.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P284In case of inadequate ventilation wear respiratory protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P319Get medical advice/attention if you feel unwell.
P320Specific treatment is urgent (see … on this label).
P321Specific treatment (see … on this label).
P330Rinse mouth.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P364Take off immediately all contaminated clothing and wash it before reuse.
P364Take off contaminated clothing and wash it before reuse.
P378Use … for extinction.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29055999
UN Number3241
ADR Class4.1
Packing GroupIII
Storage Class4.1B - Flammable solid hazardous materials
WGK (Germany)2