Bronopol
Brief Introduction:
2-Bromo-2-nitro-1,3-propanediol, commonly known as Bronopol, Pilebol, and Ronopol, is an organic compound with a molecular formula of C3H6BrNO4. At room temperature, it is white to light yellow, yellow-brown crystalline powder, odorless and tasteless, easily soluble in water, ethanol, propylene glycol, insoluble in chloroform, acetone, benzene, etc. It will slowly decompose in alkaline aqueous solution, and has a corrosive effect on some metals, such as aluminum. It is mainly used as a preservative and bactericide for cosmetics, which can effectively prevent and control a variety of plant pathogenic bacteria.
Specifications of our Bronopol:
| Test Items | Specifications |
| Appearance | White or almost white crystalline powder |
| Melting Point | 126℃ ~ 132℃ |
| pH Value(1% aqueous solution, 20℃) | 5 ~ 7 |
| Sulphated Ash | Not more than 0.1% |
| Solubility Test(20% Water Solution) | Clear or nearly clear solution, free of foreign particles |
| Appearance of Solution(20%W/V in CH3OH) | Clear or nearly clear solution, free of foreign particles |
| Water Content(Karl Fischer Method) | Not more than 0.5% |
| Particle Size | 95% pass through 10 mesh |
| 2-methyl-2-nitropropane-1,3-propanediol | Less than 0.3% |
| Tris(hydroxymethyl)nitromethane | Less than 0.3% |
| 2-nitroethanol | Less than 0.3% |
| Sodium bromide | Less than 0.3% |
| Purity | Not less than 99.0% |
The Main Purposes:
Bronopol is mainly used as a preservative and bactericide. It is added to the processing of shampoos, balms and creams and other cosmetics, the concentration in cosmetics is 0.01%-0.02%. It can also be used in detergents and fabric treatment agents. It can effectively control a variety of plant pathogenic bacteria, cotton seeds can be treated to prevent and control cotton black arm disease and bacterial scabrous blight caused by Xanthomonas cotton, and have no phytotoxicity to cotton. It can also be used for rice bakanae disease, the recommended concentration is 800-1000mg/L. It is also used in industrial circulating water, paper pulp, coatings, plastics, cosmetics, wood, cooling water circulation systems, and sterilization, anti-mildew, anti-corrosion, and algae killing for industrial purposes.
Bronopol Typical Application Reference:
1. Cosmetic Preservative: compounded with 25% methylisothiazolinone + 75% bronopol.
2. Industrial Preservatives: guanidine polyphosphate 50% + bronopol 50% compound.
3. Indoor Artificial Infection Prevention Test: bronopol 80% + isothiazolinone 20% compound.
4. Classic Formula: bronopol + CMIT/MIT
5. Oil Back Injection Water:
Bronopol+Glutaraldehyde
Bronopol+DBNE and other formulas
(*Quoted from: Antibacterial and Antifungal Technology Manual)
Packaging:
25kg per fibre drum or according to the requirements from customers.
Storage Conditions:
Preserved in unopened original containers in a cool dry place before using; kept away from direct sunlight, heat and moisture.
Shelf Life:
24 Months if stored under above conditions.
