Molekula
Bronopol (2-Bromo-2-nitro-1,3-propanediol)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Bronopol (2-Bromo-2-nitro-1,3-propanediol) is a broad-spectrum antimicrobial and preservative widely used in cosmetics, personal care products, and industrial water treatment to prevent microbial growth. It is effective against bacteria, fungi, and algae at low concentrations. This chemical has a CAS number of 52-51-7, with the molecular formula HOCH2C(Br)(NO2)CH2OH and a molecular weight of 199.99. It should be stored at ambient conditions and handled with caution, as it carries a "Danger" signal word. Molekula supplies Bronopol from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £62.00 per pack ex VAT · £74.40 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White/ off white crystalline powder |
| Melting Point | 125 - 132°C |
| Water | ≤ 0.5% |
| pH | 5.0 - 7.0 |
| Assay | ≥ 99.0% |
| Sulphated Ash | ≤ 0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 4.1 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Odour | Odorless |
| Melting Point | 120-122 °C |
| Boiling Point | 151.7 °C at 760 mmHg |
| Density | 1.9 (relative, water = 1) |
| Water Solubility | 250 g/L at 22 °C |
| Solubility (other solvents) | Soluble in alcohol, ethyl acetate. Slightly soluble in chloroform, acetone, ether, benzene. Insoluble in ligroin |
| Vapour Pressure | 1.26 × 10⁻⁵ mmHg at 20 °C |
Source: PubChem CID 2450 (HSDB, ICSC, CAMEO Chemicals)
Identification
| Property | Value |
|---|---|
| SKU | 65898637 |
| CAS Number | 52-51-7 |
| IUPAC Name | 2-bromo-2-nitropropane-1,3-diol |
| EC Number | 200-143-0 |
| Molecular Formula | HOCH2C(Br)(NO2)CH2OH |
| Molecular Weight | 199.99 |
| Exact Mass | 198.948 |
| SMILES | C(C(CO)([N+](=O)[O-])Br)O |
| InChIKey | LVDKZNITIUWNER-UHFFFAOYSA-N |
| InChI | InChI=1S/C3H6BrNO4/c4-3(1-6,2-7)5(8)9/h6-7H,1-2H2 |
| PubChem CID | 2450 |
| UN Number | UN3241 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29055990 |
| Tariff Code | 2905599890 |
Safety & GHS
-
Corrosive
GHS05
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Toxic
GHS06
-
Health Hazard
GHS07
-
Hazardous to the Environment
GHS09
Hazard statements
- H301 + H331 Toxic if swallowed or inhaled
- H312 Harmful in contact with skin
- H315 Causes skin irritation
- H318 Causes serious eye damage
- H335 May cause respiratory irritation
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Bronopol (2-Bromo-2-nitro-1,3-propanediol) commonly used for?
Bronopol is primarily used as a preservative in cosmetics, personal care products, and industrial water treatment systems to inhibit microbial growth.
What is the chemical formula and molecular weight of Bronopol?
The chemical formula is **HOCH₂C(Br)(NO₂)CH₂OH**, and the molecular weight is **199.99 g/mol**.
How should Bronopol be stored?
Bronopol should be stored at **ambient temperature** in a cool, dry place, away from incompatible substances and direct sunlight.
What grades or purity levels of Bronopol does Molekula supply?
Molekula supplies Bronopol in **technical and pharmaceutical-grade purity**, typically ≥98% purity unless otherwise specified.
Can Molekula supply Bronopol in bulk quantities?
Yes, Molekula can supply Bronopol in bulk, with quantities tailored to customer requirements—please contact us for specific packaging options.
What documentation comes with a Bronopol order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and, if applicable, a **pharmaceutical-grade certificate** or compliance documentation.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.