Molekula
1-Bromobutane
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
1-Bromobutane is a colorless, volatile liquid alkyl halide used primarily as an alkylating agent in organic synthesis, pharmaceuticals, and agrochemical production. It serves as a key intermediate for creating longer-chain compounds, surfactants, and various specialty chemicals. This chemical has a CAS number of 109-65-9, with the molecular formula CH3(CH2)3Br and a molecular weight of 137.02. It is stored at ambient conditions and carries a **Danger** signal word due to its hazardous properties. Molekula supplies 1-Bromobutane 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
On backorder — expected to ship by 25 November 2026
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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500 g — £27.50 per pack ex VAT · £33.00 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 | Clear colorless to light yellow liquid |
| Refractive Index | 1.4380 to 1.4410 (20°C, 589 nm) |
| Assay (GC) | ≥98.5% |
| Identification (FT-IR) | Conforms to structure |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 10 °C |
| Transport Class | 3 |
| Packing Group | II |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless to pale straw-colored liquid |
| Melting Point | -112 °C |
| Boiling Point | 101.3 °C at 760 mmHg |
| Water Solubility | 869 mg/L at 25 °C |
| Solubility (other solvents) | Slightly soluble in carbon tetrachloride; soluble in chloroform; miscible with ethanol, ether, acetone |
| Vapour Pressure | 41.97 mmHg at 25 °C |
| Refractive Index | 1.4398 |
| log P (octanol/water) | 2.75 |
Source: PubChem CID 8002 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90026743 |
| CAS Number | 109-65-9 |
| IUPAC Name | 1-bromobutane |
| EC Number | 203-691-9 |
| Molecular Formula | CH3(CH2)3Br |
| Molecular Weight | 137.02 |
| Exact Mass | 135.9888 |
| SMILES | CCCCBr |
| InChIKey | MPPPKRYCTPRNTB-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H9Br/c1-2-3-4-5/h2-4H2,1H3 |
| PubChem CID | 8002 |
| UN Number | UN1126 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29036990 |
| Tariff Code | 2903691990 |
Safety & GHS
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Flammable
GHS02
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H225 Highly flammable liquid and vapour
- H315 Causes skin irritation
- H335 May cause respiratory irritation
- H351 Suspected of causing cancer
- H360FD May damage fertility. May damage the unborn child.
- H373 May cause damage to organs through prolonged or repeated exposure
- H411 Toxic to aquatic life with long lasting effects
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1-Butyl bromide
- 4-bromobutane
- Bromobutane
- Butane, 1-bromo-
- Butane, bromo-
- Butyl bromide
- l-bromobutane
- N-BUTYL BROMIDE
- n-butyl bromine
- n-butylbromid
Frequently asked questions
What is 1-Bromobutane commonly used for?
1-Bromobutane is primarily used as an alkylating agent in organic synthesis, pharmaceuticals, and agrochemicals, as well as a solvent and intermediate for producing other chemicals.
What is the chemical formula and molecular weight of 1-Bromobutane?
The chemical formula is **CH₃(CH₂)₃Br** and the molecular weight is **137.02 g/mol**.
How should 1-Bromobutane be stored?
Store in a tightly sealed container at **ambient temperature**, away from heat, sparks, and open flames.
What grades of 1-Bromobutane does Molekula supply?
Molekula supplies **reagent-grade 1-Bromobutane** with high purity for laboratory and industrial applications.
Can Molekula supply 1-Bromobutane in bulk quantities?
Yes, Molekula can provide **bulk quantities** of 1-Bromobutane upon request, depending on availability and customer needs.
What documentation comes with an order of 1-Bromobutane?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
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.