1-Bromo-2-butyne, 98%

Name: 1-Bromo-2-butyne, 98%
Brand: Vaqora Chemicals
SKU: VQ-010352

About 1-Bromo-2-butyne, 98%

1-Bromo-2-butyne (CAS 3355-28-0) is a halogenated building block offered by Vaqora Chemicals, specified at 98% purity. With the molecular formula C4H5Br, it has a molar mass of 132.99 g/mol. Its systematic (IUPAC) name is 1-bromobut-2-yne. Common synonyms include 2-Butynyl Bromide and 2-Butyne, 1-bromo-.

It is supplied as a colourless to yellow to orange liquid. Reported physical data include a boiling point of 40-41 °C and a density of 1.519 g/mL at 25 °C. Store in a cool, well-ventilated place, away from sources of ignition, with the container tightly sealed. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Typical applications include cross-coupling substrates, alkylation reactions and organic synthesis. It is used across pharmaceutical manufacturing, academic and industrial research and agrochemical production.

Available in 1 g, 5 g and 1 kg packs, 1-Bromo-2-butyne is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Cross-coupling substrates
Alkylation reactions
Organic synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	1-Bromo-2-butyne, 98%
Catalogue No.	VQ-010352
CAS Number	3355-28-0
IUPAC name	1-bromobut-2-yne
Molecular formula	C₄H₅Br
Molecular weight	132.99 g/mol
Exact mass	131.9575
Purity / assay	98%
HSN code	29033920
InChIKey	LNNXOEHOXSYWLD-UHFFFAOYSA-N
SMILES	CC#CCBr
PubChem CID	2756862

Physical properties
Physical form	Liquid
Appearance	Colourless to yellow to orange liquid
Boiling point	40-41 °C
Density	1.519 g/mL at 25 °C
LogP (XLogP3)	1.6
H-bond donors / acceptors	0 / 0
TPSA	0 Å²
Synonyms	2-Butynyl Bromide, 2-Butyne, 1-bromo-, bromo-2-butyne, 1-bromo2-butyne, but-2-ynylbromide, l-bromo-2-butine, 1-bromo-2-butine, 4-bromo-2-butyne, but-2-ynyl bromide, 2-Butyne, bromo-, 4-Bromobut-2-yne, 1-bromo-but-2-yne

Safety & hazard information (GHS)

Flammable

Harmful / irritant

Signal word: Warning

Hazard statements

H226Flammable liquid and vapor
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P210, P233, P240, P241, P242, P243, P261, P264, P264 + P265, P271, P280, P302 + P352, P303 + P361 + P353, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P370 + P378, P403 + P233, P403 + P235, P405

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 3355-28-0

Reference Standard

1-Bromo-2-butyne

CAS: 3355-28-0
Formula: C₄H₅Br
MW: 132.99 g/mol

In stock

Frequently asked questions

What is the CAS number of 1-Bromo-2-butyne, 98%?

The CAS Registry Number of 1-Bromo-2-butyne, 98% is 3355-28-0. It is also known as 2-Butynyl Bromide, 2-Butyne, 1-bromo-, bromo-2-butyne.

What is the molecular formula and molecular weight of 1-Bromo-2-butyne, 98%?

1-Bromo-2-butyne, 98% has the molecular formula C4H5Br and a molecular weight of 132.99 g/mol. Its IUPAC name is 1-bromobut-2-yne.

Which grade and pack sizes of 1-Bromo-2-butyne, 98% can I order?

We supply 1-Bromo-2-butyne, 98% in (98%) grade, in 1 g, 5 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1-Bromo-2-butyne, 98%?

Yes. Every lot of 1-Bromo-2-butyne, 98% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 1-Bromo-2-butyne, 98% be shipped internationally?

Yes. 1-Bromo-2-butyne, 98% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.