trans-1,4-Dibromo-2-butene

CAS 821-06-7BrCH2CH=CHCH2BrChemical Synthesis

Tech Serve Solutions offers trans-1,4-Dibromo-2-butene (CAS: 821-06-7), a halogenated hydrocarbon with the linear formula BrCH₂CH=CHCH₂Br. This organic building block, with a molecular weight of 213.90 g/mol, is a key intermediate in various chemical syntheses. Its reactivity makes it valuable in constructing more complex organic molecules, particularly where precise placement of functional groups is required.

Synonyms: BrCH2CH=CHCH2Br

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trans-1,4-Dibromo-2-butene (BrCH2CH=CHCH2Br) — chemical structure, CAS 821-06-7; Chemistry, fine chemical supplied by Tech Serve Solutions

AlkenylBuilding BlocksChemical SynthesisHalogenated HydrocarbonsOrganic Building Blocks

01 /Applications

Organic Synthesis Intermediate

Trans-1,4-Dibromo-2-butene serves as a versatile building block in organic synthesis. It is frequently employed in reactions requiring alkylation or the introduction of a four-carbon chain with terminal electrophilic sites.

Polymer Chemistry

This compound can be utilised in the development of speciality polymers. Its dibromoalkene structure allows for incorporation into polymer chains, potentially modifying material properties.

Pharmaceutical and Agrochemical Research

As a functionalized hydrocarbon, it finds use in the early stages of research for novel pharmaceutical and agrochemical compounds. It enables the construction of specific molecular scaffolds.

02 /Properties

Molecular weight	213.90
Linear formula	BrCH2CH=CHCH2Br
Assay	99%
Boiling point	205 °C(lit.)
Storage temperature	2-8°C
Melting point	48-51 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Corrosive (GHS05) — Corrosive

GHS hazard pictogram: Toxic (GHS06) — Toxic

Danger

Hazard statements

H301Toxic if swallowed
H314Causes severe skin burns and eye damage

Precautionary statements

P280Wear protective gloves, clothing and eye/face protection
P301IF SWALLOWED
P305IF IN EYES
P310Immediately call a POISON CENTER or doctor

Protective equipment	Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
Flash point	113 °C / 235.4 °F
Transport (UN / ADR)	UN 2923 8/PG 2
Water hazard class (WGK, DE)	2
Hazard codes (EU)	T
Risk statements (R)	25-34
Safety statements (S)	26-36/37/39-45

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

821-06-7

MDL number

MFCD00000249

PubChem substance

24893800

Beilstein registry

1719696

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is trans-1,4-Dibromo-2-butene used for?

Trans-1,4-Dibromo-2-butene is primarily used as an intermediate in organic synthesis, a building block in polymer chemistry, and in research for new pharmaceutical and agrochemical compounds.

What are the CAS number and formula for trans-1,4-Dibromo-2-butene?

The CAS number is 821-06-7 and the linear formula is BrCH₂CH=CHCH₂Br.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies trans-1,4-Dibromo-2-butene with a minimum assay of 99%. We do not represent this product as USP, BP, or EP grade.

How should trans-1,4-Dibromo-2-butene be handled safely?

Trans-1,4-Dibromo-2-butene is classified as Danger, causing severe skin burns and eye damage (H314) and is toxic if swallowed (H301). Handle with appropriate personal protective equipment, including eyeshields, face shields, gloves, and respiratory protection (e.g., N100 respirator). Ensure adequate ventilation.

How is trans-1,4-Dibromo-2-butene packed and shipped?

Products are typically packed in UN-approved containers suitable for hazardous materials. Shipping is conducted in compliance with international regulations for hazardous goods (UN 2923 8/PG 2).