China Brominated Alkanes Manufacturers Suppliers Factory

Your Professional Brominated Alkanes Supplier

Our goal is to be your reliable partner for brominated alkanes in China. Shouguang Weidong Chemical Co., Ltd. was founded in 1956. It is a large-scale comprehensive chemical enterprise integrating scientific research, production, processing and sales. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

N-Propyl Bromide
Colorless transparent flammable and volatile liquid. With etheric odor and pungent taste. Become light yellow in air and when exposed to light. Miscible with ethanol, ether, chloroform and other

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Advantages of Brominated Alkanes

High selectivity: In free-radical halogenation, bromine is a less reactive but more selective halogenating agent than chlorine. This allows for the production of a single major product by targeting the most stable C-H bonds (tertiary over secondary, secondary over primary).

Compatibility and stability: BFRs are compatible with a wide range of polymer systems and have high thermal and UV stability. This makes them suitable for use in demanding applications like electronics, construction materials, and transportation.

Versatile building blocks: A brominated intermediate can serve as a versatile "building block" to create more complex chemical compounds. The carbon-bromine bond can be replaced in subsequent reactions to add other functional groups, making brominated alkanes useful for synthesizing pharmaceuticals, perfumes, and other specialty chemicals.

Controlled reactivity: Brominated alkanes are more reactive than chloroalkanes and more stable than iodo compounds, making them ideal for many chemical reactions, such as elimination processes. The carbon-bromine bond can be manipulated under controlled conditions to achieve specific chemical transformations.

Specification of Brominated Alkanes

Item	Best Grade	Qualified
Assay(％)	≥99.0	≥98.0
Evaporation Residue(ppm)	≤10	≤20
Moisture(ppm)	≤1000	≤1500
PH	5-7	/
Color(APHA)	≤10	/
Ethanol(%)	≤0.5	≤1.5
Acid value(as HBr)ppm	≤30	≤100

Features of Brominated Alkanes

Colorless transparent flammable and volatile liquid. With etheric odor and pungent taste. Become light yellow in air and when exposed to light. Miscible with ethanol, ether, chloroform and other organic solvents, slightly soluble in water.

Mainly used as ethylating agent in organic synthesis, the raw material for synthesizing medicine, pesticide, dye and spice and used as solvent, refrigerant and fumigant.

Application of Brominated Alkanes

Fire-retardants: Organobromine compounds are widely used as fire-retardants. The most prominent member is tetrabromobisphenol-A (4,4'-(1-methylethylidene)bis-(2,6-di-bromophenol),).

Fumigants and biocides: Ethylene bromide, obtained by addition of bromine to ethylene, was once of commercial significance as a component of leaded gasoline. It was also a popular fumigant in agriculture, displacing 1,2-dibromo-3-chloropropane ("DBCP").

Dyes

Many dyes contain carbon-bromine bonds. The naturally occurring Tyrian purple (6,6’-dibromoindigo) was a valued dye before the development of the synthetic dye industry in the late 19th century. Several brominated anthroquinone derivatives are used commercially. Bromothymol blue is a popular indicator in analytical chemistry.

Pharmaceuticals

Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin.

Designer drugs

Organobromine compounds such as 4-bromomethcathinone have appeared on the designer drug market alongside other halogenated amphetamines and cathinones in an attempt to circumvent existing drug laws.

Production Method of Brominated Alkanes

Alkenes reliably add bromine without catalysis to give the vicinal dibromides: RCH=CH2 + Br2 → RCHBrCH2Br. Aromatic compounds undergo bromination simultaneously with evolution of hydrogen bromide. Catalysts such as AlBr3 or FeBr3 are needed for the reaction to happen on aromatic rings. Chlorine-based catalysts (FeCl3, AlCl3) could be used, but yield would drop slightly as dihalogens(BrCl) could form.

Free-radical substitution with bromine is commonly used to prepare organobromine compounds. Carbonyl-containing, benzylic, allylic substrates are especially prone to this reactions. For example, the commercially significant bromoacetic acid is generated directly from acetic acid and bromine in the presence of phosphorus tribromide catalyst: CH3CO2H + Br2 → BrCH2CO2H + HBr. Bromine also converts fluoroform to bromotrifluoromethane.

Packing and Shipping of Brominated Alkanes

Packing	Bags
Shipping	Shipped by road, sea, rail.

FAQ

Q: What is the purpose of brominating alkenes?

A: Bromination of alkenes is widely applied in both the research laboratory and throughout industrial practices. The halogenated alkanes can be easily obtained using liquid bromine in inert or acidic solvents like dichlormethane (DCM) or glacial acetic acid.

Q: What is bromination of alkanes?

A: Understanding Bromination: Bromination of alkanes is a type of halogenation reaction where bromine (Br2) reacts with an alkane to form alkyl bromides.

Q: How to remove bromine from an alkane?

A: In an elimination reaction, the hydroxide ion hits one of the hydrogen atoms in the CH3 group and pulls it off. This leads to a cascade of electron pair movements resulting in the formation of a carbon-carbon double bond, and the loss of the bromine as Br-.

Q: What happens when bromine is added to an alkane?

A: An orange-brown solution of bromine dissolved in water, called bromine water, is used to distinguish between alkanes and alkenes: there is no change when bromine water is mixed with an alkane. the bromine water becomes colourless when it is mixed with an alkene.

Q: How to make alcohol from alkene?

A: Alcohols are produced industrially by hydration (adding water) of alkenes in the presence of an acid catalyst. The most common catalyst is phosphoric (V) acid. It's done at 300oC and 60 atm pressure.

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