Bromine Water 1 liter

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Bromine water is a solution of bromine (Br₂) in water. It is a reactive and strong oxidizing agent used primarily in chemical analysis and organic chemistry. Here are some key points about bromine water:


  1. Appearance: It has a reddish-brown color due to the presence of bromine.
  2. Odor: It has a strong, unpleasant smell similar to chlorine.
  3. Solubility: Bromine is only slightly soluble in water but dissolves better in organic solvents.


Bromine Water

In the laboratory, bromine water is employed in several analytical and synthetic applications due to its strong oxidizing properties and ability to react with various organic compounds. Here are the main laboratory uses of bromine water:

1. Testing for Unsaturation in Organic Compounds

Bromine water is widely used to test for the presence of unsaturated compounds (alkenes and alkynes). When added to an unsaturated compound, the bromine adds across the double or triple bonds, leading to the decolorization of the bromine water.

  • Example Reaction: C2H4(ethene)+Br2→C2H4Br2(1,2-dibromoethane)\text{C}_2\text{H}_4 (\text{ethene}) + \text{Br}_2 \rightarrow \text{C}_2\text{H}_4\text{Br}_2 (\text{1,2-dibromoethane})C2​H4​(ethene)+Br2​→C2​H4​Br2​(1,2-dibromoethane)

2. Detection of Phenols

Phenols react with bromine water to form a white precipitate of 2,4,6-tribromophenol, indicating the presence of a phenolic group.

  • Example Reaction: C6H5OH(phenol)+3Br2→C6H2Br3OH(2,4,6-tribromophenol)+3HBr\text{C}_6\text{H}_5\text{OH} (\text{phenol}) + 3\text{Br}_2 \rightarrow \text{C}_6\text{H}_2\text{Br}_3\text{OH} (\text{2,4,6-tribromophenol}) + 3\text{HBr}C6​H5​OH(phenol)+3Br2​→C6​H2​Br3​OH(2,4,6-tribromophenol)+3HBr

3. Oxidation Reactions

Bromine water can oxidize certain functional groups in organic compounds, such as converting aldehydes to carboxylic acids.

  • Example Reaction: RCHO(aldehyde)+Br2+H2O→RCOOH(carboxylic acid)+2HBr\text{RCHO} (\text{aldehyde}) + \text{Br}_2 + \text{H}_2\text{O} \rightarrow \text{RCOOH} (\text{carboxylic acid}) + 2\text{HBr}RCHO(aldehyde)+Br2​+H2​O→RCOOH(carboxylic acid)+2HBr

4. Identification of Aliphatic Amines

Primary and secondary aliphatic amines can be distinguished from tertiary amines using bromine water. Primary and secondary amines react with bromine to form N-bromoamines, while tertiary amines do not react.

5. Detection of Aniline and Its Derivatives

Aniline and its derivatives react with bromine water to form a precipitate of 2,4,6-tribromoaniline, which is a useful test for identifying these compounds.

  • Example Reaction: C6H5NH2(aniline)+3Br2→C6H2Br3NH2(2,4,6-tribromoaniline)+3HBr\text{C}_6\text{H}_5\text{NH}_2 (\text{aniline}) + 3\text{Br}_2 \rightarrow \text{C}_6\text{H}_2\text{Br}_3\text{NH}_2 (\text{2,4,6-tribromoaniline}) + 3\text{HBr}C6​H5​NH2​(aniline)+3Br2​→C6​H2​Br3​NH2​(2,4,6-tribromoaniline)+3HBr

6. Bleaching and Disinfection

Due to its strong oxidizing properties, bromine water can be used for bleaching certain substances and as a disinfectant in laboratory settings.

7. Analytical Chemistry

Bromine water is used in various qualitative and quantitative analyses to identify and measure specific organic and inorganic substances.


SKU: ACS97246CHEM0 Category:

Handling bromine water requires strict safety precautions due to its toxic, corrosive, and reactive nature. Here are the detailed safety measures to consider:

Personal Protective Equipment (PPE)

  1. Gloves: Wear appropriate chemical-resistant gloves (e.g., nitrile or neoprene) to protect your skin from direct contact.
  2. Goggles: Use safety goggles or a face shield to protect your eyes from splashes.
  3. Lab Coat: Wear a lab coat or apron to protect your clothing and skin.
  4. Respiratory Protection: Use a fume hood to avoid inhaling bromine vapors. If working outside a fume hood, a respirator with appropriate cartridges for bromine vapors should be used.

Working Environment

  1. Fume Hood: Always handle bromine water in a well-ventilated fume hood to prevent inhalation of toxic vapors.
  2. Ventilation: Ensure the laboratory is well-ventilated to disperse any accidental release of bromine vapors.
  3. Spill Kits: Have a chemical spill kit readily available that is suitable for neutralizing bromine spills.

Handling and Storage

  1. Storage: Store bromine water in a cool, dark place in a tightly sealed, corrosion-resistant container. Clearly label the container with appropriate hazard warnings.
  2. Avoid Contact: Avoid direct contact with bromine water. Do not breathe in vapors or allow the solution to come into contact with skin, eyes, or clothing.
  3. Transfer: When transferring bromine water, use chemical-resistant containers and equipment to prevent leaks and spills.

Emergency Procedures

  1. Skin Contact: Immediately wash the affected area with plenty of water for at least 15 minutes. Remove contaminated clothing and seek medical attention.
  2. Eye Contact: Rinse eyes thoroughly with water for at least 15 minutes, lifting eyelids occasionally, and seek immediate medical attention.
  3. Inhalation: Move the affected person to fresh air immediately. If breathing is difficult, provide oxygen and seek medical attention.
  4. Spill Response: Evacuate the area and allow trained personnel to handle the spill. Use sodium thiosulfate or another suitable reducing agent to neutralize the spill, then clean up with absorbent material. Dispose of waste according to local regulations.


  1. Neutralization: Neutralize bromine water with a reducing agent such as sodium thiosulfate (Na₂S₂O₃) before disposal. The neutralized solution should be handled as hazardous waste.
  2. Waste Disposal: Follow local regulations for the disposal of hazardous chemical waste. Ensure that waste containers are properly labeled and stored until disposal.

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